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Thermocapillary flow about an evaporating meniscusThe steady motion and thermal behavior of an evaporating superheated liquid in a small cavity bounded by isothermal sidewalls is examined. Scaling analyses and a two-dimensional finite element model are used to investigate the influence of thermocapillarity, buoyancy, and temperature-dependent mass flux on flowfield, interfacial heat transfer, and meniscus morphology. Numerical investigations indicate the existence of two counter-rotating cells symmetric about the cavity center. Results also show that evaporation tends to counteract this circulation by directing flow toward the hotter sidewalls. Although thermocapillarity and evaporation yield different flowfield distributions, both effects tend to increase interfacial temperature and heat transfer.
Document ID
19920065222
Document Type
Conference Paper
Authors
Schmidt, G. R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Chung, T. J. (Alabama, University Huntsville, United States)
Date Acquired
August 15, 2013
Publication Date
July 1, 1992
Subject Category
FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number
AIAA PAPER 92-2863
Distribution Limits
Public
Copyright
Other