用CFD计算不可压缩湍流边界层引起的壁面压力谱

Proceeding of Tenth International Symposium on Turbulence and Shear Flow Phenomena Pub Date : 1900-01-01 DOI:10.1615/tsfp10.680

M. Slama, C. Leblond, P. Sagaut

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引用次数: 0

摘要

提出了一种基于RANS解的紊流边界层壁面压力谱计算方法。高雷诺数流，如在船舶建筑研究中遇到的，被考虑。该模型基于泊松方程的积分解来求解壁面压力的具体方程。提出了一种新的模型，即扩展各向异性模型(EAM)，用于描述为闭合方程所必需的时空速度相关性。将该方法应用于平板上的湍流边界层流动，得到了令人满意的频率压力谱。

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COMPUTATION OF WALL PRESSURE SPECTRA FROM CFD RANS SOLUTIONS INDUCED BY INCOMPRESSIBLE TURBULENT BOUNDARY LAYERS

A method is developed to compute the wall pressure spectrum under a turbulent boundary layer based on RANS solutions. HighReynolds number flows, such as the ones encountered in naval architecture studies, are considered. The model solves a specific equation for the wall pressure, based on the integral solution of a Poisson equation. A new model is proposed, the Extended Anisotropic Model (EAM), for the space-time velocity correlations which are necessary in order to close the equation. The method is applied to a turbulent boundary layer flow over a flat plate and satisfying results are obtained for the frequency pressure spectrum.

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Proceeding of Tenth International Symposium on Turbulence and Shear Flow Phenomena

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