Title :
Cubic-Interpolated-Pseudo-Particle lattice Boltzmann method for simulation of natural convection heat transfer in an enclosure with different aspect ratios
Author :
Mussa, M.A. ; Abdullah, S. ; Muhamad, N. ; Azwadi, C. S Nor
Author_Institution :
Dept. of Mech. & Mater. Eng., Nat. Univ. of Malaysia, Bangi, Malaysia
Abstract :
This paper presents the simulation of natural heat convection in an enclosure with different aspects ratio using the lattice Boltzmann method. D2Q9 lattice model was coupled with the simplest D2Q4 lattice model to represent density and internal energy distribution function respectively. The effects of the Rayleigh number on the flow pattern at aspect ratio of 0.25, 0.5, 1.5, and 4 were studied. The enclosure is filled with air heated by small localized source of heat at bottom wall. The results explain the mechanism of natural convection rate increasing due to the Rayleigh number and aspect ratio changing. The comparison of the results was in excellent agreement with results from the literature.
Keywords :
computational fluid dynamics; interpolation; lattice Boltzmann methods; natural convection; CFD; D2Q4 lattice model; Rayleigh number; computational fluid dynamics; cubic-interpolated-pseudo-particle lattice Boltzmann Method; flow pattern; internal energy distribution function; natural convection heat transfer; thermal flow; Computational fluid dynamics; Computational modeling; Distribution functions; Equations; Fluid dynamics; Fluid flow; Heat transfer; Lattice Boltzmann methods; Microscopy; Temperature distribution; Bhatnagar-Gross-Crook (BGK) collision model; CFD; distribution function; lattice Boltzmann; microscopic dynamic;
Conference_Titel :
Computer and Automation Engineering (ICCAE), 2010 The 2nd International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-5585-0
Electronic_ISBN :
978-1-4244-5586-7
DOI :
10.1109/ICCAE.2010.5451449
