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对超音速条件下倒角型总压探针的校准特性进行了数值模拟研究,并对影响校准特性的关键影响量进行了分析,得到了总压系数随着位置、压力、总温、马赫数几个关键参数的变化规律。数值模拟结果和实验结果进行了对比,二者较为接近。研究结果表明,安装位置的选择对倒角总压探针总压系数影响较大,探针的安装位置越接近风洞上游,总压系数绝对值越小;倒角型总压探针总压系数的绝对值随温度和压力的升高而减小,随马赫数的升高而增大。
The calibration characteristics of the chamfered total pressure probes under supersonic condition were numerically simulated and the key influencing factors of calibration characteristics were analyzed. The relationship between total pressure coefficient and position, pressure, total temperature, Mach number Several key parameters of the law of change. Numerical simulation results and experimental results were compared, the two are more similar. The results show that the choice of installation location has a great influence on the total pressure coefficient of the chamfered total pressure probe. The closer the probe is installed to the upstream of the wind tunnel, the smaller the absolute value of the total pressure coefficient. The total pressure of the chamfered total pressure probe The absolute value of the coefficient decreases with increasing temperature and pressure and increases with Mach number.