LIQUID-METAL HEAT-TRANSFER IN TURBULENT PIPE-FLOW WITH UNIFORM WALL FLUX

[[abstract]]This paper presents an investigation of the thermal entry-region problem for liquid metal turbulent flow inside a round pipe. The effect of axial conduction is taken into account in both upstream and downstream directions. The exact solution is obtained by using the method of separation of variables for parameters, 5 Pe 1000 and 0.001 4000. The Prandtl numbers cover the full range of liquid metals. Excellent agreement is observed upon comparison of the resulting Nusselt numbers with the available experimental data in both the entrance and fully developed regions. The solution also indicates that the fully developed Nusselt number depends only on the Reynolds number at low Peclet numbers. The interpolation formula Nu = 3.01 Re0.0833 is found to fit the calculated data well for Pe < 100.[[fileno]]2020203010015[[department]]動機