Numerical Simulation of Laminar Flow and Heat Transfer Over A Blunt Flat Plate in Square Channel  

Oleh:

Ota, Terukazu ; Yoshikawa, Hiroyuki ; Yanaoka, Hideki

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 124 no. 1 (Feb. 2002), page 8-16.
Topik: LAMINAR FLOW; numerical simulation; laminar flow; heat transfer; blunt flat plate; square channel

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.3 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Three - dimensional simulations of laminar separated and reattached flow and heat transfer over a blunt flat plate in a square channel are presented. Numerical calculations of Navier - Stokes equations and energy equation are carried out using the finite difference method. Results of three - dimensional calculation are compared with two - dimensional ones and effects of the side walls are described. It is clarified from the present results that the reattachment length increases with an increase of Reynolds number and the flow in the recirculation region becomes three - dimensional. The reattachment line is curved by the side wall effects. Two - dimensionality of the flow is reduced as Reynolds number increases. The horseshoe - vortex formed near the side walls has great effects upon the heat transfer in the redeveloping flow region. The separated shear layer around the center of plate becomes unstable with a further increase of Reynolds number and the vortices are periodically shed from the reattachment flow region. Such vortices exhibit a hairpin - like structure and greatly influence the heat transfer.

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