Mean velocity and temperature scaling for near-wall turbulence with heat transfer at supercritical pressure

doi:10.1063/5.0002855

HFCAS OpenIR

	Mean velocity and temperature scaling for near-wall turbulence with heat transfer at supercritical pressure
	Wan, Teng 1; Zhao, Pinghui 2; Liu, Jiaming 1; Wang, Chaozheng 1; Lei, Mingzhun2
	2020-05-01
发表期刊	PHYSICS OF FLUIDS
ISSN	1070-6631
通讯作者	Zhao, Pinghui(phzhao@mail.ustc.edu.cn)
摘要	Compared with conventional gaseous and liquid fluids, fluids operating at supercritical pressure undergo drastic variations in thermophysical properties within a small temperature range across the pseudo-critical point. Therefore, the effect of these variations on flow and heat transfer must be studied. This paper presents direct numerical simulations (DNSs) of the turbulent heat transfer of CO2 at supercritical pressure in a fully developed channel flow between two isothermal walls. The thermophysical property tables generated from the REFPROF 9.1 database were used in this DNS. The velocity and temperature scaling and the analogy between momentum and scalar transport are comprehensively explored by using stress balance and semi-local methods. The results show that at small temperature differences, the velocity transformation developed by Trettel and Larsson ["Mean velocity scaling for compressible wall turbulence with heat transfer," Phys. Fluids 28, 026102 (2016)] with a semi-local coordinate provides a good description of the near-wall turbulence of supercritical fluids. Upon including how large specific-heat variations affect temperature transformation, the logarithmic region of the cooled wall becomes consistent, as does the heated wall in a certain temperature range. In addition, in near-wall turbulence with small temperature differences at supercritical pressure, momentum transport is highly analogous to scalar transport.
DOI	10.1063/5.0002855
关键词[WOS]	DIRECT NUMERICAL-SIMULATION ; MIXED CONVECTION ; CHANNEL FLOW ; FORCED-CONVECTION ; CARBON-DIOXIDE ; BOUNDARY-LAYER ; FLUID ; STATISTICS ; WATER ; DNS
收录类别	SCI
语种	英语
资助项目	Collaborative Innovation Program of Hefei Science Center, CAS[2019HSC-CIP006] ; National Key Research and Development Program of China[2017YFE0300500] ; National Key Research and Development Program of China[2017YFE0300503]
项目资助者	Collaborative Innovation Program of Hefei Science Center, CAS ; National Key Research and Development Program of China
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
WOS记录号	WOS:000533632200003
出版者	AMER INST PHYSICS
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/103228
专题	中国科学院合肥物质科学研究院
通讯作者	Zhao, Pinghui
作者单位	1.Univ Sci & Technol China, Sch Phys Sci, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
通讯作者单位	中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Wan, Teng,Zhao, Pinghui,Liu, Jiaming,et al. Mean velocity and temperature scaling for near-wall turbulence with heat transfer at supercritical pressure[J]. PHYSICS OF FLUIDS,2020,32.
APA	Wan, Teng,Zhao, Pinghui,Liu, Jiaming,Wang, Chaozheng,&Lei, Mingzhun.(2020).Mean velocity and temperature scaling for near-wall turbulence with heat transfer at supercritical pressure.PHYSICS OF FLUIDS,32.
MLA	Wan, Teng,et al."Mean velocity and temperature scaling for near-wall turbulence with heat transfer at supercritical pressure".PHYSICS OF FLUIDS 32(2020).