Calculations of radiative heat transfer in an axisymmetric jet diffusion flame at elevated pressures using different gas radiation models

2017 ◽  
Vol 197 ◽  
pp. 12-25 ◽  
Author(s):  
Huaqiang Chu ◽  
Jean-Louis Consalvi ◽  
Mingyan Gu ◽  
Fengshan Liu
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Diffusion Flame ◽  
Radiative Heat ◽  
Axisymmetric Jet ◽  
Gas Radiation ◽  
Elevated Pressures

Effect of gas radiation on radiative heat transfer in urban street canyon model

2009 ◽  
Vol 38 (7) ◽  
pp. 464-474
Author(s):  
Noboru Yamada ◽  
Yutaka Hasegawa ◽  
Shigenao Maruyama
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Street Canyon ◽  
Radiative Heat ◽  
Urban Street Canyon ◽  
Urban Street ◽  
Gas Radiation

Computer Modeling of the Continuous Annealing Furnace

1992 ◽  
Vol 114 (4) ◽  
pp. 345-350 ◽  
Author(s):  
S. H. Jeong ◽  
M. Y. Ha
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Heat Transfer Analysis ◽  
Continuous Annealing ◽  
Transient Species ◽  
Annealing Furnace ◽  
Zone Method ◽  
Gas Radiation ◽  
Continuous Annealing Furnace

A computer program to calculate the strip temperature heated in the continuous annealing furnace was developed, using the zone method for radiative heat transfer analysis with the measured gas temperature in the furnace. Using the FE operator, the present study considered the effects of soot and transient species in addition to the H2O-CO2 gas mixture on the gas radiative heat transfer. The predicted strip temperature distribution for FE = 1.05 represented well the measured data. The maximum difference in the heat flux transfered to the strip from the combustion gas for FE = 1.0 (without soot and transient species gas radiation) and 1.05 (with soot and transient species gas radiation) was about 15 percent. The present study also investigated the effects of line speed and thickness variations on the strip temperature, establishing the bases for the on-line computer model.

Numerical Simulation of Jet Diffusion Flames With Radiative Heat Transfer Modeling

2005 ◽  
Author(s):  
Mario Baburic´ ◽  
Reinhard Tatschl ◽  
Neven Duic´
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Radiative Heat Transfer ◽  
Diffusion Flame ◽  
Radiative Heat ◽  
Diffusion Flames ◽  
Flamelet Model ◽  
Jet Flame ◽  
Combustion Modeling ◽  
Jet Diffusion Flames

Beside appropriate turbulence and combustion modeling, the problem of an accurate prediction of turbulent diffusion flames usually requires accurate radiative heat transfer predictions as well. In this paper it is shown that the inclusion of radiation modeling into the overall numerical simulation is important if accurate temperature profiles are needed. Two different jet diffusion flame configurations are simulated in this work — a diluted hydrogen jet flame (80% H2 and 20% He by volume) [1–4], and a piloted methane jet diffusion flame (flame D) [5, 6]. The predictions are compared to experimental data. Radiation is modeled by a conservative discrete transfer radiation method (DTRM) [7, 8]. Turbulence is modeled by a classical k-ε and by a hybrid procedure, as proposed in [9]. Combustion modeling is based on the stationary laminar flamelet model (SLFM) [10], where the combustion/turbulence interaction is accomplished via the presumed β probability density function (β-PDF).

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