Effect of heat source on statistics and scaling in compressible homogeneous shear turbulence

Chen, Yuandong1,2,3; Wang, Xiaoning1,2,3; Jiang, Zhou4; Wang, Jianchun1,2,3

2021-12-01

10.1063/5.0069089

PHYSICS OF FLUIDS   影响因子和分区

1070-6631

1089-7666

The effects of heat sources on the velocity and pressure spectra, Mach number scaling of one-point statistics, and small-scale structures of compressible homogeneous shear turbulence are numerically studied. The dilatational components of flow fields are significantly enhanced by a strong heat source at low turbulent Mach numbers M-t and are dominated by an acoustic mode, leading to a strong acoustic equilibrium between the dilatational velocity and pressure. As the magnitude of the heat source increases, the scaling behaviors of the dilatational components of kinetic energy and dissipation rate change from M t 4 and approach a state that is nearly independent of the turbulent Mach number. Furthermore, a strong heat source has a significant effect on small-scale structures at low turbulent Mach numbers. The conditional probability density functions of the normalized eigenvalues of a strain rate tensor become more dependent on the dilatation owing to the effect of the heat source. For low turbulent Mach numbers with strong heat sources, the ratio of the normalized eigenvalues of the strain rate tensor tends to -1:0:0 and -0.2:0.25:1 in the strong compression and strong expansion regions, respectively, and the dilatational vortex stretching term can significantly enhance the enstrophy production.

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China (NSFC)[91952104,12172161,92052301,91752201] ; National Numerical Windtunnel Project[NNW2019ZT1-A04] ; China Postdoctoral Science Foundation (CPSF)[2020M672409] ; Shenzhen Science and Technology Program[KQTD20180411143441009] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0103] ; Department of Science and Technology of Guangdong Province[2020B1212030001]

Mechanics ; Physics

Mechanics ; Physics, Fluids & Plasmas

WOS:000731946900011

AIP Publishing

20220211432635

Acoustic fields ; Aerodynamics ; Kinetic energy ; Kinetics ; Mach number ; Probability density function ; Shear flow ; Strain rate ; Tensors ; Turbulence

Fluid Flow, General:631.1 ; Aerodynamics, General:651.1 ; Acoustics, Noise. Sound:751 ; Algebra:921.1 ; Probability Theory:922.1 ; Classical Physics; Quantum Theory; Relativity:931 ; Mechanical Variables Measurements:943.2

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Guangdong Hong Kong Macao Joint Lab Data Driven F, Shenzhen 518055, Peoples R China
3.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China
4.Chongqing Univ, Coll Aerosp Engn, 174 Shazheng St, Chongqing 400044, Peoples R China

Chen, Yuandong,Wang, Xiaoning,Jiang, Zhou,et al. Effect of heat source on statistics and scaling in compressible homogeneous shear turbulence[J]. PHYSICS OF FLUIDS,2021,33(12).

Chen, Yuandong,Wang, Xiaoning,Jiang, Zhou,&Wang, Jianchun.(2021).Effect of heat source on statistics and scaling in compressible homogeneous shear turbulence.PHYSICS OF FLUIDS,33(12).

Chen, Yuandong,et al."Effect of heat source on statistics and scaling in compressible homogeneous shear turbulence".PHYSICS OF FLUIDS 33.12(2021).