Relations for the coefficients of transformation of disturbances to pressure oscillations for the case of long-wave disturbances of the external flow are derived from the general analytical solution of the inviscid problem of disturbance interaction with an oblique shock wave on a wedge. Numerical simulations of interaction of long-wave disturbances with a shock wave on a flat plate aligned at an angle of attack in the interval 5°–20° for a viscous flow regime are performed. Deviations of the transformation coefficients simulated for the viscous case from the inviscid analytical solution in the long-wave approximation are calculated, and corrections for viscous-inviscid interaction in the analytical solution are obtained.

对于外部流的长波扰动，扰动转换系数与压力振荡的系数之间的关系是从对楔形斜波与扰动相互作用的无粘性问题的一般解析解得出的。进行了长波扰动与冲击波在粘性流动状态下以攻角在5°–20°间隔排列的平板上相互作用的数值模拟。在长波近似中，计算了针对粘性情况的模拟变换系数与非粘性分析解的偏差，并获得了对解析溶液中粘性-非粘性相互作用的校正。