【摘要】 对于10°、20°锥柱体,用跨肯速小扰动位势流的混合有限差分格式,用跨音速完全位势流的旋转差分格式与简易差分格式,做了数值计算。完全位势方程旋转差分格式与简易差分格式得到的数值结果是一致的,但前者的计算马赫数范围为宽。20°锥柱体完全位势方程的数值结果与实验结果,基本一致,只在顶部与肩部有些差异。小扰动位势方程的数值计算对于10°锥桂体是适用的,对于20°锥柱体足不适用的。更多还原

【Abstract】 In this paper, numerical computed results are presented for 10°, 20° cone-cylinder,using a mixed finite difference scheme for the transonic small disturbance potential equation, and using a rotational difference scheme as well as a simple difference scheme for the full potential equation. The computations show that numerical results of the full potential equation from a rotational difference scheme agree well with that from a simple difference scheme, but the range of computational Mach numbers for the first scheme is more wide. Numerical results of the full potential equation for the 20° cone-cylinder basically agree with the experimental ones, except for some difference on the nose and on the shoulder. Numerical computions of the small disturbance potential equation are suitable for the 10° cone-cylinder, but are not suitable for the 20° one.更多还原