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ArtikelThe Effect of Uniform Blowing on The Flow Past A Circular Cylinder  
Oleh: Lallemand, Andre ; Mathelin, Lionel ; Bataille, Francoise
Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Fluids Engineering vol. 124 no. 2 (2002), page 452-464.
Topik: uniformization; uniform; blowing; flow past; circular cylinder
  • Perpustakaan Pusat (Semanggi)
    • Nomor Panggil: JJ89.3
    • Non-tandon: 1 (dapat dipinjam: 0)
    • Tandon: tidak ada
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Isi artikelThis work describes blowing through the whole surface of a porous circular cylinder for the control of the near wake dynamics and the thermal protection of the surface. The flow past the cylinder is numerically studied and the blowing is modeled. Comparisons with experimental data are used for validation. It is shown that the blowing tends to increase the boundary layer thickness, to promote its separation and to decrease the viscous drag induced. Similarly, the convective heat transfer is lowered, and in the case of a non isothermal blowing, the surface is very effectively protected from the hot free stream flow. The near wake is also affected. The vortex shedding frequency is shown to decrease when blowing occurs and a qualitative model is presented to identify the different mechanisms.
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