Application of an efficient exponential wide band model for the natural gas combustion simulation in a 300 kW BERL burner furnace

Abstract Methane is one of the most important radiation participating medium. However, the weighted-sum-of-gray-gas (WSGG) model which is widely used in the recent commercial computational fluid dynamics (CFD) software cannot address the contribution of methane to the effective absorption coefficient (EAC) when simulating the natural gas combustion. In this work, an efficient exponential wide band (E-EWB) model which accounts for the effects of many species including H2O, CO2, CO and CH4 on EAC is proposed and numerical simulations are carried out for the natural gas combustion in a 300 kW BERL (Burner Engineering Research Laboratory) burner. The results including the distributions of axial velocity, gas temperature and the O2 mass fraction in the furnace obtained by the simulations with both the WSGG model and the E-EWB model are then analyzed and validated against the experimental data. The calculation efficiencies of the two simulations with the WSGG and E-EWB models are also compared. It is found that simulation with the E-EWB model generates much better results, although its calculation speed is about 1.8 times slower than that of the simulation with the WSGG model.

[1]  G. Raithby,et al.  COMPUTATION OF RADIANT HEAT TRANSFER ON A NONORTHOGONAL MESH USING THE FINITE-VOLUME METHOD , 1993 .

[2]  Linbo Yan,et al.  Development of an absorption coefficient calculation method potential for combustion and gasification simulations , 2015 .

[3]  T. Shih,et al.  A New K-epsilon Eddy Viscosity Model for High Reynolds Number Turbulent Flows: Model Development and Validation , 1994 .

[4]  S. Kær,et al.  Chemistry and radiation in oxy-fuel combustion: A computational fluid dynamics modeling study , 2011 .

[5]  C. Yin Refined weighted sum of gray gases model for air-fuel combustion and its impacts , 2013 .

[6]  A. Amell,et al.  Performance study of an induced air porous radiant burner for household applications at high altitude , 2015 .

[7]  Mehmet Efe Biresselioglu,et al.  Investigating the natural gas supply security: A new perspective , 2015 .

[8]  Gautham Krishnamoorthy,et al.  A comparative evaluation of gray and non-gray radiation modeling strategies in oxy-coal combustion simulations , 2013 .

[9]  Roman Weber,et al.  Evaluation of emissivity correlations for H2OCO2N2/air mixtures and coupling with solution methods of the radiative transfer equation , 1996 .

[10]  M. Pinar Mengüç,et al.  Thermal Radiation Heat Transfer , 2020 .

[11]  T. Shih,et al.  A new k-ϵ eddy viscosity model for high reynolds number turbulent flows , 1995 .

[12]  Gautham Krishnamoorthy,et al.  Radiation modelling in oxy-fuel combustion scenarios , 2010 .

[13]  B. Launder,et al.  Lectures in mathematical models of turbulence , 1972 .

[14]  Sakiru Adebola Solarin,et al.  Natural Gas Consumption and Economic Growth: The Role of Foreign Direct Investment, Capital Formation and Trade Openness in Malaysia , 2015 .

[15]  M. Modest Radiative heat transfer , 1993 .

[16]  W. P. Jones,et al.  Global reaction schemes for hydrocarbon combustion , 1988 .

[17]  B. Magnussen On the structure of turbulence and a generalized eddy dissipation concept for chemical reaction in turbulent flow , 1981 .

[18]  Søren Knudsen Kær,et al.  New Weighted Sum of Gray Gases Model Applicable to Computational Fluid Dynamics (CFD) Modeling of Oxy−Fuel Combustion: Derivation, Validation, and Implementation , 2010 .

[19]  H. Krautz,et al.  Prediction of oxy-coal combustion through an optimized weighted sum of gray gases model , 2012 .

[20]  D. Edwards,et al.  Comparison of Models for Correlation of Total Band Absorption , 1964 .

[21]  C. Mason,et al.  Jump Processes in Natural Gas Markets , 2014, SSRN Electronic Journal.

[22]  A. Balakrishnan,et al.  Thermal radiation by combustion gases , 1973 .

[23]  P. Cheng Two-dimensional radiating gas flow by a moment method , 1964 .

[24]  B. Launder,et al.  Progress in the development of a Reynolds-stress turbulence closure , 1975, Journal of Fluid Mechanics.

[25]  T. F. Smith,et al.  Evaluation of Coefficients for the Weighted Sum of Gray Gases Model , 1982 .