NDLI: Numerical analysis of forced convection heat transfer in first wall rib-roughened channels for liquid lithium lead blanket

Content Provider	IEEE Xplore Digital Library
Author	Weihua Wang Desheng Cheng Yunqing Bai Songlin Liu Xi Pei
Copyright Year	2009
Description	Author affiliation: New Star Institute of Applied Technology, Huangshan Road 451, Hefei, 230031, China (Weihua Wang) \|\| Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, 230031, China (Desheng Cheng; Yunqing Bai; Songlin Liu; Xi Pei)
Abstract	The first wall as the key component of the liquid metal blanket must withstand and remove the maximum heat flux from the plasma chamber and high power density LiPb breeder zone. A suitable countermeasure would be artificial roughening of the coolant channel wall facing the plasma for intensifying heat exchange. The rib-roughened coolant channels with high pressure helium gas for FDS series liquid lithium lead blanket were designed to enhance the turbulence heat transfer in comparison with smooth coolant channels. Heat transfer coefficients and friction factors in rib-roughened coolant channels of the first wall are investigated using the computational fluid dynamics code FLUENT??based on the two dimensional physical model and periodic condition. From the results of the numerical analysis, the turbulence heat transfer Nusselt number (Nu) in the rectangular channels of rib-roughened face is higher 200% than those in the smooth channels, and the fraction coefficient (ƒ) between the helium gas and CLAM steel structure is 20% more than those in the smooth channels. The numerically optimized parameters are also presented considering different convexity part height and width as well.
Starting Page	1
Ending Page	4
File Size	352739
Page Count	4
File Format	PDF
ISBN	9781424426355
DOI	10.1109/FUSION.2009.5226437
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Numerical analysis Heat transfer Lithium Helium Coolants Thermal stresses Plasma density Steel Fluid flow Plasma temperature Lithium lead blanket First wall
Content Type	Text
Resource Type	Article

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