Large Eddy Simulation of Constant Heat Flux Turbulent Channel Flow With Property Variations : Quast-Developed Model and Mean Flow Results  

Oleh:

Pletcher, Richard H. ; Dailey, Lyle D. ; Ning, Meng

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 125 no. 1 (Feb. 2003), page 27-38.
Topik: mean flow time; large eddy simulation; constant heat flux; turbulent channel flow; property variations; quasi - developed model; mean flow

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.6 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Turbulent planar channel flow has been computed for uniform wall heating and cooling fluxes strong enough to cause significant property variations using large eddy simulation. Channels with both walls either heated or cooled were considered, with wall - to - bulk temperature ratios as high as 1.5 for the heated case, and as low as 0.56 for the cooled case. An implicit, second order accurate finite volume scheme was used to solve the time dependent filtered set of equations to determine the large eddy motion, while a dynamic subgrid - scale model was used to account for the subgrid scale effects. Step - periodicity was used based on a quasi - developed assumption. The effects of strong heating and cooling on the flow were investigated and compared with the results obtained under low heating conditions.

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