Tyck till om SwePub Sök här!
onr:"swepub:oai:lup.lub.lu.se:79f6ab81-6532-4bbd-9b8c-6b4407e1c975"
Sökning: onr:"swepub:oai:lup.lub.lu.se:79f6ab81-6532-4bbd-9b8c-6b4407e1c975" > Challenging modelin...
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
Challenging modeling strategies for LES of non-adiabatic turbulent stratified combustion
-
- Fiorina, B. (författare)
- CNRS, Laboratoire EM2C, CentraleSupelec, France
-
- Mercier, R. (författare)
- CNRS, Laboratoire EM2C, CentraleSupelec, France
-
- Kuenne, G. (författare)
- TU Darmstadt, Institute of Energy and Power Plant Technology, Germany. TU Darmstadt, Darmstadt Graduate School of Energy Science and Engineering, Germany
- visa fler...
- Dreizler, A. (författare)
- Kempf, A. (författare)
- visa färre...
- CNRS, Laboratoire EM2C, CentraleSupelec, France TU Darmstadt, Institute of Energy and Power Plant Technology, Germany TU Darmstadt, Darmstadt Graduate School of Energy Science and Engineering, Germany (creator_code:org_t)
- Elsevier BV, 2015
- 2015
- Engelska.
- Ingår i: Combustion and Flame. - : Elsevier BV. - 0010-2180 .- 1556-2921. ; 162:11, s. 4264-4282
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Five different low-Mach large eddy simulations are compared to the turbulent stratified flame experiments conducted at the Technical University of Darmstadt (TUD). The simulations were contributed by TUD, the Institute for Combustion Technology (ITV) at Aachen, Lund University (LUND), the EM2C laboratory at Ecole Centrale Paris, and the University of Duisburg-Essen (UDE). Combustion is modeled by a premixed flamelet tabulation with local flame thickening (TUD), a premixed flamelet progress variable approach coupled to a level set method (ITV), a 4-steps mechanism combined with implicit LES (LUND), the F-TACLES model that is based on filtered premixed flamelet tabulation (EM2C), and a flame surface density approach (UDE). An extensive comparison of simulation and experimental data is presented for the first two moments of velocity, temperature, mixture fraction, and major species mass fractions. The importance of heat-losses was assessed by comparing simulations for adiabatic and isothermal boundary conditions at the burner walls. The adiabatic computations predict a flame anchored on the burner lip, while the non-adiabatic simulations show a flame lift-off of one half pilot diameter and a better agreement with experimental evidence for temperature and species concentrations. Most simulations agree on the mean flame brush position, but it is evident that subgrid turbulence must be considered to achieve the correct turbulent flame speed. Qualitative comparisons of instantaneous snapshots of the flame show differences in the size of the resolved flame wrinkling patterns. These differences are (a) caused by the influence of the LES combustion model on the flame dynamics and (b) by the different simulation strategies in terms of grid, inlet condition and numerics. The simulations were conducted with approaches optimized for different objectives, for example low computational cost, or in another case, short turn around. (C) 2015 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Nyckelord
- Model comparison
- Non-adiabatic
- Heat losses
- chemistry
- Tabulated
- Turbulent stratified combustion
- Large Eddy Simulation
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
Hitta mer i SwePub
- Av författaren/redakt...
- Fiorina, B.
- Mercier, R.
- Kuenne, G.
- Ketelheun, A.
- Avdic, A.
- Janicka, J.
- visa fler...
- Geyer, D.
- Dreizler, A.
- Alenius, Emma
- Duwig, Christoph ...
- Trisjono, P.
- Kleinheinz, K.
- Kang, S.
- Pitsch, H.
- Proch, F.
- Marincola, F. Ca ...
- Kempf, A.
- visa färre...
- Om ämnet
-
- TEKNIK OCH TEKNOLOGIER
- TEKNIK OCH TEKNO ...
- och Maskinteknik
- och Strömningsmekani ...
- Artiklar i publikationen
- Combustion and F ...
- Av lärosätet
- Lunds universitet
- Kungliga Tekniska Högskolan
Sök utanför SwePub
- Sök vidare i:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - Nationella bibliotekssystem
- LIBRIS.kb.se
