1 00:00:14,920 --> 00:00:42,830 so 2 00:00:42,830 --> 00:00:42,840 3 00:00:42,840 --> 00:01:10,390 so 4 00:01:10,390 --> 00:01:10,400 5 00:01:10,400 --> 00:01:12,870 the nasa lewis research center is in a 6 00:01:12,870 --> 00:01:12,880 the nasa lewis research center is in a 7 00:01:12,880 --> 00:01:14,149 the nasa lewis research center is in a unique position 8 00:01:14,149 --> 00:01:14,159 unique position 9 00:01:14,159 --> 00:01:16,710 unique position to take advantage of computational fluid 10 00:01:16,710 --> 00:01:16,720 to take advantage of computational fluid 11 00:01:16,720 --> 00:01:17,749 to take advantage of computational fluid dynamics 12 00:01:17,749 --> 00:01:17,759 dynamics 13 00:01:17,759 --> 00:01:20,070 dynamics structural mechanics and material 14 00:01:20,070 --> 00:01:20,080 structural mechanics and material 15 00:01:20,080 --> 00:01:21,030 structural mechanics and material science 16 00:01:21,030 --> 00:01:21,040 science 17 00:01:21,040 --> 00:01:22,950 science to develop new techniques for 18 00:01:22,950 --> 00:01:22,960 to develop new techniques for 19 00:01:22,960 --> 00:01:24,230 to develop new techniques for multi-component 20 00:01:24,230 --> 00:01:24,240 multi-component 21 00:01:24,240 --> 00:01:27,670 multi-component multi-discipline analysis design 22 00:01:27,670 --> 00:01:27,680 multi-discipline analysis design 23 00:01:27,680 --> 00:01:30,630 multi-discipline analysis design and optimization of advanced engine 24 00:01:30,630 --> 00:01:30,640 and optimization of advanced engine 25 00:01:30,640 --> 00:01:32,310 and optimization of advanced engine systems 26 00:01:32,310 --> 00:01:32,320 systems 27 00:01:32,320 --> 00:01:34,069 systems to that end many of the lewis 28 00:01:34,069 --> 00:01:34,079 to that end many of the lewis 29 00:01:34,079 --> 00:01:36,950 to that end many of the lewis organizations have formed research teams 30 00:01:36,950 --> 00:01:36,960 organizations have formed research teams 31 00:01:36,960 --> 00:01:39,030 organizations have formed research teams whose activities are directed towards a 32 00:01:39,030 --> 00:01:39,040 whose activities are directed towards a 33 00:01:39,040 --> 00:01:41,109 whose activities are directed towards a common long-range vision 34 00:01:41,109 --> 00:01:41,119 common long-range vision 35 00:01:41,119 --> 00:01:44,469 common long-range vision of a numerical test cell for studies on 36 00:01:44,469 --> 00:01:44,479 of a numerical test cell for studies on 37 00:01:44,479 --> 00:01:45,109 of a numerical test cell for studies on advanced 38 00:01:45,109 --> 00:01:45,119 advanced 39 00:01:45,119 --> 00:01:48,710 advanced engine systems this unique computational 40 00:01:48,710 --> 00:01:48,720 engine systems this unique computational 41 00:01:48,720 --> 00:01:49,590 engine systems this unique computational capability 42 00:01:49,590 --> 00:01:49,600 capability 43 00:01:49,600 --> 00:01:52,830 capability in turn sets the stage for new levels of 44 00:01:52,830 --> 00:01:52,840 in turn sets the stage for new levels of 45 00:01:52,840 --> 00:01:55,109 in turn sets the stage for new levels of understanding once the scientist or 46 00:01:55,109 --> 00:01:55,119 understanding once the scientist or 47 00:01:55,119 --> 00:01:56,950 understanding once the scientist or engineer is satisfied 48 00:01:56,950 --> 00:01:56,960 engineer is satisfied 49 00:01:56,960 --> 00:01:58,709 engineer is satisfied that the critical physics are being 50 00:01:58,709 --> 00:01:58,719 that the critical physics are being 51 00:01:58,719 --> 00:02:01,190 that the critical physics are being modeled in the analysis 52 00:02:01,190 --> 00:02:01,200 modeled in the analysis 53 00:02:01,200 --> 00:02:03,830 modeled in the analysis however confidence in computational 54 00:02:03,830 --> 00:02:03,840 however