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Analysis of radiation–natural convection in a divided enclosure using the lattice Boltzmann method

✍ Scribed by Ahmed Mezrhab; Mohammed Jami; M’hamed Bouzidi; Pierre Lallemand

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
422 KB
Volume
36
Category
Article
ISSN
0045-7930

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✦ Synopsis

A numerical hybrid lattice-Boltzmann equation finite-difference is used to study the radiation-natural convection phenomena in a square cavity, differentially heated, with partition of finite thickness and varying height located vertically at the center of the cavity. The results obtained show that the radiation exchange produces a rise in the heat transfer. The average Nusselt number and the throughflow strength increase when the gap width (w), maximal difference temperature (DT) and cavity width (L) get larger. Effects of different parameters on streamlines, temperature fields, average Nusselt number and throughflow strength are discussed.

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✍ A. Haghshenas; M. Rafati Nasr; M.H. Rahimian 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 959 KB

In the present work, natural convection in an open-ended square cavity packed with porous medium is simulated. The double-population approach is used to simulate hydrodynamic and thermal fields, and the Taylor series expansion and the least-squares-based lattice Boltzmann method has been implemented