【作者】 杨京龙； 何枫； 谢峻石； 许宏庆；

【Author】 YANG Jingbng, HE Feng, XU Hongqing(Dep. of Eng. Mech., Tsinghua University, Beijing 100084)

【机构】 清华大学工程力学系；

【摘要】 为了研究总压探针测量方法在欠膨胀超音速射流中的可行性,论文采用非结构网格有限体积法对含探针和不含探针的射流流场进行数值模拟,并通过对两个计算结果的比较,给出这种测量方法的参考性评价。为了证明数值方法及计算结果的可靠性,给出了相同条件下纹影流场显示和总压探针测量等实验结果。更多还原

【Abstract】 In this paper a numerical analysis method of estimating the total pressure measure error has been developed by means of comparison between the numerical simulation of underexpanded supersonic jet flow with a total pressure probe and that without total pressure probe. Schlieren photograph visualization and total pressure measurement were carried out for validating the feasibility of this numerical analysis method. As a example, the estimation of total pressure measure error has been given at pressure ratio 4:1 under the size condition of φ1.3 mm and φ6mm of total pressure probe outside diameter and nozzle exit inside diameter respectively. This method also can be applied to estimate total pressure measure error in other supersonic flow.更多还原