209 使用済燃料の乾式貯蔵に関する伝熱実験(O.S.2-2 企業・大学等における熱工学研究の最前線(2))(オーガナイズドセッション2 企業・大学等における熱工学研究の最前線)

概要

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To establish the method for evaluating the heat removal capability in a dry storage facility of nuclear spent fuel, fluid flow and heat transfer characteristics in a turbulent combined-convection boundary layer have been investigated experimentally. Instantaneous velocity and temperature in the boundary layer was measured with normal hot and cold wires, and it was revealed that with increasing in freestream velocity, the turbulent combined-convection flow suddenly changes to laminar one. With transition, a reduction in heat transfer rate and an increase in wall shear stress was observed. In addition, the guideline indicating the occurrence of a laminarization of boundary layer was proposed: Grx/Rex≃3×10^6
一般社団法人日本機械学会の論文
2000-03-10