confidence in computational 55 00:02:03,840 --> 00:02:04,709 however confidence in computational science 56 00:02:04,709 --> 00:02:04,719 science 57 00:02:04,719 --> 00:02:07,429 science can only be achieved by detailed 58 00:02:07,429 --> 00:02:07,439 can only be achieved by detailed 59 00:02:07,439 --> 00:02:08,550 can only be achieved by detailed comparison 60 00:02:08,550 --> 00:02:08,560 comparison 61 00:02:08,560 --> 00:02:11,670 comparison with experimental data obtained in test 62 00:02:11,670 --> 00:02:11,680 with experimental data obtained in test 63 00:02:11,680 --> 00:02:12,470 with experimental data obtained in test cells 64 00:02:12,470 --> 00:02:12,480 cells 65 00:02:12,480 --> 00:02:16,550 cells or wind tunnels one such validation 66 00:02:16,550 --> 00:02:16,560 or wind tunnels one such validation 67 00:02:16,560 --> 00:02:19,190 or wind tunnels one such validation experiment was performed in the 10 by 10 68 00:02:19,190 --> 00:02:19,200 experiment was performed in the 10 by 10 69 00:02:19,200 --> 00:02:19,589 experiment was performed in the 10 by 10 foot 70 00:02:19,589 --> 00:02:19,599 foot 71 00:02:19,599 --> 00:02:22,630 foot supersonic wind tunnel at the nasa lewis 72 00:02:22,630 --> 00:02:22,640 supersonic wind tunnel at the nasa lewis 73 00:02:22,640 --> 00:02:23,589 supersonic wind tunnel at the nasa lewis research center 74 00:02:23,589 --> 00:02:23,599 research center 75 00:02:23,599 --> 00:02:27,350 research center in cleveland ohio in this experiment 76 00:02:27,350 --> 00:02:27,360 in cleveland ohio in this experiment 77 00:02:27,360 --> 00:02:29,430 in cleveland ohio in this experiment instrumentation was installed in a 78 00:02:29,430 --> 00:02:29,440 instrumentation was installed in a 79 00:02:29,440 --> 00:02:31,030 instrumentation was installed in a supersonic inlet 80 00:02:31,030 --> 00:02:31,040 supersonic inlet 81 00:02:31,040 --> 00:02:34,710 supersonic inlet designed for mach 5 to provide detailed 82 00:02:34,710 --> 00:02:34,720 designed for mach 5 to provide detailed 83 00:02:34,720 --> 00:02:35,190 designed for mach 5 to provide detailed data 84 00:02:35,190 --> 00:02:35,200 data 85 00:02:35,200 --> 00:02:38,710 data for code validation a 3d 86 00:02:38,710 --> 00:02:38,720 for code validation a 3d 87 00:02:38,720 --> 00:02:40,949 for code validation a 3d viscous computer simulation of this 88 00:02:40,949 --> 00:02:40,959 viscous computer simulation of this 89 00:02:40,959 --> 00:02:41,830 viscous computer simulation of this inlet 90 00:02:41,830 --> 00:02:41,840 inlet 91 00:02:41,840 --> 00:02:44,630 inlet revealed previously unknown strong 92 00:02:44,630 --> 00:02:44,640 revealed previously unknown strong 93 00:02:44,640 --> 00:02:46,229 revealed previously unknown strong secondary flows 94 00:02:46,229 --> 00:02:46,239 secondary flows 95 00:02:46,239 --> 00:02:48,830 secondary flows as can be seen from these particle 96 00:02:48,830 --> 00:02:48,840 as can be seen from these particle 97 00:02:48,840 --> 00:02:50,070 as can be seen from these particle traces 98 00:02:50,070 --> 00:02:50,080 traces 99 00:02:50,080 --> 00:02:52,949 traces these secondary flows are formed because 100 00:02:52,949 --> 00:02:52,959 these secondary flows are formed because 101 00:02:52,959 --> 00:02:53,990 these secondary flows are formed because of shock wave 102 00:02:53,990 --> 00:02:54,000 of shock wave 103 00:02:54,000 --> 00:02:56,390 of shock wave interactions with the turbulent side 104 00:02:56,390 --> 00:02:56,400 interactions with the turbulent side 105 00:02:56,400 --> 00:02:58,149 interactions with the turbulent side wall boundary layers 106 00:02:58,149 --> 00:02:58,159 wall boundary layers 107 00:02:58,159 --> 00:03:01,670 wall boundary layers and they create additional inlet losses 108 00:03:01,670 --> 