Rao, Sanjeev K (2000) An Oseen-type model for swirling internal separated flows. Journal of Engineering Mathematics, 38 (2). pp. 119-140. ISSN 0022-0833
Full text not available from this repository.Abstract
The viscous, laminar, separated flow downstream of a sudden expansion in a pipe is studied. The flow is modeled by an Oseen-type equation, but with the additional feature that the nonlinearity in the swirl is retained. Exact solutions are obtained for a high-Reynolds-number limit and for arbitrary Reynolds number by use of an eigenfunction-expansion procedure, in the presence of swirl. This leads to a non-standard eigenvalue problem. When the swirl is sufficiently large, a central recirculating region is observed. The effect of the pressure gradients on the velocity profiles and the central recirculating eddy is discussed. The low-Reynolds-number solutions go over smoothly to the large Reynolds number solution as the Reynolds number increases. Good agreement is obtained with the numerically computed value of the reattachment length.
| Item Type: | Journal Article |
|---|---|
| Uncontrolled Keywords: | Eigenvalues and eigenfunctions;Flow separation;Laminar flow;Navier-Stokes equations;Pipe flow;Rotational flow;Swirling flow;Oseen-type model;Swirling internal separated flows;Viscous laminar separated flow;Downstream flow;Sudden expansion;Pipe;Oseen-type equation;Swirl nonlinearity |
| Subjects: | ENGINEERING > Fluid Mechanics and Thermodynamics |
| Division/Department: | Computational and Theoretical Fluid Dynamics Division |
| Depositing User: | MS Jayashree S |
| Date Deposited: | 26 Apr 2007 |
| Last Modified: | 24 May 2010 09:55 |
| URI: | http://nal-ir.nal.res.in/id/eprint/4166 |
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