Modeling Ice-Cover Melting Using a Variable Heat Transfer Coefficient
Publication: Journal of Engineering Mechanics
Volume 122, Issue 10
Abstract
In cold regions, rivers may be partially or completely ice covered during a good part of the year. Under these conditions, heat transfer between the river flow and the atmosphere occurs simultaneously at the ice-air and ice-water interfaces of the ice cover. Heat flux from the water to the ice is the most dominant factor in the growth and decay processes of the river ice. A proper evaluation of the heat transfer coefficient at the ice-water interface is the key for an accurate computation of the heat flux and, consequently, for determining ice-cover melting. A variable heat transfer coefficient for both the entry region and for the fully established flow region was derived. The effects of this coefficient on the computation of ice-cover melting are addressed in this paper through the use of a two-dimensional numerical model. The new approach as well as other constant empirical equations used to evaluate the heat transfer coefficient were respectively used in the model to examine their effects on ice melting. Results of computations using the new approach were in a better overall agreement with experimental observations, including the leading edge region.
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Information
Published In
Journal of Engineering Mechanics
Volume 122 • Issue 10 • October 1996
Pages: 930 - 938
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: Oct 1, 1996
Published in print: Oct 1996
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