【摘要】 本文提出了以粘性参数K=M_∞/√Re_D为变量的球阻系数的简单关系式。它适用于高超声速稀薄气流的情况,在Re_D=5×10~2～10~5;M_∞=8～25的范围中与实验数据吻合。此外,按此式计算的球阻系数而得到的标定球的动压值与由皮托压力测定所得结果一致。更多还原

【Abstract】 This paper presents a simple relationship between the drag coefficient of sphere and the viscous parameter in the region of rarefied hypersonic flow.It agrees fairly with many experimental results in the range of ReD=5×102~105;M∞=8~25.And in many cases,the dynamic pressures derived from the calibrating spheres with the drag coefficients given by the formula coincide with those obtained by measuring the pitot pressures.更多还原