Mohebbi, Mahdi
(2007)
Large-eddy Simulation of NASA LaRC Coaxial He-O2/Air Jet.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
Large-eddy simulation (LES) is conducted of a coaxial jet flow configuration. This configuration was previously considered in the laboratory experiments at the Hypersonic Air-breathing Propulsion Branch at the NASA Langley Research Center (LaRC). It consists of a coaxial jet discharging into stagnant air with a main stream of He-O2 (95% helium and 5% oxygen by volume) and a coflow of air. The objective of this work is to investigate the performance of conventional LES models for supersonic flows. In the simulations, the filtered, compressible, 3-dimensional Nevier-Stokes equations for a multi-species system are solved. The subgrid scale closure is attained using the generalized Smagorinsky model and the dynamic model. The predicted results are assessed via comparison with data from the NASA LaRC.
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Details
Item Type: |
University of Pittsburgh ETD
|
Status: |
Unpublished |
Creators/Authors: |
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ETD Committee: |
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Date: |
25 September 2007 |
Date Type: |
Completion |
Defense Date: |
23 July 2007 |
Approval Date: |
25 September 2007 |
Submission Date: |
13 July 2007 |
Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
Institution: |
University of Pittsburgh |
Schools and Programs: |
Swanson School of Engineering > Mechanical Engineering |
Degree: |
MSME - Master of Science in Mechanical Engineering |
Thesis Type: |
Master's Thesis |
Refereed: |
Yes |
Uncontrolled Keywords: |
Compressible Flow; Numerical Simulation |
Other ID: |
http://etd.library.pitt.edu/ETD/available/etd-07132007-125640/, etd-07132007-125640 |
Date Deposited: |
10 Nov 2011 19:51 |
Last Modified: |
15 Nov 2016 13:45 |
URI: |
http://d-scholarship.pitt.edu/id/eprint/8355 |
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