基于时均流场的湍流边界层内壁面压力脉动功率谱计算方法研究  

Calculation method for power spectral density of wall pressure fluctuation in turbulent boundary layer based on time-averaged flow field

作　　者：孙新蕾 潘治[2,3] 和卫平 杨路春[2] SUN Xinlei;PAN Zhi;HE Weiping;YANG Luchun(College of Ship and Ocean,Naval University of Engineering,Wuhan 430033,China;Wuhan Second Ship Design and Research Institute,Wuhan 430205,China;School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]海军工程大学舰船与海洋学院,武汉430033 [2]武汉第二船舶设计研究所,武汉430205 [3]华中科技大学船舶与海洋工程学院,武汉430074

出　　处：《振动与冲击》2024年第21期174-179,193,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(92252203)。

摘　　要：针对湍流边界层内壁面压力脉动功率谱的计算问题,该文结合Grasso修订的TNO-Blake解析模型、RANS(Reynolds average Navier-Stokes)时均流场解,发展一种脉动压力计算方法,近壁面附近采用RANS数值解,对于壁面附近湍流各向异性特性,流向和横向异性模型参数采用Stalnov推荐数值,法向异性模型参数采用试验参数,对某平板上一点处的压力脉动功率谱进行了计算,分析了湍流能谱模型、迁移速度等影响,并与Goody模型结果进行对比。研究表明,该文计算方法合理可行,能快速获取壁面压力脉动功率谱,可为工程装备设计的振动噪声分析提供输入。Here,aiming at the calculation problem of wall pressure fluctuation power spectral density in turbulent boundary layer,a fluctuation pressure calculation method was proposed by combining TNO-Blake analytical model revised by Grasso and RANS time-averaged flow field solution.RANS numerical solution was used for area near wall,for turbulence anisotropy characteristics near wall surface,Stalnov’s recommended values were adopted for flow direction and transverse direction anisotropy model parameters.Test parameters were adopted for normal direction anisotropy model parameters.The pressure fluctuation power spectral density at a point on a certain flat plate was calculated,and effects of turbulence energy spectrum model,migration velocity,etc.were analyzed.The results were compared with the results of Goody model.The study showed that the proposed calculation method is reasonable and feasible;it can quickly obtain wall pressure fluctuation power spectral density,and provide input for vibration noise analysis of engineering equipment design.

关 键 词：时均流场 湍流边界层 压力脉动功率谱 

分 类 号：U661.44[交通运输工程—船舶及航道工程]