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A Hybrid Discontinuous Galerkin-Monte Carlo Simulator for Filtered Density Function

Sammak, Shervin (2017) A Hybrid Discontinuous Galerkin-Monte Carlo Simulator for Filtered Density Function. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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A new computational scheme is developed for large eddy simulation (LES) of compressible turbulent reacting flows via the filtered density function (FDF) subgrid scale closure. This is a hybrid scheme, combining the discontinuous Galerkin (DG) Eulerian solver with a Lagrangian Monte Carlo FDF simulator. The methodology is shown to be suitable for LES, as a larger portion of the resolved energy is captured as the order of spectral approximation increases. Simulations are conducted of both incompressible and compressible flows. The consistency and the overall performance of the DG-MC solver, and the realizability of the simulated results are demonstrated via LES of a temporally developing mixing layer under both non reacting and reacting conditions. It is also shown that the scheme is capable of accurate simulation of shock dominated flows.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Sammak, Shervinshervin.sammak@pitt.eduSHS1590000-0003-0796-1886
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairGivi, Peymanpeg10@pitt.eduPEG10
Committee MemberBrigham, John
Committee MemberLayton, William
Committee MemberSmolinski,
Date: 1 February 2017
Date Type: Publication
Defense Date: 8 November 2016
Approval Date: 1 February 2017
Submission Date: 9 November 2016
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 50
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: Large eddy simulation; filtered density function; Monte Carlo methods; reacting flows; compressible turbulent flows.
Date Deposited: 01 Feb 2017 17:48
Last Modified: 31 Jul 2017 17:47


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