High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes) An International Journal

ISSN for PRINT: 1093-3611

For Online Access

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2005, Volume9

Issue 4

174 pages

DOI: 10.1615/HighTempMatProc.v9.i4

Issue price - $144.00

H. Sammouda
LETTM Laboratory, Department of Physics, Faculty of Sciences of Monastir, 5019 Monastir, Tunisia

C. Surry
IMP-CNRS Bp:5- 66120 Odeillo Font-Romeu, France

A. Belghith
LETTM Laboratory, Department of Physics, Faculty of Sciences of Tunis, El Manar 2092 Tunis, Tunisia

In this paper, a numerical and experimental analysis are presented on the complete interface problem between the convective and radiative phenomena established in the interior and the exterior of an open rotary-kiln partially filled with material medium considered to process at high temperature. The material media is compound of sintered solid particles and the hypothesis of well mixing is considered. A finite element and a fractional step time methods are used for discretization the equations respectively in space and in time. The numerical results are compared to results of experimental heating of innert sand in the rotary kiln placed in the focus of solar parabolic concentrator of 1000 kW. The results are presented in term of isotherm contour plots and velocity field of fluid and of solid particles, for different values of rotational speed of kiln and of mass flow rate of solid-particles. We have shown that at high temperature the incompressibility condition should be satisfied at the elementary level and that the natural and the forced convection are not negligible relatively to the radiative phenomenon.

DOI: 10.1615/HighTempMatProc.v9.i4.10 Download article, 483-507 pages

Article price - $35.00

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