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	Numerical analysis of the enhanced convection heat transfer in an annular finned tube with laminar pulsating flow
	Yu Jiecheng ; Li Zhixin
	2010-05-10 ; 2010-05-10
关键词	Theoretical or Mathematical/ convection flow simulation numerical analysis pipe flow pulsatile flow vortices/ numerical analysis convection heat transfer enhancement annular finned tube laminar pulsating flow steady flow dimensionless pulsation frequency fin height fin pitch vortex velocity fields temperature/ A4725Q Convection and heat transfer A4760 Flows in ducts, channels, and conduits A4730 Rotational flow, vortices, buoyancy and other flows involving body forces A0260 Numerical approximation and analysis A4710 General fluid dynamics theory, simulation and other computational methods E2130 Fluid mechanics and aerodynamics (mechanical engineering) E0210L Numerical analysis
中文摘要	The convection heat transfer enhancement induced by pulsating flow in an annular finned tube was investigated numerically. The numerical results show that the pulsating flow enhances the convection heat transfer more than twice that of steady flow at the same Re/sub m/. The heat transfer enhancement depends on the pulsation frequency, the fin height and the fin pitch. The best dimensionless pulsating frequencies are 400 ~ 1000 and they increase with increasing Re/sub m /. The enhancement is due to the pulsating flow strengthening the vortex between the fins and improving the coordination of the temperature and velocity fields.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/22567]
专题	清华大学
推荐引用方式 GB/T 7714	Yu Jiecheng,Li Zhixin. Numerical analysis of the enhanced convection heat transfer in an annular finned tube with laminar pulsating flow[J],2010, 2010.
APA	Yu Jiecheng,&Li Zhixin.(2010).Numerical analysis of the enhanced convection heat transfer in an annular finned tube with laminar pulsating flow..
MLA	Yu Jiecheng,et al."Numerical analysis of the enhanced convection heat transfer in an annular finned tube with laminar pulsating flow".(2010).

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