Large-eddy Simulation of NASA LaRC Coaxial He-O2/Air Jet

Mohebbi, Mahdi (2007) Large-eddy Simulation of NASA LaRC Coaxial He-O2/Air Jet. Master's Thesis, University of Pittsburgh. (Unpublished)

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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Status:	Unpublished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:	Creators Email Pitt Username ORCID Mohebbi, Mahdi mam175@pitt.edu MAM175
ETD Committee:	Title Member Email Address Pitt Username ORCID Committee Chair Givi, Peyman givi@engr.pitt.edu PEG10 Committee Member Schaefer, Laura laschaef@engr.pitt.edu LAS149 Committee Member Cho, Sung Kwon skc@engr.pitt.edu SKCHO
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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