Numerical Simulation and Optimization for Contraction Flow of Water Tunnel
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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.Abstract: 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.
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1 .林超强,苏耀西,洪 流. 矩形风洞收缩段流场的计算和分析. 空气动力学学报,1991,9(4):379~385 2. Jacock J L,Kneile K R. Computation of three-dimensional time-dependent flow using the Euler equations. AEDC-TR-80-49,1980 3. 王 岩.水洞矩形收缩段三维流场数值计算与分析:[学位论文].北京:北京航空航天大学飞行器设计与应用力学系,1995 4. Stratford B S. The prediction of separation of the turbulent boundary layer. Journal of Fluid Mechanics,1959,5(1):33~52 -
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