Direct Numerical Simulation of Turbulent Separated Flow and Heat Transfer Over A Blunt Flat Plate  

Oleh:

Ota, Terukazu ; Yoshikawa, Hiroyuki ; Yanaoka, Hideki

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 125 no. 5 (Oct. 2003), page 779-787.
Topik: PLATES (ENGINEERING); numerical simulation; turbulent separated flow; heat transfer; blunt flat plat

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.7 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Three - dimensional simulation of turbulent separated and reattached flow and heat transfer over a blunt flat plate is presented. The Reynolds number analyzed is 5000. The vortices shed from the reattachment flow region exhibit a hairpin - like structure. These large - scale vortex structures greatly influence the heat transfer in the reattachment region. Present results are compared with the previous three - dimensional calculations at low Reynolds number and it is found that there is no essential difference between two results with respect to the flow structure. The reattachment length is about five plate thicknesses, which is nearly equal to the previous experimental ones. The velocity distributions and turbulence intensities are in good agreement with the experimental data. Further, it is clarified that Nusselt number and temperature distributions greatly depend upon the Reynolds number, though their characteristic behaviours are qualitatively well simulated.

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