00:03:01,680 and they create additional inlet losses 109 00:03:01,680 --> 00:03:04,149 and they create additional inlet losses the close coupling between analysis and 110 00:03:04,149 --> 00:03:04,159 the close coupling between analysis and 111 00:03:04,159 --> 00:03:05,910 the close coupling between analysis and the validation experiment 112 00:03:05,910 --> 00:03:05,920 the validation experiment 113 00:03:05,920 --> 00:03:08,470 the validation experiment was designed to confirm both the cause 114 00:03:08,470 --> 00:03:08,480 was designed to confirm both the cause 115 00:03:08,480 --> 00:03:09,509 was designed to confirm both the cause and effect 116 00:03:09,509 --> 00:03:09,519 and effect 117 00:03:09,519 --> 00:03:12,309 and effect of these previously unknown secondary 118 00:03:12,309 --> 00:03:12,319 of these previously unknown secondary 119 00:03:12,319 --> 00:03:14,550 of these previously unknown secondary flows 120 00:03:14,550 --> 00:03:14,560 flows 121 00:03:14,560 --> 00:03:17,190 flows a second important application of 122 00:03:17,190 --> 00:03:17,200 a second important application of 123 00:03:17,200 --> 00:03:19,670 a second important application of computational fluid dynamics 124 00:03:19,670 --> 00:03:19,680 computational fluid dynamics 125 00:03:19,680 --> 00:03:23,350 computational fluid dynamics is to analyze new concepts in propulsion 126 00:03:23,350 --> 00:03:23,360 is to analyze new concepts in propulsion 127 00:03:23,360 --> 00:03:25,830 is to analyze new concepts in propulsion such as this supersonic fan blade 128 00:03:25,830 --> 00:03:25,840 such as this supersonic fan blade 129 00:03:25,840 --> 00:03:27,670 such as this supersonic fan blade designed using a 2d 130 00:03:27,670 --> 00:03:27,680 designed using a 2d 131 00:03:27,680 --> 00:03:31,190 designed using a 2d analysis a 3d viscous computer 132 00:03:31,190 --> 00:03:31,200 analysis a 3d viscous computer 133 00:03:31,200 --> 00:03:32,149 analysis a 3d viscous computer simulation 134 00:03:32,149 --> 00:03:32,159 simulation 135 00:03:32,159 --> 00:03:35,030 simulation predicted blade pressures shown here in 136 00:03:35,030 --> 00:03:35,040 predicted blade pressures shown here in 137 00:03:35,040 --> 00:03:36,949 predicted blade pressures shown here in varying colors 138 00:03:36,949 --> 00:03:36,959 varying colors 139 00:03:36,959 --> 00:03:39,270 varying colors the simulation also allowed designers 140 00:03:39,270 --> 00:03:39,280 the simulation also allowed designers 141 00:03:39,280 --> 00:03:41,910 the simulation also allowed designers and engineers to visualize secondary 142 00:03:41,910 --> 00:03:41,920 and engineers to visualize secondary 143 00:03:41,920 --> 00:03:43,190 and engineers to visualize secondary flow 144 00:03:43,190 --> 00:03:43,200 flow 145 00:03:43,200 --> 00:03:45,350 flow here particle traces show the passage 146 00:03:45,350 --> 00:03:45,360 here particle traces show the passage 147 00:03:45,360 --> 00:03:46,229 here particle traces show the passage vortex 148 00:03:46,229 --> 00:03:46,239 vortex 149 00:03:46,239 --> 00:03:48,710 vortex which can be traced to its origin as a 150 00:03:48,710 --> 00:03:48,720 which can be traced to its origin as a 151 00:03:48,720 --> 00:03:50,070 which can be traced to its origin as a horseshoe vortex 152 00:03:50,070 --> 00:03:50,080 horseshoe vortex 153 00:03:50,080 --> 00:03:53,910 horseshoe vortex ahead of the blade a third application 154 00:03:53,910 --> 00:03:53,920 ahead of the blade a third application 155 00:03:53,920 --> 00:03:56,390 ahead of the blade a third application of computational fluid dynamics at nasa 156 00:03:56,390 --> 00:03:56,400 of computational fluid dynamics at nasa 157 00:03:56,400 --> 00:03:58,149 of computational fluid dynamics at nasa lewis research center 158 00:03:58,149 --> 00:03:58,159 lewis research center 159 00:03:58,159 --> 00:04:00,309 lewis research center lies in the study of interactions which 160 00:04:00,309 --> 00:04:00,319 lies in the study of interactions which 161 00:04:00,319 --> 00:04:01,990 lies in the study of interactions which are difficult to measure 162 00:04:01,990 --> 00:04:02,000 are difficult to measure 163 00:04:02,000 --> 00:04:05,350 are difficult to measure such as this supersonic combustor 164 00:04:05,350 --> 00:04:05,360 such as this supersonic combustor 165 00:04:05,360 --> 00:04:07,990 such as this supersonic combustor the combustion process shown was modeled 166 00:04:07,990 --> 00:04:08,000 the combustion process shown was modeled 167 00:04:08,000 --> 00:04:10,229 the combustion process shown was modeled as two hydrogen jets 168 00:04:10,229 --> 00:04:10,239 as two hydrogen jets 169 00:04:10,239 --> 00:04:12,869 as two hydrogen jets operating at a pressure ratio of eight 170 00:04:12,869 --> 00:04:12,879 operating at a pressure ratio of eight 171 00:04:12,879 --> 00:04:16,310 operating at a pressure ratio of eight and injecting into a rectangular duct 172 00:04:16,310 --> 00:04:16,320 and injecting into a rectangular duct 173 00:04:16,320 --> 00:04:18,949 and injecting into a rectangular duct compression waves are generated upstream 174 00:04:18,949 --> 00:04:18,959 compression waves are generated upstream 175 00:04:18,959 --> 00:04:19,509 compression waves are generated upstream of each 176 00:04:19,509 --> 00:04:19,519 of each 177 00:04:19,519 --> 00:04:21,670 of each jet as can be seen from these color 178 00:04:21,670 --> 00:04:21,680 jet as can be seen from these color 179 00:04:21,680 --> 00:04:23,350 jet as can be seen from these color contours 180 00:04:23,350 --> 00:04:23,360 contours 181 00:04:23,360 --> 00:04:25,990 contours on the top wall the two jets create an 182 00:04:25,990 --> 00:04:26,000 on the top wall the two jets create an 183 00:04:26,000 --> 00:04:28,550 on the top wall the two jets create an adverse pressure gradient which causes 184 00:04:28,550 --> 00:04:28,560 adverse pressure gradient which causes 185 00:04:28,560 --> 00:04:30,390 adverse pressure gradient which causes the free stream particles to move 186 00:04:30,390 --> 00:04:30,400 the free stream particles to move 187 00:04:30,400 --> 00:04:31,909 the free stream particles to move outward laterally 188 00:04:31,909 --> 00:04:31,919 outward laterally 189 00:04:31,919 --> 00:04:35,510 outward laterally as well as downward the jets are bent 190 00:04:35,510 --> 00:04:35,520 as well as downward the jets are bent 191 00:04:35,520 --> 00:04:38,790 as well as downward the jets are bent by the free stream the second jet 192 00:04:38,790 --> 00:04:38,800 by the free stream the second jet 193 00:04:38,800 --> 00:04:40,310 by the free stream the second jet penetrates more deeply 194 00:04:40,310 --> 00:04:40,320 penetrates more deeply 195 00:04:40,320 --> 00:04:42,390 penetrates more deeply into the free stream flow than the first 196 00:04:42,390 --> 00:04:42,400 into the free stream flow than the first 197 00:04:42,400 --> 00:04:43,990 into the free stream flow than the first jet 198 00:04:43,990 --> 00:04:44,000 jet 199 00:04:44,000 --> 00:04:46,550 jet deeper jet penetration means enhanced 200 00:04:46,550 --> 00:04:46,560 deeper jet penetration means enhanced 201 00:04:46,560 --> 00:04:47,909 deeper jet penetration means enhanced mixing of hydrogen 202 00:04:47,909 --> 00:04:47,919 mixing of hydrogen 203 00:04:47,919 --> 00:04:51,749 mixing of hydrogen and air and consequently more complete 204 00:04:51,749 --> 00:04:51,759 and air and consequently more complete 205 00:04:51,759 --> 00:04:56,150 and air and consequently more complete combustion computational fluid dynamics 206 00:04:56,150 --> 