Interaction of radiation with turbulence: application to a combustion system.

Numerical prediction of airflow and heat-radiation interaction in a room with displacement ventilation

This paper deals with analysis of combined natural convection and volumetric radiation in a square enclosure containing an absorbing, emitting, and scattering medium using the lattice Boltzmann met...

Combined Radiation/Natural Convection in a Participating Medium Using Novel Lattice Boltzmann Method

This work discusses simulations using the detached eddy simulation based (DES) turbulence model to investigate turbulent channel flows Applicability of Strelets' (2001) version of the DES model was tested for a fully developed turbulent channel flow problem in a rectangular duct The unsteady Navier-Stokes equations were solved numerically at Reynolds number, Re τ , of 180, 590, and 2000, respectively, and compared to results obtained using direct numerical simulation (DNS) and previously published DES data Effects of grid density and advection scheme were investigated Overall, the model predicted the correct trends in the variation of turbulence quantities and compared reasonably well

Validation of DES-SST Based Turbulence Model for a Fully Developed Turbulent Channel Flow Problem

Line-by-line calculations of the absorption of infrared radiation by water vapor in a box-shaped enclosure filled with humid air

A three-dimensional numerical study was performed on interactions of natural convection and radiation in a cubical enclosure filled with carbon dioxide gas. The enclosure was heated differentially by two opposing vertical walls. Gas radiation was analyzed by the P1 differential approximation method and the weighted sum of gray gas model. Computations were carried out over a range of the Rayleigh number, Ra, between 105 and 109. The Prandtl number and the overheat ratio were held fixed at 0·68 and 1·0, respectively. Unsteady transitional flows were computed by a direct simulation method, without using any explicit turbulence models. From the predictions, a mean heat transfer correlation has been proposed as Nu = 0·323 Ra0·342 in the surface/gas radiation mode, where Nu is the time and spatially averaged Nusselt number at the isothermal walls.

K. Ishii

Papers

Natural convection-radiation interactions in a cube filled with a nongray gas