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Simulation of cryogenic liquid flows with vapor bubblesLiquid flows in rocket engine components (such as bearings, seals, and pumps) often involve the formation of vapor bubbles due to local superheating of the fluid (either boiling or cavitation). Under the present effort, an analysis has been developed for liquid flows with vapor bubbles, based on a combined Eulerian-Lagrangian technique, in which the continuous (liquid) phase is treated by solving a system of Eulerian conservation equations, while the discrete (vapor bubble) phase is dealt with by integrating Lagrangian equations of motion in computational coordinates. Vapor bubbles of changing size can be accommodated easily by this analysis, and models for the simulation of bubble formation, growth, and motion have been included. The effect of bubble motion and other bubble processes on the continuous (liquid) phase has been accounted for by appropriate bubble mass, momentum, and energy interchange source terms in the Eulerian conservation equations. To demonstrate the viability of the resulting procedure, the cavitating flow of liquid oxygen through a simplified model of a labyrinth seal has been successfully calculated.
Document ID
19910059552
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
De Jong, Frederik J.
(Scientific Research Associates, Inc. Glastonbury, CT, United States)
Sabnis, Jayant S.
(Scientific Research Associates, Inc. Glastonbury, CT, United States)
Date Acquired
August 15, 2013
Publication Date
June 1, 1991
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 91-2257
Accession Number
91A44175
Funding Number(s)
CONTRACT_GRANT: NAS8-38438
Distribution Limits
Public
Copyright
Other

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