含喷流的尾支风洞实验模型底压计算及分析

本文简要地叙述了作者发展的基于Chapman-Korst理论的超声速底部压强计算方法及计算程序CRMBP,并用它分析了在风洞中做有关喷流的一种实验方法。这种方法用一空心通气杆穿过模型喷管支撑模型和给喷管提供高压气体,并测量底压及力。本文给出了关联有/无此通气尾支杆底压的曲线,以说明这种实验方法的适用范围。这些曲线还可用来分析和修正这种实验方法的实验数据。

Computation and Analysis of Base Pressure for Experiment Models With an Exhaust Jet Supported by a Trailing Sting in Wind Tunnels

Computational method and CRMBP code, based on Chapman-Korst theory, of supersonic base pressure with an exhaust jet is described and applied to inquire into an experimental technique concerning the jet in wind tunnels. The technique uses a pipe with high pressure gas to support an experiment model through its nozzel and measures base pressure and force. A set of graphs correlating the base pressure with and without the pipe sting is presented to indicate the applicable range of the technique. The graphs can also be utilized to analyse and correct the experiment data measured with the technique.