跨声速风洞模型试验非线性洞壁干扰修正方法研究  被引量:2

INVESTIGATION ON NONLINEAR WALLINTERFERENCE CORRECTION FOR MODELTESTS IN TRANSONIC WIND TUNNEL

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作  者:范召林[1] 陈作斌[1] 贺中[1] 张玉伦[1] 尹陆平[1] 恽起麟[1] 

机构地区:[1]中国空气动力研究与发展中心

出  处:《流体力学实验与测量》1998年第2期9-19,共11页Experiments and Measurements in Fluid Mechanics

摘  要:简要介绍了CARDC高速所结合风洞试验和CFD两种手段,发展的跨声速三维非线性洞壁干扰修正方法。该方法采用Euler方程和N-S方程模拟模型的绕流场,以实测的跨声速透气壁附近的压力分布作为风洞流场的边界条件,数值求解模型的风洞流场和自由流场,由两者之差得到洞壁干扰对模型气动力的影响。通过流场可视化软件可直观方便地分析洞壁干扰对跨声速模型绕流的影响。该方法已应用于七个模型在几种不同风洞试验段中的跨声速洞壁干扰修正,结果令人满意。This paper briefly describes a nonlinear three dimensional transonic wall interference correction method,developed in High Speed Aerodynamics Institute of CARDC by combining wind tunnel test and CFD.In this method,flow field over the model is simulated by Euler and NS equations,the measured pressure distributions near the transonic ventilated walls are used as the boundary conditions of tunnel flow field,and the differences between tunnel flow field and free flow field over the model which are numerically solved are taken as wall effects.Influences of wall interference on the structure of transonic flow field over the model can be directly and conveniently analyzed.This method has been applied to transonic wall interference correction for seven models in various test sections,and the results are satisfactory.

关 键 词:洞壁干扰 跨声速流 风洞试验 修正 数值模拟 

分 类 号:V211.71[航空宇航科学与技术—航空宇航推进理论与工程] V211.3

 

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