水洞收缩段流场的数值模拟及优选  

Numerical Simulation and Optimization for Contraction Flow of Water Tunnel

作　　者：吴宗成[1] 陈晏清[1] 万曦[1] 

机构地区：[1]北京航空航天大学飞行器设计与应用力学系

出　　处：《北京航空航天大学学报》1998年第3期315-318,共4页Journal of Beijing University of Aeronautics and Astronautics

摘　　要：介绍了一种水洞非对称收缩段的数值模拟方法和程序，计算采用有限体积预估修正格式求解非定常欧拉方程．结合具体水洞设计对几种典型收缩曲线的三维流场进行了计算和分析，给出了沿轴向的压力分布，出口截面速度分布及分布的均匀性，选出最佳曲线，为水洞的设计提供依据．结果表明：本文的计算方法和程序对于水洞或风洞的三元收缩段，是有价值的分析和辅助设计手段．A numerical method and computer program for nonsymmetrical contraction flow of a water tunnel are described in this paper, which use the finite volume approach to solve the unsteady Euler equation, the basic algorithm is the explicit predictorcorrector scheme of MacCormack. For several typical contraction curve, the threedimensional flow field calculation is made, the wall pressures along the centerlines or corner lines at top or bottom and velocity distributions of exit section are obtained, the results are compared to choose the optimal contraction curve to meet the design needs. It is shown that this approach and program are valid for the threedimensional contraction design.

关 键 词：水洞 数值模拟 最佳收缩曲线 优选 流场 

分 类 号：V211.751[航空宇航科学与技术—航空宇航推进理论与工程] V211.3