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A 2D model of a rectangular single-phase natural circulation loop(SPNSL) with a magnetohydrodynamic power generator (MHDG) using low-temperature liquid metal (LM) as the working fluid is presented in this work.Two pairs of magnets were applied, one on the heater and another one on the cooler.The SPNCL is considered to dispense with the moving mechanical parts needed to drive the working flow through the system.Using Low-temperature liquid metal is considered cheap, easy to handle, low-grade heat sources, and low-cost permeant magnets.The parametric study was presented for the effect of Rayleigh number (Ra), Aspect ratio (Ar), and Hartmann number (Ha) on the Reynolds Number (Re), Nusselt Number (Nu) and generated electrical current, and power for Mercury as the working fluid,using numerical software.Furthermore, the comparison between Mercury and Gallium was presented.Verification results were presented in good agreement with the literature results.Moreover, the statistical analysis was investigated, using factorial analysis and the response surface method using statistical software for Ra, Ar, Ha, and type of liquid metal (TLM).The statistical results using the response surface method show fair agreement with the existing CFD results.The Re increases with the increase of the Ra and decreases with increasing the Ha and Ar.Increasing the Ar requires an increase in the Ra and Ha to obtain the maximum electrical power.By comparing the performance of Mercury with Gallium, Gallium generated more electrical power than Mercury.
Tashtoush et al. (Thu,) studied this question.