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Poster (Scientific congresses and symposiums)
Large Eddy Simulation of a Non-Reactive Flow in a Typical Micro Gas Turbine
Pappa, Alessio; Cordier, Marie; Bricteux, Laurent et al.
2018ASME Turbo Expo 2018: Turbomachinery Technical Conference & Exposition
Peer reviewed
 

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Abstract :
[en] A PNJL model is built, in which the Polyakov-loop potential is explicitly Z$_{N_c}$-symmetric in order to mimic a Yang-Mills theory with gauge group SU($N_c$). The physically expected large-$N_c$ and large-$T$ behaviours of the thermodynamic observables computed from the Polyakov-loop potential are used to constrain its free parameters. The effective potential is eventually U(1)-symmetric when $N_c$ is infinite. Light quark flavours are added by using a Nambu-Jona-Lasinio (NJL) model coupled to the Polyakov loop (the PNJL model), and the different phases of the resulting PNJL model are discussed in 't Hooft's large-$N_c$ limit. Three phases are found, in agreement with previous large-$N_c$ studies. When the temperature $T$ is larger than some deconfinement temperature $T_d$, the system is in a deconfined, chirally symmetric, phase for any quark chemical potential $\mu$. When $T<T_d$ however, the system is in a confined phase in which chiral symmetry is either broken or not. The critical line $T_\chi(\mu)$, signalling the restoration of chiral symmetry, has the same qualitative features than what can be obtained within a standard $N_c=3$ PNJL model.
Disciplines :
Computer science
Mechanical engineering
Physics
Author, co-author :
Pappa, Alessio  ;  Université de Mons > Faculté Polytechnique > Thermique et Combustion
Cordier, Marie ;  Université de Mons > Faculté Polytechnique > Service de Thermique et Combustion
Bricteux, Laurent  ;  Université de Mons > Faculté Polytechnique > Service des Fluides-Machines
Bénard, Pierre
De Paepe, Ward  ;  Université de Mons > Faculté Polytechnique > Thermique et Combustion
Language :
English
Title :
Large Eddy Simulation of a Non-Reactive Flow in a Typical Micro Gas Turbine
Publication date :
11 June 2018
Number of pages :
1
Event name :
ASME Turbo Expo 2018: Turbomachinery Technical Conference & Exposition
Event organizer :
ASME International Gas Turbine Institute
Event place :
Lillestrøm (Oslo), Norway
Event date :
2018
Event number :
GT2018
Audience :
International
Peer reviewed :
Peer reviewed
Research unit :
F704 - Thermique et Combustion
Research institute :
R200 - Institut de Recherche en Energie
Commentary :
To appear in Phys Rev D
Available on ORBi UMONS :
since 17 May 2018

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