| 三维壁面效应对微喷管性能影响的数值计算 |
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| 引用本文： | 童军杰,岑继文. 三维壁面效应对微喷管性能影响的数值计算[J]. 微纳电子技术, 2011, 48(6): 384-390. DOI: 10.3969/j.issn.1671-4776.2011.06.007 |
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| 作者姓名： | 童军杰 岑继文 |
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| 作者单位： | 1. 广东海洋大学工程学院,广东湛江,524006
2. 中国科学院广州能源研究所微能源系统实验室,广州,510640 |
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| 基金项目： | 国家青年科学基金资助项目(50906092) |
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| 摘 要： | 以FLUENT6.1为工具进行并行计算,数值计算求解二维和三维稳态可压缩Navier-Stokes方程,模拟了三维壁面效应对扁平形状硅收缩-扩张微喷管内温度和压力的影响,进而研究了三维壁面效应对微喷管的流量系数和推力效率性能的影响。数值计算结果表明:对于喉部深宽比较小的扁平形微喷管,三维壁面效应较大,三维喷管内流体的速度小于相应的二维喷管内流体的速度,而三维喷管内流体的温度大于相应的二维喷管内流体的温度;二维数值计算的流量和推力均大于对应的三维数值计算结果,其差值随着喉部特征雷诺数的减小而增大。二维数值计算结果不能正确预测喷管出口实际流量和微推力。
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| 关 键 词： | 并行计算 微喷管 三维壁面效应 流量系数 推力效率 |
Numerical Calculation for the Influence of Three-Dimensional Wall Effect on the Performance of Micro Nozzles |
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| Tong Junjie,Cen Jiwen. Numerical Calculation for the Influence of Three-Dimensional Wall Effect on the Performance of Micro Nozzles[J]. Micronanoelectronic Technology, 2011, 48(6): 384-390. DOI: 10.3969/j.issn.1671-4776.2011.06.007 |
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| Authors: | Tong Junjie Cen Jiwen |
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| Affiliation: | Tong Junjie1,Cen Jiwen2(1.Engineering College,Guangdong Ocean University,Zhanjiang 524006,China,2.Micro Energy System Laboratory,Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China) |
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| Abstract: | Using FLUENT6.1 as the tool,the parallel computing was conducted to solve the steady compressible Navier-Stokes equations with two-dimension and three-dimension.The influences of three-dimensional wall effect on temperature and pressure in the flat convergent-divergent micro nozzle were simulated,then the flow coefficient and thrust efficiency performance of the micro nozzle were studied.The numerical results show that the three-dimensional wall effect is larger for the flat micro nozzle with the smaller th... |
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| Keywords: | parallel computing micro nozzle three-dimensional wall effect flow coefficient thrust force efficiency |
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