Electronic Theses and Dissertations

Identifier

1100

Date

2014

Document Type

Dissertation

Degree Name

Doctor of Philosophy

Major

Engineering

Concentration

Mechanical Engineering

Committee Chair

Jeffrey G Marchetta

Committee Member

John Hochstein

Committee Member

Edward Lin

Committee Member

Firouzeh Sabri

Abstract

Recent studies focusing on predicting the self pressurization play a significant role in the design of cryogenic storage systems since tank pressure must be controlled for long duration space missions. Incident solar radiation heats the fluid in the tank over time vaporizing the cryogenic liquid. As the liquid vaporizes, the tank pressure increases. The objective of the current research is to develop a finite volume based Computational Fluid Dynamic (CFD) model of tank pressurization in reduced gravity using an Energy of Fluid (EOF) approach. The FLUENTpressure-based computational model is significantly enhanced to include the EOF method, which will solve the energy equation in terms of internal energy. The enhanced model will numerically predict the thermodynamic properties in each computational cell. The simulation results will provide temperature and pressure histories for a given tank geometry and fill. The objectives of the current study are to complete the model development and validate the model using existing experimental data for tank pressure.

Comments

Data is provided by the student.

Library Comment

Dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.

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