Hydrodynamic drag force exerted on a highly porous sphere moving towards an impermeable plate

R. M. Wu; D. J. Lee

doi:10.1016/S0009-2509(98)00172-9

Hydrodynamic drag force exerted on a highly porous sphere moving towards an impermeable plate

R. M. Wu, D. J. Lee

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

39 Citations (Scopus)

Abstract

This study numerically evaluates the hydrodynamic drag force exerted on a porous sphere moving through a Newtonian fluid towards an impermeable flat plate at a Reynolds number ranging from 0.1 to 40. The sphere is assumed to be highly porous, whose interior flow field is modeled by the combined Darcy-Brinkman model. The surrounding fluid flow field is governed by steady-state Navier-Stokes equations. When the floc permeability is rather high, which is common for sludge flocs, no boundary layer separation occurs in the after-sphere region at large Reynolds numbers. The drag force thereby adheres to a Stokes' law like relationship.

Original language	English
Pages (from-to)	3571-3578
Journal	Chemical Engineering Science
Volume	53
Issue number	20
DOIs	https://doi.org/10.1016/S0009-2509(98)00172-9
Publication status	Published - Oct 1998
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Drag
Numerical
Plate
Porous

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title = "Hydrodynamic drag force exerted on a highly porous sphere moving towards an impermeable plate",

abstract = "This study numerically evaluates the hydrodynamic drag force exerted on a porous sphere moving through a Newtonian fluid towards an impermeable flat plate at a Reynolds number ranging from 0.1 to 40. The sphere is assumed to be highly porous, whose interior flow field is modeled by the combined Darcy-Brinkman model. The surrounding fluid flow field is governed by steady-state Navier-Stokes equations. When the floc permeability is rather high, which is common for sludge flocs, no boundary layer separation occurs in the after-sphere region at large Reynolds numbers. The drag force thereby adheres to a Stokes' law like relationship.",

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AU - Wu, R. M.

AU - Lee, D. J.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 1998/10

Y1 - 1998/10

N2 - This study numerically evaluates the hydrodynamic drag force exerted on a porous sphere moving through a Newtonian fluid towards an impermeable flat plate at a Reynolds number ranging from 0.1 to 40. The sphere is assumed to be highly porous, whose interior flow field is modeled by the combined Darcy-Brinkman model. The surrounding fluid flow field is governed by steady-state Navier-Stokes equations. When the floc permeability is rather high, which is common for sludge flocs, no boundary layer separation occurs in the after-sphere region at large Reynolds numbers. The drag force thereby adheres to a Stokes' law like relationship.

AB - This study numerically evaluates the hydrodynamic drag force exerted on a porous sphere moving through a Newtonian fluid towards an impermeable flat plate at a Reynolds number ranging from 0.1 to 40. The sphere is assumed to be highly porous, whose interior flow field is modeled by the combined Darcy-Brinkman model. The surrounding fluid flow field is governed by steady-state Navier-Stokes equations. When the floc permeability is rather high, which is common for sludge flocs, no boundary layer separation occurs in the after-sphere region at large Reynolds numbers. The drag force thereby adheres to a Stokes' law like relationship.

KW - Drag

KW - Numerical

KW - Plate

KW - Porous

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DO - 10.1016/S0009-2509(98)00172-9

M3 - RGC 21 - Publication in refereed journal

SN - 0009-2509

VL - 53

SP - 3571

EP - 3578

JO - Chemical Engineering Science

JF - Chemical Engineering Science

IS - 20

ER -

Hydrodynamic drag force exerted on a highly porous sphere moving towards an impermeable plate

Abstract

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Research Keywords

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