Numerical Study of the Effects of Injection Fluctuations on Liquid Nitrogen Spray Cooling
作者： Rong Xue , Yixiao Ruan , Xiufang Liu , Liang Chen , Liqiang Liu
DOI: 10.3390/PR7090564
关键词: Mechanics 、 Volume (thermodynamics) 、 Inlet 、 Heat transfer 、 Turbulence kinetic energy 、 Computational fluid dynamics 、 Mass flow rate 、 Liquid nitrogen 、 Materials science 、 Evaporation
摘要: Spray cooling with liquid nitrogen is increasingly utilized as an efficient approach to achieve cryogenic cooling. Effects of injection mass flow rate fluctuations on the evaporation, temperature distribution, and droplet distribution a spray field were examined by employing validated Computational Fluid Dynamics (CFD) numerical model. The results indicated that enhanced volume-averaging turbulent kinetic energy promoted evaporation whole field. strengthened heat transfer between droplets surrounding vapor created fluctuating led lower volume. A relatively smaller size more inhomogeneous obtained under unsteady inlet. changes frequency amplitude had little effects overall development. could enrich knowledge relation inevitable development performance in practical system fluids.
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