Journal of Shanghai Jiao Tong University ›› 2016, Vol. 50 ›› Issue (03): 384-388.

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Numerical Analysis of Air Layer Thickness of Horizontally Enclosed Square Cavity

HE Fangxiang,ZHAN Shulin,LAI Junying   

  1. (Department of Civil Engineering, Zhejiang University, Hangzhou 310027, China)
  • Received:2015-08-14 Online:2016-03-28 Published:2016-03-28

Abstract: Abstract: In order to analyze the relatively optimal air layer thickness of the horizontally enclosed square cavity based on its thermal insulation, this paper established a twodimensional numerical model and calculated the radiation and convection heat transfer in the horizontally closed square cavity at different temperature differences and different thermal conductivities of the solid boundary material by using the “Presto!” pressure interpolation scheme and SIMPLE (semiimplicit method for pressurelinked equations) decoupling algorithm. The relative optimal air layer thickness values of the horizontally closed square cavity at different temperature difference and thermal conductivity of the boundary material under a certain condition were obtained from the regression analysis of the results.

Key words: Key words: horizontally enclosed square cavity, numerical calculation, optimum air layer thickness, regression analysis

CLC Number: