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Entropy Generation Analysis in Turbulent Reacting Flows and Near Wall: A Review

Sadiki, Amsini ; Agrebi, Senda ; Ries, Florian (2022)
Entropy Generation Analysis in Turbulent Reacting Flows and Near Wall: A Review.
In: Entropy, 24 (8)
doi: 10.3390/e24081099
Artikel, Bibliographie

Dies ist die neueste Version dieses Eintrags.

Kurzbeschreibung (Abstract)

This paper provides a review of different contributions dedicated thus far to entropy generation analysis (EGA) in turbulent combustion systems. We account for various parametric studies that include wall boundedness, flow operating conditions, combustion regimes, fuels/alternative fuels and application geometries. Special attention is paid to experimental and numerical modeling works along with selected applications. First, the difficulties of performing comprehensive experiments that may support the understanding of entropy generation phenomena are outlined. Together with practical applications, the lumped approach to calculate the total entropy generation rate is presented. Apart from direct numerical simulation, numerical modeling approaches are described within the continuum formulation in the framework of non-equilibrium thermodynamics. Considering the entropy transport equations in both Reynolds-averaged Navier–Stokes and large eddy simulation modeling, different modeling degrees of the entropy production terms are presented and discussed. Finally, exemplary investigations and validation cases going from generic or/and canonical configurations to practical configurations, such as internal combustion engines, gas turbines and power plants, are reported. Thereby, the areas for future research in the development of EGA for enabling efficient combustion systems are highlighted. Since EGA is known as a promising tool for optimization of combustion systems, this aspect is highlighted in this work.

Typ des Eintrags: Artikel
Erschienen: 2022
Autor(en): Sadiki, Amsini ; Agrebi, Senda ; Ries, Florian
Art des Eintrags: Bibliographie
Titel: Entropy Generation Analysis in Turbulent Reacting Flows and Near Wall: A Review
Sprache: Englisch
Publikationsjahr: 2022
Ort: Darmstadt
Verlag: MDPI
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Entropy
Jahrgang/Volume einer Zeitschrift: 24
(Heft-)Nummer: 8
Kollation: 33 Seiten
DOI: 10.3390/e24081099
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Kurzbeschreibung (Abstract):

This paper provides a review of different contributions dedicated thus far to entropy generation analysis (EGA) in turbulent combustion systems. We account for various parametric studies that include wall boundedness, flow operating conditions, combustion regimes, fuels/alternative fuels and application geometries. Special attention is paid to experimental and numerical modeling works along with selected applications. First, the difficulties of performing comprehensive experiments that may support the understanding of entropy generation phenomena are outlined. Together with practical applications, the lumped approach to calculate the total entropy generation rate is presented. Apart from direct numerical simulation, numerical modeling approaches are described within the continuum formulation in the framework of non-equilibrium thermodynamics. Considering the entropy transport equations in both Reynolds-averaged Navier–Stokes and large eddy simulation modeling, different modeling degrees of the entropy production terms are presented and discussed. Finally, exemplary investigations and validation cases going from generic or/and canonical configurations to practical configurations, such as internal combustion engines, gas turbines and power plants, are reported. Thereby, the areas for future research in the development of EGA for enabling efficient combustion systems are highlighted. Since EGA is known as a promising tool for optimization of combustion systems, this aspect is highlighted in this work.

Freie Schlagworte: review, entropy generation, exergy, numerical modeling approaches, combustion systems, near wall, applications, optimization
Zusätzliche Informationen:

This article belongs to the Section Statistical Physics

Sachgruppe der Dewey Dezimalklassifikatin (DDC): 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau
Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Fachgebiet für Energie- und Kraftwerkstechnik (EKT)
16 Fachbereich Maschinenbau > Fachgebiet Reaktive Strömungen und Messtechnik (RSM)
Hinterlegungsdatum: 02 Aug 2024 12:43
Letzte Änderung: 02 Aug 2024 12:43
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