| S形扩张管道三维流场的数值模拟 |
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| 引用本文： | 马汉东,李锋,周伟江,汪翼云.S形扩张管道三维流场的数值模拟[J].计算物理,1995,12(1):37-40. |
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| 作者姓名： | 马汉东 李锋 周伟江 汪翼云 |
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| 作者单位： | 北京空气动力研究所, 北京 100074 |
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| 摘 要： | 采用改进的Beam-Warirling格式离散完全Navier-Stokes方程数值模拟了矩形变截面S形扩张管道内部亚跨声速层流流动,给出了流场的细致结构,并与文献1]的计算结果进行了比较.结果表明:流场基本特性一致,二次流则较为清晰合理.
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| 关 键 词： | 内流 数值模拟 分离 二次流 扩张管 |
| 收稿时间： | 1993-05-29 |
| 修稿时间： | 1994-03-07 |
THE NUMERICAL SIMULATION OF FLOW IN S-SHAPED DIFFUSER |
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| Ma Handong,Li Feng,Zhou Weijiang,Wang Yiyun.THE NUMERICAL SIMULATION OF FLOW IN S-SHAPED DIFFUSER[J].Chinese Journal of Computational Physics,1995,12(1):37-40. |
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| Authors: | Ma Handong Li Feng Zhou Weijiang Wang Yiyun |
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| Institution: | Beijing Institute of Aerodynamics P.O.Box 7201, 100074 |
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| Abstract: | Three-dimension, compressible, internal flow solution obtained using a modifiedBeam-Warming implicit factorization scheme is presented. Steady-state solution is obtained by solving numerically the full Navier-Stokes equations from given initial conditions until the time-dependent terms become negligible. The configuration considered is a rectangular cross-section, S-shaped centreline diffuser duct with an exit/inlet area ratio of 2.25. TheMach number at the duct entrance is 0.9 with a Raynolds number of 5.82×105. Two regions of separated flow exist within the diffuser. The detail flow field especially the developement process of secondary velocity patterns in transverse plane are pressented. Comparing with the results ofRef.1]. they have a good agreement. The secondary velocity patterns are more reasonable. |
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| Keywords: | internal flow numerical computation separation secondary vortex diffuser |
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