A Fully Coupled Variable Properties Thermohydraulic Model for a Cryogenic Hydrostatic Journal Bearing

[+] Author and Article Information
M. J. Braun, R. L. Wheeler

Department of Mechanical Engineering, The University of Akron, Akron, OH 44325

R. C. Hendricks

NASA Lewis Research Center, Cleveland, OH 44135

J. Tribol 109(3), 405-414 (Jul 01, 1987) (10 pages) doi:10.1115/1.3261459 History: Received March 10, 1986; Online October 29, 2009


The goal set forth here is to continue the work started by Braun et al. [11] and present an integrated analysis of the behavior of the two row, 20 staggered pockets, hydrostatic cryogenic bearing used by the turbopumps of the space shuttle main engine (SSME). The variable properties Reynolds equation is fully coupled with the 2-D fluid film energy equation [η = η(P, T)]. The 3-D equations of the shaft and bushing model the boundary conditions of the fluid film energy equation. The effects of shaft eccentricity, angular velocity and inertia pressure drops at pocket edge are incorporated in the model. Their effects on the bearing fluid properties, load carrying capacity, mass flow, pressure, velocity and temperature form the ultimate object of this paper.

Copyright © 1987 by ASME
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