Turbulence compressibility reduction with helicity

doi:10.1063/5.0089333

	Turbulence compressibility reduction with helicity
	Yang Y(杨焱)1 ; Zhu JZ 2,3
通讯作者	Zhu, Jian-Zhou(jz@sccfis.org)
发表期刊	PHYSICS OF FLUIDS
	2022-04-01
卷号	34 期号:4 页码:6
ISSN	1070-6631
摘要	A numerical test of isotropic turbulence compressibility reduction with helicity in a cyclic box is performed. The ratios of compressibility-relevant-mode spectra over those of kinetic energy present power laws at large wavenumbers in the dissipation range, indicating a common difference of 11/15 in the exponents of the algebraic prefactor of the nonhelical power spectra over those of helical ones. Our results being not derived from the shapes of the spectra themselves, the implied information about the helicity effect on the complex singularities of the discretized dynamical system can be of reasonable value for insight of the Navier-Stokes equation, though the high-order finite difference scheme used for computation may not be as accurate in the dissipation range as the state-of-the-art of incompressible turbulence with the pseudo-spectral method. Possible applications in controlling flows, for the purpose of, say, decreasing turbulence noise, are also discussed according to the spectral fluctuations.& nbsp;Published under an exclusive license by AIP Publishing.& nbsp;
DOI	10.1063/5.0089333
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000790391900003
关键词[WOS]	COMPLEX SINGULARITIES ; INTERMITTENCY
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	National Natural Science Foundation of China (NSFC)[11672102] ; National Natural Science Foundation of China (NSFC)[11602277]
项目资助者	National Natural Science Foundation of China (NSFC)
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Zhu, Jian-Zhou
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/89088
专题	高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China; 2.Su Cheng Ctr Fundamental & Interdisciplinary Sci, Nanjing 211316, Peoples R China; 3.Nanchang Univ, Fluid Inst, Nanchang 330031, Peoples R China
推荐引用方式 GB/T 7714	Yang Y,Zhu JZ. Turbulence compressibility reduction with helicity[J]. PHYSICS OF FLUIDS,2022,34,4,:6.
APA	杨焱,&Zhu JZ.(2022).Turbulence compressibility reduction with helicity.PHYSICS OF FLUIDS,34(4),6.
MLA	杨焱,et al."Turbulence compressibility reduction with helicity".PHYSICS OF FLUIDS 34.4(2022):6.

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