Numerical analysis of turbulent heat transfer to liquid metal flowing in a tube and an annuli

Heat transfer to liquid metals has some special characteristics due to their high thermal conductivity, and for the cause of the complexity of the turbulent heat transfer mechanism, it's impossible or difficult to obtain the accurate analytical solutions. With the help of numerical calculation, however, the satisfactory results may be obtained. Based on wide comparison of a great number of expressions for different factors relative to the Nusselt number Nu, the author in the present paper not only tested their applicabilities, but also studied liquid-metal heat transfer both in a tube and a annulus under the constant heat flux boundary condition by means of numerical solutions. The obtained results in the paper better agree with those of the other authors'. (author)