scholarly journals On the influence of wall properties in the peristaltic motion of micropolar fluid

2003 ◽  
Vol 45 (2) ◽  
pp. 245-260 ◽  
Author(s):  
P. Muthu ◽  
B. V. Rathish Kumar ◽  
Peeyush Chandra
Keyword(s):  
Micropolar Fluid ◽  
Perturbation Technique ◽  
Flow Characteristics ◽  
Two Dimensional ◽  
Peristaltic Motion ◽  
Mean Flow ◽  
Wall Properties ◽  
Incompressible Micropolar Fluid ◽  
Deformable Boundaries ◽  
Fluid Parameters

AbstractWe carry out a study of the peristaltic motion of an incompressible micropolar fluid in a two-dimensional channel. The effects of viscoelastic wall properties and micropolar fluid parameters on the flow are investigated using the equations of the fluid as well as of the deformable boundaries. A perturbation technique is used to determine flow characteristics. The velocity profile is presented and discussed briefly. We find the critical values of the parameters involving wall characteristics, which cause mean flow reversal.

scholarly journals The Wall Properties Effect on Peristaltic Transport of Micropolar Non-Newtonian Fluid with Heat and Mass Transfer

2010 ◽  
Vol 2010 ◽  
pp. 1-40 ◽  
Author(s):  
N. T. Eldabe ◽  
M. Y. Abou-Zeid
Keyword(s):  
Mass Transfer ◽  
Angular Momentum ◽  
Heat And Mass Transfer ◽  
Stream Function ◽  
Newtonian Fluid ◽  
Micropolar Fluid ◽  
Two Dimensional ◽  
Wall Properties ◽  
Deformable Boundaries ◽  
Fluid Parameters

The problem of the unsteady peristaltic mechanism with heat and mass transfer of an incompressible micropolar non-Newtonian fluid in a two-dimensional channel. The flow includes the viscoelastic wall properties and micropolar fluid parameters using the equations of the fluid as well as of the deformable boundaries. A perturbation solution is obtained, which satisfies the momentum, angular momentum, energy, and concentration equations for case of free pumping (original stationary fluid). Numerical results for the stream function, temperature, and concentration distributions are obtained. Several graphs of physical interest are displayed and discussed.

A STUDY OF MICROPOLAR FLUID IN AN ANNULAR TUBE WITH APPLICATION TO BLOOD FLOW

2008 ◽  
Vol 08 (04) ◽  
pp. 561-576 ◽  
Author(s):  
P. MUTHU ◽  
B. V. RATHISH KUMAR ◽  
PEEYUSH CHANDRA
Keyword(s):  
Cross Section ◽  
Micropolar Fluid ◽  
Oscillatory Flow ◽  
Flow Characteristics ◽  
Annular Region ◽  
Mean Flow ◽  
Governing Equations ◽  
Tube Radius ◽  
Annular Tube ◽  
Fluid Parameters

The oscillatory flow of micropolar fluid in an annular region with constriction, provided by variation of the outer tube radius, is investigated. It is assumed that the local constriction varies slowly over the cross-section of the annular region. The nonlinear governing equations of the flow are solved using a perturbation method to determine the flow characteristics. The effect of micropolar fluid parameters on mean flow and pressure variables is presented.

Incipient breaking of steady waves in the presence of surface wakes

1999 ◽  
Vol 383 ◽  
pp. 285-305 ◽  
Author(s):  
MATTHEW MILLER ◽  
TOBIAS NENNSTIEL ◽  
JAMES H. DUNCAN ◽  
ATHANASSIOS A. DIMAS ◽  
STEPHAN PRÖSTLER
Keyword(s):  
Free Surface ◽  
Wave Height ◽  
Flow Characteristics ◽  
Breaking Wave ◽  
Maximum Height ◽  
Two Dimensional ◽  
Mean Flow ◽  
Experimental Findings ◽  
Drift Layer ◽  
Surface Drift

The effect of free-surface drift layers on the maximum height that a steady wave can attain without breaking is explored through experiments and numerical simulations. In the experiments, the waves are generated by towing a two-dimensional fully submerged hydrofoil at constant depth, speed and angle of attack. The drift layer is generated by towing a plastic sheet on the water surface ahead of the hydrofoil. It is found that the presence of this drift layer (free-surface wake) dramatically reduces the maximum non-breaking wave height and that this wave height correlates well with the surface drift velocity. In the simulations, the inviscid two-dimensional fully nonlinear Euler equations are solved numerically. Initially symmetric wave profiles are superimposed on a parallel drift layer whose mean flow characteristics match those in the experiments. It is found that for large enough initial wave amplitudes a bulge forms at the crest on the forward face of the wave and the vorticity fluctuations just under the surface in this region grow dramatically in time. This behaviour is taken as a criterion to indicate impending wave breaking. The maximum non-breaking wave elevations obtained in this way are in good agreement with the experimental findings.

scholarly journals Mean flow characteristics of two-dimensional wings in ground effect

2012 ◽  
Vol 4 (2) ◽  
pp. 151-161 ◽  
Author(s):  
Jae-Hwan Jung ◽  
Hyun-Sik Yoon ◽  
Ho-Hwan Chun ◽  
Pham Anh Hung ◽  
Osama Ahmed Elsamni
Keyword(s):  
Flow Characteristics ◽  
Ground Effect ◽  
Two Dimensional ◽  
Mean Flow

scholarly journals Mean flow characteristics of two-dimensional wings in ground effect

2012 ◽  
Vol 4 (2) ◽  
pp. 151-161 ◽  
Author(s):  
Jae Hwan Jung ◽  
Hyun Sik Yoon ◽  
Ho Hwan Chun ◽  
Pham Anh Hung ◽  
Osama Ahmed Elsamni
Keyword(s):  
Flow Characteristics ◽  
Ground Effect ◽  
Two Dimensional ◽  
Mean Flow

scholarly journals MHD Flow of the Micropolar Fluid between Eccentrically Rotating Disks

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Neetu Srivastava
Keyword(s):  
Differential Equations ◽  
Ordinary Differential Equations ◽  
Micropolar Fluid ◽  
Flow Characteristic ◽  
Flow Characteristics ◽  
Mhd Flow ◽  
Analytical Investigation ◽  
Strong Interactions ◽  
Rotating Disks ◽  
Incompressible Micropolar Fluid

This analytical investigation examines the magnetohydrodynamic flow problem of an incompressible micropolar fluid between the two eccentrically placed disks. Employing suitable transformations, the flow governing partial differential equations is reduced to ordinary differential equations. An exact solution representing the different flow characteristic of micropolar fluid has been derived by solving the ordinary differential equations. Analysis of the flow characteristics of the micropolar fluid has been done graphically by varying the Reynolds number and the Hartmann number. This analysis has been carried out for the weak and strong interactions.

Sign in / Sign up

Export Citation Format

Share Document