|Table of Contents|

Numerical simulation of natural cooling vapor chamber(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2017年03期
Page:
377-
Research Field:
Publishing date:

Info

Title:
Numerical simulation of natural cooling vapor chamber
Author(s):
Hu LinnaLi Qiang
School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
Keywords:
natural cooling vapor chambers classical phase change theory volume of fluid(VOF)function two-phase flow vapor-liquid phase change
PACS:
TK124
DOI:
10.14177/j.cnki.32-1397n.2017.41.03.016
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.

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Last Update: 2017-06-30