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兵工学报 ›› 2001, Vol. 22 ›› Issue (3): 385-387.

• 短文 • 上一篇    下一篇

轴对称阶梯型面管道内流场数值分析

鞠玉涛、武晓松   

  1. 南京理工大学机械学院,江苏南京,210094
  • 收稿日期:2000-09-01 修回日期:2001-06-01 上线日期:2014-12-25
  • 通讯作者: 鞠玉涛

Computation of Flow Field in Axisymmetric Ladder Conduct

Ju Yutao, Wu Xiaosong   

  1. School of Mechanics, NUST,Nanjing, 210094
  • Received:2000-09-01 Revised:2001-06-01 Online:2014-12-25
  • Contact: Ju Yutao

摘要: 采用雷诺平均的N-S方程,对收敛一扩张一圆管和收敛一圆管两种复杂型面管道内流场进行了数值仿真,得到了流场结构变化规律。研究表明,由于圆管存在,会使圆管出口的流体速度降低,压力增高,喷管效率降低。

关键词: 数值仿真 , 纳维一斯托克斯方程 , 喷管

Abstract: The characteristics of flow field in contraction-extension-tube and contraction-tube are investigated by a numerical method. The results suggest that the Mach number decreases and the pressure increases when the gas spurt out from tube, while the nozzle efficiency tends to decrease.

Key words: numerical simulation , Navier-Stokes equation , nozzle

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