Fluid-to-Fluid Scaling of Heat Transfer in Supercritical Fluids
Model fluid technique has been widely applied in the thermal-hydraulic studies of nuclear engineering. In spite of growing activities of heat transfer at supercritical conditions using model fluids, there does still not exist any reliable fluid-to-fluid scaling methods, to transfer the test data in model fluids directly to the conditions of prototype fluid. This paper presents a fluid-to-fluid scaling method for heat transfer in circular tubes cooled with supercritical fluids. Based on conservation equations and boundary conditions, on set of dimensionless numbers and the requirements of a complete scaling are determined. Scaling of pressure and temperature ensures the similarity of thermo-physical properties of various fluids. A new dimensionless number, presenting the product of the so-called pseudo Boiling number, Reynolds number and Prandtl number, is applied to scale heat flux. The distortion approach is used to scale mass flux. The preliminary validation results show good feasibility and reasonable accuracy of the proposed scaling method.
X. Cheng X.J. Liu H.Y. Gu
School of Nuclear Science and Engineering Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai 200240, China
国际会议
上海
英文
1381-1389
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）