Research on attenuation law of turbulent kinetic energy in uniform flow based on two-equation turbulence model

doi:10.19912/j.0254-0096.tynxb.2020-0829

	Research on attenuation law of turbulent kinetic energy in uniform flow based on two-equation turbulence model
	Li, Deshun 1,2,3; Ma, Guolin 1; Guo, Tao 1; Xu, Quan 1
刊名	Taiyangneng Xuebao/Acta Energiae Solaris Sinica
	2022-04-28
卷号	43 期号:4 页码:418-427
关键词	Atmospheric boundary layer Atmospheric thermodynamics Atmospheric turbulence Kinetic energy Kinetics Numerical models Turbulence models Wind turbines Atmospheric conditions Attenuation law Energy attenuation Flow based Theoretical derivations Turbulence kinetic energy Turbulence kinetic energy attenuation Turbulent kinetic energy Two-equation turbulence models Uniform flow
ISSN号	0254-0096
DOI	10.19912/j.0254-0096.tynxb.2020-0829
英文摘要	Through theoretical derivation and numerical simulation, the attenuation law of turbulence kinetic energy and the essential physical difference among the standard k-ω model, the standard k-ω model and the SST k-ω turbulence model are analyzed from the determination process of the closure coefficients of the turbulence model, the influencing factors of the diffusion term of the transport equation, the inlet boundary conditions, the grid size and so on, the attenuation law of turbulence kinetic energy under neutral atmospheric conditions is analyzed by numerical simulation. The results show that in uniform flow, when the standard k-ω turbulence model is used and the inlet turbulence intensity is relatively small or the eddy viscosity is relatively large, the attenuation of turbulence kinetic energy is higher than that of the standard k-ω model and the SST k-ω model, under neutral atmospheric conditions, when the SST k-ω turbulence model is used and the pressure outlet condition is used as the top boundary, the velocity, turbulent kinetic energy, and specific dissipation rate profiles are better maintained. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158496]
专题	能源与动力工程学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Gansu Provincial Technology Centre for Wind Turbines, Lanzhou; 730050, China; 3.Key Laboratory of Fluid Machinery and Systems of Gansu Province, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Li, Deshun,Ma, Guolin,Guo, Tao,et al. Research on attenuation law of turbulent kinetic energy in uniform flow based on two-equation turbulence model[J]. Taiyangneng Xuebao/Acta Energiae Solaris Sinica,2022,43(4):418-427.
APA	Li, Deshun,Ma, Guolin,Guo, Tao,&Xu, Quan.(2022).Research on attenuation law of turbulent kinetic energy in uniform flow based on two-equation turbulence model.Taiyangneng Xuebao/Acta Energiae Solaris Sinica,43(4),418-427.
MLA	Li, Deshun,et al."Research on attenuation law of turbulent kinetic energy in uniform flow based on two-equation turbulence model".Taiyangneng Xuebao/Acta Energiae Solaris Sinica 43.4(2022):418-427.