Modeling of Heat Transfer and Flow Patterns in a Porous Wick of a Mechanically Pumped Loop Heat Pipe: Parametric Study Using ANSYS Fluent
University of Nevada, Reno Modeling of Heat Transfer and Flow Patterns in a Porous Wick of a Mechanically Pumped Loop Heat Pipe: Parametric Study Using ANSYS Fluent A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering by Md Shujan Ali Dr. Miles Greiner, Thesis Advisor May, 2017 THE GRADUATE SCHOOL We recommend that the thesis prepared under our supervision by MD SHUJAN ALI Entitled Modeling of Heat Transfer And Flow Patterns In A Porous Wick of A Mechanically Pumped Loop Heat Pipe: Parametric Study Using ANSYS Fluent be accepted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Miles Greiner, Ph. D., Advisor Mustafa Hadj-Nacer, Ph. D., Co-advisor and Committee Member Sage R. Hiibel, Ph. D., Graduate School Representative David W. Zeh, Ph.D., Dean, Graduate School May, 2017 i ABSTRACT In recent years, NASA space exploration has achieved new feats due to advancement in aerodynamics, propulsion, and other related technologies. Future missions, including but not limited to manned mission to Mars, deep space exploratory missions, and orbit transfer vehicles, require advanced thermal management system. Current state-of-the-art for spacecrafts is a mechanically pumped single phase cooling loop that are not enough to meet thermal-related challenges for future space missions. Loop heat pipes (LHP) are the solution for the required thermal management system that is compact, light-weight, reliable, precise, and energy efficient. These are two-phase systems that employ capillary forces instead of pumps to circulate the coolant. In these devices, the coolant evaporates and condenses in the evaporator and condenser, respectively.
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