Modeling of a pulsed fluid column and coupled piping with structural finite elementsStructural finite elements have been used to model the coupled fluidic-structural response of a liquid oxygen (LOX) feedline at a rocket engine test facility. The model simulates the effects of Pogo pulsing, a test procedure which uses a piston in a side branch to impart an oscillatory pressure pulse to the LOX column as it feeds the engine. In addition to the feedline's structural characteristics, the model accounts for the mass and axial stiffness of the fluid column, the oscillatory pulse of the piston, and the hydraulic impedance of the rocket engine. The model was used to determine the relations between piston stroke, pressure oscillation at the engine inlet, and structural excitation of the feedline. This paper develops the concepts employed by the model.
Document ID
19900031234
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Saxon, J. B. (Rockwell International Corp. Huntsville, AL, United States)
Jones, J. U. (Rockwell International Corp. Huntsville, AL, United States)
Anderson, F. E. (Rockwell International Corp. Space Transportation Systems Div., Huntsville, AL, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: International Conference on Finite Element Methods in Flow Problems