Please use this identifier to cite or link to this item:
|Title:||A numerical technique for laminar swirling flow at the interface between porous and homogenous fluid domains|
|Authors:||Yu, P. |
|Citation:||Yu, P., Lee, T.S., Zeng, Y., Meguid, S.A., Low, H.T. (2009-05-30). A numerical technique for laminar swirling flow at the interface between porous and homogenous fluid domains. International Journal for Numerical Methods in Fluids 60 (3) : 337-353. ScholarBank@NUS Repository. https://doi.org/10.1002/fld.1899|
|Abstract:||There have been a few recent numerical implementations of the stress-jump condition at the interface of conjugate flows, which couple the governing equations for flows in the porous and homogenous fluid domains. These previous demonstration cases were for two-dimensional, planar flows with simple geometries, for example, flow over a porous layer or flow through a porous plug. The present study implements the interfacial stress-jump condition for a non-planar flow with three velocity components, which is more realistic in terms of practical flow applications. The steady, laminar, Newtonian flow in a stirred micro-bioreactor with a porous scaffold inside was investigated. It is shown how to implement the interfacial jump condition on the radial, axial, and swirling velocity components. To avoid a full threedimensional simulation, the flow is assumed to be independent of the azimuthal direction, which makes it an axisymmetric flow with a swirling velocity. The present interface treatment is suitable for non-flat surfaces, which is achieved by applying the finite volume method based on body-fitted and multi-block grids. The numerical simulations show that a vortex breakdown bubble, attached to the free surface, occurs above a certain Reynolds number. The presence of the porous scaffold delays the onset of vortex breakdown and confines it to a region above the scaffold. Copyright © 2008 John Wiley & Sons, Ltd.|
|Source Title:||International Journal for Numerical Methods in Fluids|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 24, 2018
WEB OF SCIENCETM
checked on Sep 24, 2018
checked on Sep 14, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.