Creeping Flow Through An Axisymmetric Sudden Contraction or Expansion  

Oleh:

Jing, Xudong ; Zimmerman, Robert W. ; Pain, Chris C. ; Sisavath, Sourith

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Fluids Engineering vol. 124 no. 1 (2002), page 273-278.
Topik: EXPANSION; flow; axisymmetric; contraction; expansion

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ89.4 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Creeping flow through a sudden contraction / expansion in an axisymmetric pipe is studied. Sampson's solution for flow through a circular orifice in an infinite wall is used to derive an approximation for the excess pressure drop due to a sudden contraction / expansion in a pipe with a finite expansion ratio. The accuracy of this approximation obtained is verified by comparing its results to finite - element simulations and other previous numerical studies. The result can also be extended to a thin annular obstacle in a circular pipe. The "equivalent length" corresponding to the excess pressure drop is found to be barely half the radius of the smaller tube.

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