00:04:56,160 combustion computational fluid dynamics 207 00:04:56,160 --> 00:04:57,990 combustion computational fluid dynamics is also being used 208 00:04:57,990 --> 00:04:58,000 is also being used 209 00:04:58,000 --> 00:05:00,469 is also being used to study the interaction of the external 210 00:05:00,469 --> 00:05:00,479 to study the interaction of the external 211 00:05:00,479 --> 00:05:01,430 to study the interaction of the external environment 212 00:05:01,430 --> 00:05:01,440 environment 213 00:05:01,440 --> 00:05:04,870 environment with a propulsion system in this example 214 00:05:04,870 --> 00:05:04,880 with a propulsion system in this example 215 00:05:04,880 --> 00:05:08,469 with a propulsion system in this example an under expanded 3d asymmetric nozzle 216 00:05:08,469 --> 00:05:08,479 an under expanded 3d asymmetric nozzle 217 00:05:08,479 --> 00:05:11,830 an under expanded 3d asymmetric nozzle at a pressure ratio of 10 exhaust 218 00:05:11,830 --> 00:05:11,840 at a pressure ratio of 10 exhaust 219 00:05:11,840 --> 00:05:15,430 at a pressure ratio of 10 exhaust supersonically into quiescent air 220 00:05:15,430 --> 00:05:15,440 supersonically into quiescent air 221 00:05:15,440 --> 00:05:18,710 supersonically into quiescent air nozzle flow expands laterally downstream 222 00:05:18,710 --> 00:05:18,720 nozzle flow expands laterally downstream 223 00:05:18,720 --> 00:05:21,909 nozzle flow expands laterally downstream of the lower lip compression waves 224 00:05:21,909 --> 00:05:21,919 of the lower lip compression waves 225 00:05:21,919 --> 00:05:22,469 of the lower lip compression waves reflect 226 00:05:22,469 --> 00:05:22,479 reflect 227 00:05:22,479 --> 00:05:25,189 reflect off the upper and lower shear layers and 228 00:05:25,189 --> 00:05:25,199 off the upper and lower shear layers and 229 00:05:25,199 --> 00:05:26,070 off the upper and lower shear layers and a very thin 230 00:05:26,070 --> 00:05:26,080 a very thin 231 00:05:26,080 --> 00:05:30,550 a very thin shear layer emanates from the side wall 232 00:05:30,550 --> 00:05:30,560 233 00:05:30,560 --> 00:05:32,469 the high temperature high stress 234 00:05:32,469 --> 00:05:32,479 the high temperature high stress 235 00:05:32,479 --> 00:05:35,189 the high temperature high stress requirements of modern aircraft engines 236 00:05:35,189 --> 00:05:35,199 requirements of modern aircraft engines 237 00:05:35,199 --> 00:05:37,270 requirements of modern aircraft engines necessitate the development of novel 238 00:05:37,270 --> 00:05:37,280 necessitate the development of novel 239 00:05:37,280 --> 00:05:38,390 necessitate the development of novel materials 240 00:05:38,390 --> 00:05:38,400 materials 241 00:05:38,400 --> 00:05:40,550 materials the study of which can greatly benefit 242 00:05:40,550 --> 00:05:40,560 the study of which can greatly benefit 243 00:05:40,560 --> 00:05:43,670 the study of which can greatly benefit from computational material science 244 00:05:43,670 --> 00:05:43,680 from computational material science 245 00:05:43,680 --> 00:05:47,430 from computational material science metals ceramics polymers and composites 246 00:05:47,430 --> 00:05:47,440 metals ceramics polymers and composites 247 00:05:47,440 --> 00:05:48,310 metals ceramics polymers and composites of these 248 00:05:48,310 --> 00:05:48,320 of these 249 00:05:48,320 --> 00:05:51,110 of these are all employed to satisfy the high 250 00:05:51,110 --> 00:05:51,120 are all employed to satisfy the high 251 00:05:51,120 --> 00:05:52,070 are all employed to satisfy the high temperature 252 00:05:52,070 --> 00:05:52,080 temperature 253 00:05:52,080 --> 00:05:55,350 temperature strength and durability requirements 254 00:05:55,350 --> 00:05:55,360 strength and durability requirements 255 00:05:55,360 --> 00:05:57,430 