TU Darmstadt / ULB / TUbiblio

Time-dependent magnetohydrodynamic flow induced by non-coaxial rotations of an oscillating porous plate and a third-order fluid

Wang, Yongqi and Wu, Wei :
Time-dependent magnetohydrodynamic flow induced by non-coaxial rotations of an oscillating porous plate and a third-order fluid.
[Online-Edition: http://www.sciencedirect.com/science/article/pii/S0895717707...]
In: Mathematical and Computer Modelling, 46 (9-10) pp. 1277-1293. ISSN 0895-7177
[Article] , (2007)

Official URL: http://www.sciencedirect.com/science/article/pii/S0895717707...

Abstract

Time-dependent flow, induced by the rotation of a fluid in an infinitely extending space and a suddenly inserted non-coaxially rotating infinite plate, is investigated. The plate is porous, allows suction or blowing through it, and simultaneously oscillates non-torsionally in its own plane. The fluid is considered as an electrically conducting third-order non-Newtonian fluid. A magnetic field perpendicular to the plate is exerted to the fluid. To solve the emerging high-order two-dimensional initial-boundary value problem, a coordinate transformation is employed to transform the infinite physical space to a finite computational domain and a suitable finite difference method is used for numerical simulation. The time series of the flow velocity, the structure of the boundary layer near the plate, the influences of the exerted magnetic field, the suction/blowing velocity through the plate and a slip boundary condition at the plate on the flow are graphically presented and discussed. The nature of the shear stress engendered due to the flow is also investigated. In particular, numerical results for the third-order fluid are compared with those of a corresponding Newtonian fluid.

Item Type: Article
Erschienen: 2007
Creators: Wang, Yongqi and Wu, Wei
Title: Time-dependent magnetohydrodynamic flow induced by non-coaxial rotations of an oscillating porous plate and a third-order fluid
Language: English
Abstract:

Time-dependent flow, induced by the rotation of a fluid in an infinitely extending space and a suddenly inserted non-coaxially rotating infinite plate, is investigated. The plate is porous, allows suction or blowing through it, and simultaneously oscillates non-torsionally in its own plane. The fluid is considered as an electrically conducting third-order non-Newtonian fluid. A magnetic field perpendicular to the plate is exerted to the fluid. To solve the emerging high-order two-dimensional initial-boundary value problem, a coordinate transformation is employed to transform the infinite physical space to a finite computational domain and a suitable finite difference method is used for numerical simulation. The time series of the flow velocity, the structure of the boundary layer near the plate, the influences of the exerted magnetic field, the suction/blowing velocity through the plate and a slip boundary condition at the plate on the flow are graphically presented and discussed. The nature of the shear stress engendered due to the flow is also investigated. In particular, numerical results for the third-order fluid are compared with those of a corresponding Newtonian fluid.

Journal or Publication Title: Mathematical and Computer Modelling
Volume: 46
Number: 9-10
Publisher: Elsevier Science
Uncontrolled Keywords: Non-Newtonian fluid; Viscoelastic fluid; Flow modelling; Oscillating flow
Divisions: 16 Department of Mechanical Engineering > Fluid Dynamics (fdy)
16 Department of Mechanical Engineering
Date Deposited: 24 Aug 2011 18:00
Official URL: http://www.sciencedirect.com/science/article/pii/S0895717707...
Additional Information:

doi:10.1016/j.mcm.2007.01.005

Export:

Optionen (nur für Redakteure)

View Item View Item