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RESEARCH PAPERS

One-Dimensional Analysis of the Hydrodynamic and Thermal Characteristics of Thin Film Flows Including the Hydraulic Jump and Rotation

[+] Author and Article Information
S. Thomas, W. Hankey, A. Faghri

Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435

T. Swanson

NASA Goddard Space Flight Center, Greenbelt, MD 20771

J. Heat Transfer 112(3), 728-735 (Aug 01, 1990) (8 pages) doi:10.1115/1.2910447 History: Received February 21, 1989; Revised August 10, 1989; Online May 23, 2008

Abstract

The flow of a thin liquid film with a free surface along a horizontal plate that emanates from a pressurized vessel is examined numerically. In one g, a hydraulic jump was predicted in both plane and radial flow, which could be forced away from the inlet by increasing the inlet Froude number or Reynolds number. In zero g, the hydraulic jump was not predicted. The effect of solid-body rotation for radial flow in one g was to “wash out” the hydraulic jump and to decrease the film height on the disk. The liquid film heights under one g and zero g were equal under solid-body rotation because the effect of centrifugal force was much greater than that of the gravitational force. The heat transfer to a film on a rotating disk was predicted to be greater than that of a stationary disk because the liquid film is extremely thin and is moving with a very high velocity.

Copyright © 1990 by The American Society of Mechanical Engineers
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