南京理工大学学报（自然科学版）2017，Vol.41Issue(3)：377-385,9.DOI:10.14177/j.cnki.32-1397n.2017.41.03.016
自然冷却均温板数值模拟
Numerical simulation of natural cooling vapor chamber
摘要
Abstract
A new natural cooling vapor chamber is proposed for no noise and temperature uniformity of electronic equipments.Two-phase fluid pipelines are set in the vapor chamber.Heat transfer performance and temperature uniformity are enhanced through the vapor-liquid phase change of working fluid.A new flow and heat transfer model is created using the classical phase change theory combining the volume of fluid(VOF)function equation,and the two-phase flow,heat transfer and vapor-liquid phase change process in the vapor chamber are simulated.Simulation results show that the vapor chamber works under gravity mostly;when the filling ratio is 70%,the temperature difference and the thermal resistance are the smallest;the heat transfer performance of the working fluid R134a is better than that of R236fa and R245fa.关键词
自然冷却/均温板/经典相变理论/流体体积函数/两相流动/气液相变Key words
natural cooling/vapor chambers/classical phase change theory/volume of fluid(VOF)function/two-phase flow/vapor-liquid phase change分类
能源科技引用本文复制引用
胡琳娜,李强..自然冷却均温板数值模拟[J].南京理工大学学报（自然科学版）,2017,41(3):377-385,9.基金项目
国家自然科学基金(51225602) （51225602）
