Radiation effects on mixed turbulent natural and forced convection in a horizontal channel using direct numerical simulation

Abstract The purpose of this study is to clarify the radiation effects on mixed turbulent convection in a horizontal channel. The present study provides turbulence statistics using direct numerical simulation (DNS) in an optically thin medium. When the radiation effect is considered, the flow structure and the temperature distribution in the channel change with an increase in the optical thickness of the fluid. The radiation effect changes the distributions of the temperature fluctuation intensity and the turbulent heat flux. These radiation effects on mixed convection can be clearly explained by the turbulence statistics obtained from the DNS results.

[1]  Jay P. Gore,et al.  Spectral radiation properties of partially premixed turbulent flames , 2003 .

[2]  Jay P. Gore,et al.  Measurements and Calculations of Spectral Radiation Intensities for Turbulent Non-Premixed and Partially Premixed Flames , 2003 .

[3]  P. Coelho.  Numerical simulation of the interaction between turbulence and radiation in reactive flows , 2007 .

[4]  B. Premachandran,et al.  Conjugate mixed convection with surface radiation from a horizontal channel with protruding heat sources , 2006 .

[5]  N. Kasagi,et al.  Direct Numerical Simulation of Passive Scalar Field in a Turbulent Channel Flow , 1992 .

[6]  P. Moin,et al.  Numerical investigation of turbulent channel flow , 1981, Journal of Fluid Mechanics.

[7]  M. Modest,et al.  Application of composition PDF methods in the investigation of turbulence–radiation interactions , 2002 .

[8]  P. Moin,et al.  Application of a Fractional-Step Method to Incompressible Navier-Stokes Equations , 1984 .

[9]  Shigenao Maruyama,et al.  Radiative heat transfer in inhomogeneous, nongray, and anisotropically scattering media , 2000 .

[10]  L. Davidson,et al.  Large-eddy simulation of mixed convection-radiation heat transfer in a vertical channel , 2009 .

[11]  G. Colomer,et al.  Three-dimensional numerical simulation of convection and radiation in a differentially heated cavity using the discrete ordinates method , 2004 .

[12]  Daniel C. Haworth,et al.  Large-Eddy Simulation of Turbulence-Radiation Interactions in a Turbulent Planar Channel Flow , 2009 .

[13]  I. Malico,et al.  Radiation statistics in homogeneous isotropic turbulence , 2009 .

[14]  Hung-Yi Li,et al.  Radiation effects on mixed convection heat transfer in a vertical square duct , 2001 .

[15]  B. Farouk,et al.  Laminar and Turbulent Natural Convection-Radiation Interactions in a Square Enclosure Filled with a Nongray Gas , 1989 .

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

[17]  K. Matsubara,et al.  Heat Transfer Characteristics and Reynolds Stress Budgets in Single-Rib Mounting Channel , 2010 .

[18]  S. Patankar,et al.  Finite volume method for radiation heat transfer , 1994 .

[19]  T. Song,et al.  Inversion of combustion gas temperature/concentration profile with radiation/turbulence interaction using SRS , 2009 .

[20]  K. Velusamy,et al.  Conjugate turbulent natural convection with surface radiation in air filled rectangular enclosures , 2007 .

[21]  K. Matsubara,et al.  A study on spanwise heat transfer in a turbulent channel flow – eduction of coherent structures by a conditional sampling technique , 2001 .

[22]  A spatially advancing turbulent flow and heat transfer in a curved channel , 2009 .

[23]  R. Viskanta,et al.  Interaction of radiation with turbulence - application to a combustion system , 1987 .

[24]  Michael F. Modest,et al.  Importance of turbulence-radiation interactions in turbulent diffusion jet flames , 2003 .

[25]  Yuhui Wu,et al.  A high-order photon Monte Carlo method for radiative transfer in direct numerical simulation , 2007, J. Comput. Phys..

[26]  P. Moin,et al.  Turbulence statistics in fully developed channel flow at low Reynolds number , 1987, Journal of Fluid Mechanics.

[27]  J. Gore,et al.  Measurements and inverse calculations of spectral radiation intensities of a turbulent ethylene/air jet flame , 2005 .

[28]  Pedro J. Coelho,et al.  The influence of the non-resolved scales of thermal radiation in large eddy simulation of turbulent flows: A fundamental study , 2010 .

[29]  Yuhui Wu,et al.  Direct numerical simulation of turbulence/radiation interaction in premixed combustion systems , 2005 .

[30]  R. D. Jackson,et al.  Heat Transfer 1 , 1965 .

[31]  An Efficient Method for Radiative Heat Transfer Applied to a Turbulent Channel Flow , 2010 .

[32]  Pedro J. Coelho,et al.  Approximate solutions of the filtered radiative transfer equation in large eddy simulations of turbulent reactive flows , 2009 .

[33]  M. Roger,et al.  Analysis of the turbulence–radiation interactions for large eddy simulations of turbulent flows , 2009 .

[34]  S. Maruyama,et al.  Discrete Ordinates Radiation Element Method for Radiative Heat Transfer in Three-Dimensional Participating Media , 2007 .