Accession Number : ADA303690

Title :   An Efficient Numerical Procedure for Thermohydrodynamic Analysis of Cavitating Bearings.

Descriptive Note : Final contract rept.,

Corporate Author : TOLEDO UNIV OH

Personal Author(s) : Vijayaraghavan, D.

PDF Url : ADA303690

Report Date : JUL 1995

Pagination or Media Count : 27

Abstract : In this paper, an efficient and accurate numerical procedure to determine the thermo.hydrodynamic performance of cavitating bearings is described. This procedure is based on the earlier development of Elrod for lubricating films, in which the properties across the film thickness are determined at Lobatto points and their distributions are expressed by collocated polynomials. The cavitated regions and their boundaries are rigorously treated. Thermal boundary conditions at the surfaces, including heat dissipation through the metal to the ambient, are incorporated. Numerical examples are presented comparing the predictions using this procedure with earlier theoretical predictions and experimental data. With a few points across the film thickness and across the journal and the bearing in the radial direction, the temperature profile is very well predicted. (AN)

Descriptors :   *THERMAL ANALYSIS, *CAVITATION, *JOURNAL BEARINGS, HEAT TRANSFER, PRESSURE GRADIENTS, MATHEMATICAL MODELS, ALGORITHMS, THERMODYNAMICS, COMPUTATIONAL FLUID DYNAMICS, TEMPERATURE GRADIENTS, MATHEMATICAL PREDICTION, POLYNOMIALS, NUMERICAL METHODS AND PROCEDURES, HEAT FLUX, VISCOUS FLOW, VISCOSITY, THERMAL BOUNDARY LAYER, HYDRODYNAMICS, LUBRICATING FILMS, HEAT LOSS, COUETTE FLOW, LEGENDRE FUNCTIONS.

Subject Categories : Fluid Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE