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International Heat Transfer Conference 11

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)


David Christopher
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, China

Bu-Xuan Wang
Laboratory of Phase Change and Interfacial Transport Phenomena, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China


Marangoni, or surface tension driven, convection around a vapor bubble in microgravity is investigated numerically to evaluate the effects of the Marangoni flow on the heat transfer around the vapor bubble. The Navier-Stokes equations are solved numerically with the energy equation in both the liquid and vapor regions around the vapor bubble using the finite element method. The results are then compared with interferometer images of flow around a bubble in microgravity. The results show that the Marangoni flow results in a thermal wake behind the bubble and causes some increase in the heat transfer over pure conduction.

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