strength and durability requirements material science is concerned with 256 00:05:57,430 --> 00:05:57,440 material science is concerned with 257 00:05:57,440 --> 00:05:59,909 material science is concerned with phenomena that range from rapid material 258 00:05:59,909 --> 00:05:59,919 phenomena that range from rapid material 259 00:05:59,919 --> 00:06:01,029 phenomena that range from rapid material processes 260 00:06:01,029 --> 00:06:01,039 processes 261 00:06:01,039 --> 00:06:03,029 processes with solidification rates measured in 262 00:06:03,029 --> 00:06:03,039 with solidification rates measured in 263 00:06:03,039 --> 00:06:04,150 with solidification rates measured in meters per second 264 00:06:04,150 --> 00:06:04,160 meters per second 265 00:06:04,160 --> 00:06:07,270 meters per second in melt spinning to deposition rates of 266 00:06:07,270 --> 00:06:07,280 in melt spinning to deposition rates of 267 00:06:07,280 --> 00:06:08,629 in melt spinning to deposition rates of microns per hour 268 00:06:08,629 --> 00:06:08,639 microns per hour 269 00:06:08,639 --> 00:06:11,990 microns per hour in chemical vapor deposition 270 00:06:11,990 --> 00:06:12,000 in chemical vapor deposition 271 00:06:12,000 --> 00:06:14,469 in chemical vapor deposition in chemical vapor deposition high 272 00:06:14,469 --> 00:06:14,479 in chemical vapor deposition high 273 00:06:14,479 --> 00:06:15,990 in chemical vapor deposition high temperature coatings 274 00:06:15,990 --> 00:06:16,000 temperature coatings 275 00:06:16,000 --> 00:06:18,710 temperature coatings fibers and semiconductors such as 276 00:06:18,710 --> 00:06:18,720 fibers and semiconductors such as 277 00:06:18,720 --> 00:06:19,990 fibers and semiconductors such as silicon carbide are 278 00:06:19,990 --> 00:06:20,000 silicon carbide are 279 00:06:20,000 --> 00:06:23,510 silicon carbide are made this process involves injecting a 280 00:06:23,510 --> 00:06:23,520 made this process involves injecting a 281 00:06:23,520 --> 00:06:24,790 made this process involves injecting a nutrient gas 282 00:06:24,790 --> 00:06:24,800 nutrient gas 283 00:06:24,800 --> 00:06:27,590 nutrient gas into a reactor in which the gas then 284 00:06:27,590 --> 00:06:27,600 into a reactor in which the gas then 285 00:06:27,600 --> 00:06:28,710 into a reactor in which the gas then undergoes several 286 00:06:28,710 --> 00:06:28,720 undergoes several 287 00:06:28,720 --> 00:06:31,670 undergoes several gas phase chemical reactions as it 288 00:06:31,670 --> 00:06:31,680 gas phase chemical reactions as it 289 00:06:31,680 --> 00:06:32,870 gas phase chemical reactions as it passes across 290 00:06:32,870 --> 00:06:32,880 passes across 291 00:06:32,880 --> 00:06:36,550 passes across a heated susceptor subsequent surface 292 00:06:36,550 --> 00:06:36,560 a heated susceptor subsequent surface 293 00:06:36,560 --> 00:06:39,510 a heated susceptor subsequent surface reactions deposit the needed materials 294 00:06:39,510 --> 00:06:39,520 reactions deposit the needed materials 295 00:06:39,520 --> 00:06:43,590 reactions deposit the needed materials in this case silicon on the susceptor 296 00:06:43,590 --> 00:06:43,600 in this case silicon on the susceptor 297 00:06:43,600 --> 00:06:46,390 in this case silicon on the susceptor the computer simulation shown includes 298 00:06:46,390 --> 00:06:46,400 the computer simulation shown includes 299 00:06:46,400 --> 00:06:49,830 the computer simulation shown includes the 3d aspects of the reactor 300 00:06:49,830 --> 00:06:49,840 the 3d aspects of the reactor 301 00:06:49,840 --> 00:06:52,309 the 3d aspects of the reactor strong natural buoyancy causes 302 00:06:52,309 --> 00:06:52,319 strong natural buoyancy causes 303 00:06:52,319 --> 00:06:54,710 strong natural buoyancy causes substantial distortions