﻿ 低速风洞测试干扰数值分析
 舰船科学技术  2019, Vol. 41 Issue (2): 61-64 PDF

1. 武汉第二船舶设计研究所，湖北 武汉 430064;
2. 华中科技大学，湖北 武汉 430074

Interference effects by numerical analysis in low-speed wind tunnel test
CHEN Xiao-zou1, WAN Yu-xiang2
1. Wuhan Second Ship Design and Research Institute,Wuhan 430064,China;
2. Huazhong University of Science and Technology, Wuhan 430074, China
Abstract: The wind tunnel wall and the mounting frame are two main interference effects in the low speed wind tunnel test. The influence of the wall interference and the support interference on the resistance test results are verified through numerical simulation by using Suboff model. Meanwhile, the reliability of the classic image method for low-speed wind tunnel tests was verified. Wind tunnel test numerical simulation results have been effectively corrected by the method.
Key words: wave buoy     wave parameter     portability     wave following characteristic
0 引　言

1 理论基础 1.1 控制方程

 $\frac{{\partial {{\bar u}_i}}}{{\partial {x_i}}} = 0{\text{，}}$ (1)
 $\frac{{\partial {{\bar u}_i}}}{{\partial t}} + \frac{{\partial {{\bar u}_i}{{\bar u}_j}}}{{\partial {x_j}}} = {F_i} - \frac{1}{\rho }\frac{{\partial \bar p}}{{\partial {x_i}}} + \nu \frac{{{\partial ^2}{{\bar u}_i}}}{{\partial {x_j}\partial {x_j}}} - \frac{{\partial \overline {u_i'u_j'} }}{{\partial {x_j}}}{\text{。}}$ (2)

 $\frac{\partial }{{\partial t}}\left( {\rho k} \right) + \frac{\partial }{{\partial {x_i}}}\left( {\rho k{u_i}} \right) = \frac{\partial }{{\partial {x_j}}}\left( {{\varGamma _k}\frac{{\partial k}}{{\partial {x_j}}}} \right) + {G_k} - {Y_k} + {S_k}{\text{，}}$ (3)
 $\frac{\partial }{{\partial t}}\left( {\rho \omega } \right) + \frac{\partial }{{\partial {x_i}}}\left( {\rho \omega {u_i}} \right) = \frac{\partial }{{\partial {x_j}}}\left( {{{\varGamma }_\omega }\frac{{\partial \omega }}{{\partial {x_j}}}} \right) + {G_\omega } - {Y_\omega } + {S_\omega }{\text{。}}$ (4)
1.2 数值方法

1.3 边界条件

2 研究对象及其干扰分析方法 2.1 研究对象

 图 1 Suboff模型及安装示意图 Fig. 1 Sub