中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Numerical Study of Heat Transfer Mechanism in Turbulent Supercritical CO2 Channel Flow

文献类型:会议论文

作者Li XL(李新亮); Hashimoto K; Tominaga Y; Tanahashi M; Miyauchi T; Li XL
出版日期2008
会议名称7th ASME/JSME Thermal Engineering Conference/Summer Heat Transfer Conference
会议日期JUL 08-12, 2007
会议地点Vancouver, CANADA
通讯作者邮箱mtanahas@mes.titech.ac.jp
关键词Turbulent Heat Transfer Supercritical Flow Direct Numerical Simulation Turbulent Channel Flow Simulation Equation State
页码112-123
通讯作者Li XL
中文摘要Direct numerical simulation (DNS) of supercritical CO2 turbulent channel flow has been performed to investigate the heat transfer mechanism of supercritical fluid. In the present DNS, full compressible Navier-Stokes equations and Peng-Robison state equation are solved. Due to effects of the mean density variation in the wall normal direction, mean velocity in the cooling region becomes high compared with that in the heating region. The mean width between high-and low-speed streaks near the wall decreases in the cooling region, which means that turbulence in the cooling region is enhanced and lots of fine scale eddies are created due to the local high Reynolds number effects. From the turbulent kinetic energy budget, it is found that compressibility effects related with pressure fluctuation and dilatation of velocity fluctuation can be ignored even for supercritical condition. However, the effect of density fluctuation on turbulent kinetic energy cannot be ignored. In the cooling region, low kinematic viscosity and high thermal conductivity in the low speed streaks modify fine scale structure and turbulent transport of temperature, which results in high Nusselt number in the cooling condition of the supercritical CO2.
收录类别CPCI-S
会议录Journal Of Thermal Science And Technology
会议录出版者Tokyo
会议录出版地Japan Soc Mechanical Engineers
语种英语
WOS记录号WOS:000264829800013
源URL[http://dspace.imech.ac.cn/handle/311007/25364]  
专题力学研究所_力学所知识产出(1956-2008)
通讯作者Li XL
推荐引用方式
GB/T 7714
Li XL,Hashimoto K,Tominaga Y,et al. Numerical Study of Heat Transfer Mechanism in Turbulent Supercritical CO2 Channel Flow[C]. 见:7th ASME/JSME Thermal Engineering Conference/Summer Heat Transfer Conference. Vancouver, CANADA. JUL 08-12, 2007.

入库方式: OAI收割

来源:力学研究所

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