of convecting 304 00:06:54,710 --> 00:06:54,720 substantial distortions of convecting 305 00:06:54,720 --> 00:06:55,670 substantial distortions of convecting fields 306 00:06:55,670 --> 00:06:55,680 fields 307 00:06:55,680 --> 00:06:58,390 fields shown here as path lines of neutrally 308 00:06:58,390 --> 00:06:58,400 shown here as path lines of neutrally 309 00:06:58,400 --> 00:07:00,710 shown here as path lines of neutrally buoyant particles 310 00:07:00,710 --> 00:07:00,720 buoyant particles 311 00:07:00,720 --> 00:07:02,469 buoyant particles subsequent distortions in both the 312 00:07:02,469 --> 00:07:02,479 subsequent distortions in both the 313 00:07:02,479 --> 00:07:05,270 subsequent distortions in both the temperature and reacting species fields 314 00:07:05,270 --> 00:07:05,280 temperature and reacting species fields 315 00:07:05,280 --> 00:07:07,950 temperature and reacting species fields are evident resulting in severe 316 00:07:07,950 --> 00:07:07,960 are evident resulting in severe 317 00:07:07,960 --> 00:07:09,270 are evident resulting in severe non-uniformities 318 00:07:09,270 --> 00:07:09,280 non-uniformities 319 00:07:09,280 --> 00:07:13,110 non-uniformities in coating thickness and structure 320 00:07:13,110 --> 00:07:13,120 in coating thickness and structure 321 00:07:13,120 --> 00:07:15,830 in coating thickness and structure additional analyses show an excellent 322 00:07:15,830 --> 00:07:15,840 additional analyses show an excellent 323 00:07:15,840 --> 00:07:17,909 additional analyses show an excellent agreement between the experimental and 324 00:07:17,909 --> 00:07:17,919 agreement between the experimental and 325 00:07:17,919 --> 00:07:19,990 agreement between the experimental and numerical deposition rates on the 326 00:07:19,990 --> 00:07:20,000 numerical deposition rates on the 327 00:07:20,000 --> 00:07:21,990 numerical deposition rates on the susceptor 328 00:07:21,990 --> 00:07:22,000 susceptor 329 00:07:22,000 --> 00:07:24,150 susceptor this study shows that computational 330 00:07:24,150 --> 00:07:24,160 this study shows that computational 331 00:07:24,160 --> 00:07:25,670 this study shows that computational material science 332 00:07:25,670 --> 00:07:25,680 material science 333 00:07:25,680 --> 00:07:28,469 material science can provide information important for 334 00:07:28,469 --> 00:07:28,479 can provide information important for 335 00:07:28,479 --> 00:07:29,430 can provide information important for the understanding 336 00:07:29,430 --> 00:07:29,440 the understanding 337 00:07:29,440 --> 00:07:32,550 the understanding and design of new materials 338 00:07:32,550 --> 00:07:32,560 and design of new materials 339 00:07:32,560 --> 00:07:34,710 and design of new materials the nasa lewis research center couples 340 00:07:34,710 --> 00:07:34,720 the nasa lewis research center couples 341 00:07:34,720 --> 00:07:37,670 the nasa lewis research center couples computational and experimental programs 342 00:07:37,670 --> 00:07:37,680 computational and experimental programs 343 00:07:37,680 --> 00:07:39,990 computational and experimental programs for efficiently meeting the requirements 344 00:07:39,990 --> 00:07:40,000 for efficiently meeting the requirements 345 00:07:40,000 --> 00:07:43,589 for efficiently meeting the requirements of modern aircraft engines 346 00:07:43,589 --> 00:07:43,599 of modern aircraft engines 347 00:07:43,599 --> 00:07:45,350 of modern aircraft engines the development and practical 348 00:07:45,350 --> 00:07:45,360 the development and practical 349 00:07:45,360 --> 00:07:47,350 the development and practical application of advanced numerical 350 00:07:47,350 --> 00:07:47,360 application of advanced numerical 351 00:07:47,360 --> 00:07:48,950 application of advanced numerical simulation codes 352 