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An implicit, density-based algorithm for coupled simulations of arbitrary gas mixtures

di Mare, Francesca and di Mare, Luca (2015) An implicit, density-based algorithm for coupled simulations of arbitrary gas mixtures. SIAM NC15, International Conference on Numerical Combustion, 19.-22. April 2015, Avignon, Frankreich.

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Abstract

The development of new design concepts for cleaner and efficient propulsion and energy transformation devices (gas turbines, combined gas-steam generation groups) requires the global optimization of all machine components. In the present work a novel numerical approach is illustrated, which allows to model accurately and efficiently departures from an ideal behaviour of the working fluid in density-based solvers. The concept of residual internal energy permits a ready extension of classic flux-difference splitting or flux-splitting solution algorithms to (reacting) mixtures of thermally and calorically imperfect gases of variable composition. A fully implicit formulation is then derived in terms of mass fractions.

Item URL in elib:https://elib.dlr.de/102101/
Document Type:Conference or Workshop Item (Speech)
Title:An implicit, density-based algorithm for coupled simulations of arbitrary gas mixtures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
di Mare, FrancescaDLR, Institute of Propulsion TechnologyUNSPECIFIED
di Mare, LucaImperial College London, Dept. of Mechanical EngineeringUNSPECIFIED
Date:19 April 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Roe solver, Flux-difference splitting, implicit, real gas, combustion
Event Title:SIAM NC15, International Conference on Numerical Combustion
Event Location:Avignon, Frankreich
Event Type:international Conference
Event Dates:19.-22. April 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Numerical Methodes
Deposited By: Mare, Francesca
Deposited On:19 Jan 2016 12:54
Last Modified:10 May 2016 23:42

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