CFD Simulations and experimental investigation of nucleate pool boiling of liquid nitrogen

Abstract

Pool boiling heat transfer is a very efficient mode of heat transfer. It is used in various energy conversion and heat exchange systems and in the cooling of high energy density electronic components. In this work, heat transfer during nucleate boiling for a brass ribbon horizontally immersed in liquid nitrogen is experimentally and numerically studied. An experimental apparatus was built to conduct a pool boiling heat transfer study. The capabilities of Computational fluid dynamics (CFD) boiling model in pool boiling heat transfer is investigated. The computational model used combines the Euler/Euler two-phase flow. The general measurements of the super-heat, the influences of super-heat on the triggering of the boiling, as well as the critical flux which represents an important issue for the security of the systems were analyzed. The results of numerical simulations were compared with experimental data.