Abstract

A computational and experimental analysis of the properties and fundamental features of a turbulent boundary layer on an elongated axisymmetric body of revolution under conditions of an incompressible flow around it at the Reynolds number \(\mathrm{Re}_L = 4.33\cdot 10^6\) is carried out. It is shown that the experimental values of the local and integral parameters of the boundary layer on the body of revolution are in reasonable agreement with the results of a numerical calculation performed by solving the Reynolds-averaged Navier-Stokes equations using the low-Reynolds version of the \(k{-}w\) SST turbulence model. The data obtained indicate the need for careful contouring of the aft part of the body of revolution in order to minimize losses caused by the bottom drag of the aft end.

中文翻译：

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绕大纵横比旋转体的轴对称湍流的物理和数学模拟

摘要

在雷诺数 \(\mathrm{Re}_L = 4.33\cdot 10^6 \) 进行。结果表明，旋转体边界层局部参数和积分参数的实验值与使用低雷诺版本求解雷诺平均纳维-斯托克斯方程的数值计算结果具有合理的一致性的 \（K { - }瓦特\）  SST湍流模型。获得的数据表明，需要对回转体的尾部进行仔细的轮廓设计，以最大限度地减少尾部底部阻力造成的损失。