00:07:48,950 --> 00:07:48,960 simulation codes 353 00:07:48,960 --> 00:07:51,670 simulation codes for propulsion systems will require 354 00:07:51,670 --> 00:07:51,680 for propulsion systems will require 355 00:07:51,680 --> 00:07:52,550 for propulsion systems will require increases 356 00:07:52,550 --> 00:07:52,560 increases 357 00:07:52,560 --> 00:07:55,749 increases in computing power that is speed 358 00:07:55,749 --> 00:07:55,759 in computing power that is speed 359 00:07:55,759 --> 00:07:58,469 in computing power that is speed and memory these advances will have to 360 00:07:58,469 --> 00:07:58,479 and memory these advances will have to 361 00:07:58,479 --> 00:08:00,070 and memory these advances will have to be matched by improvements in 362 00:08:00,070 --> 00:08:00,080 be matched by improvements in 363 00:08:00,080 --> 00:08:01,990 be matched by improvements in computational support 364 00:08:01,990 --> 00:08:02,000 computational support 365 00:08:02,000 --> 00:08:04,230 computational support program development and computer 366 00:08:04,230 --> 00:08:04,240 program development and computer 367 00:08:04,240 --> 00:08:05,749 program development and computer graphics 368 00:08:05,749 --> 00:08:05,759 graphics 369 00:08:05,759 --> 00:08:07,510 graphics the graphics tools are especially 370 00:08:07,510 --> 00:08:07,520 the graphics tools are especially 371 00:08:07,520 --> 00:08:09,670 the graphics tools are especially important because of the massive amounts 372 00:08:09,670 --> 00:08:09,680 important because of the massive amounts 373 00:08:09,680 --> 00:08:12,790 important because of the massive amounts of data that need to be understood 374 00:08:12,790 --> 00:08:12,800 of data that need to be understood 375 00:08:12,800 --> 00:08:15,670 of data that need to be understood the lewis goal in scientific computing 376 00:08:15,670 --> 00:08:15,680 the lewis goal in scientific computing 377 00:08:15,680 --> 00:08:17,990 the lewis goal in scientific computing is to provide high performance graphics 378 00:08:17,990 --> 00:08:18,000 is to provide high performance graphics 379 00:08:18,000 --> 00:08:19,350 is to provide high performance graphics workstations 380 00:08:19,350 --> 00:08:19,360 workstations 381 00:08:19,360 --> 00:08:22,230 workstations having access to parallel processors 382 00:08:22,230 --> 00:08:22,240 having access to parallel processors 383 00:08:22,240 --> 00:08:23,189 having access to parallel processors mainframe 384 00:08:23,189 --> 00:08:23,199 mainframe 385 00:08:23,199 --> 00:08:27,270 mainframe and supercomputers nasa lewis research 386 00:08:27,270 --> 00:08:27,280 and supercomputers nasa lewis research 387 00:08:27,280 --> 00:08:30,070 and supercomputers nasa lewis research center is moving as rapidly as possible 388 00:08:30,070 --> 00:08:30,080 center is moving as rapidly as possible 389 00:08:30,080 --> 00:08:31,589 center is moving as rapidly as possible towards the establishment of a 390 00:08:31,589 --> 00:08:31,599 towards the establishment of a 391 00:08:31,599 --> 00:08:34,230 towards the establishment of a high-performance computing environment 392 00:08:34,230 --> 00:08:34,240 high-performance computing environment 393 00:08:34,240 --> 00:08:36,550 high-performance computing environment that will satisfy the long-term 394 00:08:36,550 --> 00:08:36,560 that will satisfy the long-term 395 00:08:36,560 --> 00:08:37,670 that will satisfy the long-term experimental 396 00:08:37,670 --> 00:08:37,680 experimental 397 00:08:37,680 --> 00:08:40,469 experimental and computational needs of future 398 00:08:40,469 --> 00:08:40,479 and computational needs of future 399 00:08:40,479 --> 00:09:27,910 and computational needs of future aircraft engine design 400 00:09:27,910 --> 00:09:27,920 401 00:09:27,920 --> 00:09:30,000 you