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Flow visualization of internal waves and wakes of a streamlined body in a stratified fluid
, Article Journal of Applied Fluid Mechanics ; Volume 9, Issue 2 , 2016 , Pages 635-641 ; 17353572 (ISSN) ; Bidokhti, A. A ; Sharif University of Technology
Isfahan University of Technology
2016
Abstract
The wake and internal waves of a moving three dimensional (3D) airfoil body in a stratified fluid has been investigated in a large stratified tank with a finite depth using movies of shadowgraphs of the flow fields. Typical Reynolds and Froude numbers of the flow varied between 103 and 104, and 0.3 and 2 respectively. The flows are generated often by towing the body in a uniformly stratified flow, while limited cases are carried out with body stationary and the channel was in recirculating mode. For some experiments the density profile had a stepped like shape. The wake flow is often consisted of internal waves including random and coherent ones. Distortion of density fields was also...
Numerical investigation of oxygenated and deoxygenated blood flow through a tapered stenosed arteries in magnetic field
, Article PLSONE ; Volume 11, Issue 12 , 2016 ; 19326203 (ISSN) ; Akbari Bidokhti, A. A ; khak Rah, H ; Vaezi, S ; Hooshmand, P ; Sharif University of Technology
Public Library of Science
Abstract
Current paper is focused on transient modeling of blood flow through a tapered stenosed arteries surrounded a by solenoid under the presence of heat transfer. The oxygenated and deoxygenated blood are considered here by the Newtonian and Non-Newtonian fluid (power law and Carreau-Yasuda) models. The governing equations of bio magnetic fluid flow for an incompressible, laminar, homogeneous, non-Newtonian are solved by finite volume method with SIMPLE algorithm for structured grid. Both magnetization and electric current source terms are well thought-out in momentum and energy equations. The effects of fluid viscosity model, Hartmann number, and magnetic number on wall shear stress, shearing...