Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Heat Transfer Research
Импакт фактор: 0.404 5-летний Импакт фактор: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

Выпуски:
Том 50, 2019 Том 49, 2018 Том 48, 2017 Том 47, 2016 Том 46, 2015 Том 45, 2014 Том 44, 2013 Том 43, 2012 Том 42, 2011 Том 41, 2010 Том 40, 2009 Том 39, 2008 Том 38, 2007 Том 37, 2006 Том 36, 2005 Том 35, 2004 Том 34, 2003 Том 33, 2002 Том 32, 2001 Том 31, 2000 Том 30, 1999 Том 29, 1998 Том 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2016014017
pages 865-884

EVAPORATION HEAT LOSS IN THE FLAMELET MODEL FOR DILUTE SPRAY FLAMES

Jing Chen
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, P.R. China
Minming Zhu
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, P.R. China
Minghou Liu
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, P.R. China
Yiliang Chen
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, P.R. China

Краткое описание

The motivation of this paper is to extend the flamelet/progress variables (FPV) approach used successfully in gaseous flames to spray combustion. To consider the evaporation heat loss effect in the FPV approach, two new methods are proposed. One is to correct the gaseous temperature in the flamelet calculation, and the other is to couple this heat loss into the CFD process. To evaluate their performance, the piloted ethanol-air spray flames are simulated by LES in the Eulerian-Lagrangian framework. The simulation results using these two methods and some other existing models are compared with experimental data. It is shown that both methods give lower gaseous temperature compared to the conventional FPV approach and the mean gaseous temperature is closer to the experimental data especially downstream and near the centerline. As to other statistical results (e.g., the mean velocities and rms velocities and SMD), these methods show similar profiles which are all in good agreement with experimental data. The conclusion is that our models can give a good account of the evaporation heat loss. Meanwhile, much lower computational costs are needed compared to the method of solving the enthalpy equation.


Articles with similar content:

EULER/LAGRANGE CALCULATIONS OF TURBULENT SPRAYS: THE EFFECT OF DROPLET COLLISIONS AND COALESCENCE
Atomization and Sprays, Vol.10, 2000, issue 1
S. Hohmann, M. Ruger, Martin Sommerfeld, Gangolf Kohnen
COMPARISON OF GLOBAL NON-GRAY GAS MODELS FOR RADIATION IN PARTICIPATING MEDIUM
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Thirumalachari Sundararajan, Shashikant Cholake, S.P. Venkateshan
THE NUMERICAL AND EXPERIMENTAL STUDY OF A REGENERATIVE FURNACE
International Heat Transfer Conference 11, Vol.21, 1998, issue
Yoshimichi Hino , Toshio Ishii, Shunichi Sugiyama , Chao Zhang
JOINT SCALAR VS. JOINT VELOCITY-SCALAR PDF MODELLING OF BLUFF-BODY STABILISED FLAMES WITH REDIM
TSFP DIGITAL LIBRARY ONLINE, Vol.5, 2007, issue
Bart Merci, Ulrich Maas, Bertrand Naud, Dirk J.E.M. Roekaerts
PREDICTION OF AIRFLOW AND TEMPERATURE FIELD IN AN ICE RINK WITH RADIANT HEAT SOURCES
ICHMT DIGITAL LIBRARY ONLINE, Vol.13, 2008, issue
Nicolas Galanis, Mohamed Omri