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Analysis of the thermal performance of heat pipe radiatorsA comprehensive mathematical model and computational methodology are presented to obtain numerical solutions for the transient behavior of a heat pipe radiator in a space environment. The modeling is focused on a typical radiator panel having a long heat pipe at the center and two extended surfaces attached to opposing sides of the heat pipe shell in the condenser section. In the set of governing equations developed for the model, each region of the heat pipe - shell, liquid, and vapor - is thermally lumped to the extent possible, while the fin is lumped only in the direction normal to its surface. Convection is considered to be the only significant heat transfer mode in the vapor, and the evaporation and condensation velocity at the liquid-vapor interface is calculated from kinetic theory. A finite-difference numerical technique is used to predict the transient behavior of the entire radiator in response to changing loads.
Document ID
19910054161
Document Type
Conference Paper
Authors
Boo, J. H. (Hankuk Aviation University Seoul, Republic of Korea, United States)
Hartley, J. G. (Georgia Institute of Technology Atlanta, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
FLUID MECHANICS AND HEAT TRANSFER
Meeting Information
AIAA/ASME Thermophysics and Heat Transfer Conference(Seattle, WA)
Funding Number(s)
CONTRACT_GRANT: NAG1-551
Distribution Limits
Public
Copyright
Other