DNS of the turbulence modulation by dispersed particles in compressible spatially developing two-phase jets

查看全文 作　　者：LUOKun FANJianren [1]CENKefa

机构地区：[1]InstituteforThermalPowerEngineeringandCE&EE,ZhejiangUniversity,Hangzhou310027,China

出　　处：《Progress in Natural Science:Materials International》索引2004年第14卷第9期,共5页

基　　金：theNationalNaturalScienceKeyFoundationofChina(GrantNo.50236030) 摘　　要：A new two way coupled direct numerical simulation (DNS) method is developed to study the turbulence modulation in the compressible and spatial developing particle laden turbulent jets with higher Reynolds number. The high resolution solver is performed for the gas phase flow field and the Lagrangian method is used to trace particles. It is found that the particles with Stokes number of 0.01 and 50 advance the evolution of the coherent structures in the flow field, but the particles with Stokes number of 1 delay it. All particles increase the turbulent kinetic energy and decrease the vorticity thickness, in which the particles with the Stokes number of 1 exhibit the maximum modulation. The jet velocity half width and the decay of the streamwise mean velocity along the centerline are reduced by particles with Stokes number of 0.01 and 1. The momentum thickness is increased by particles and the larger the Stokes number is, the larger the momentum thickness is. 关键词：直接数字模拟 DNS 紊流调制气固两相射流两路耦合紧缩空间

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DNS of the turbulence modulation by dispersed particles in compressible spatially developing two-phase jets

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