نتایج جستجو برای: an asymmetric porous medium

تعداد نتایج: 5871446  

Ravi Rajesh, Y. Rajasekhara Gowd

This paper deals with a theoretical investigation of heat and mass transfer with thermal radiation analysis on hydromagnetic peristaltic Prandtl fluid model with porous medium through an asymmetric tapered vertical channel under the influence of gravity field. Analytical results are found for the velocity, pressure gradient, pressure rise, frictional force, temperature and concentration. The in...

2012
A. Afsar Khan R. Ellahi K. Vafai

The peristaltic flow of a Jeffrey fluid with variable viscosity through a porous medium in an asymmetric channel is investigated. The channel asymmetric is produced by choosing the peristaltic wave train on thewall of different amplitude and phase. The governing nonlinear partial differential equations for the Jeffrey fluid model are derived in Cartesian coordinates system. Analytic solutions f...

2011
Yunfeng Shi

1. Introduction In this work, we utilized molecular dynamics simulations to investigate gas diffusion in realistic nanoporous carbon models. We will focused on how the structure of the porous medium affects the gas diffusion. The porous structural features of interests include topological defects, dangling bonds, size and connectivity of the pores. Through a mimetic virtual synthesis routine, p...

In present work forced convection flow in a channel partly filled with a porous media under asymmetric heat flux boundary condition has been investigated. The porous material is distributed on the one wall. Darcy–Brinkman and LTNE model have been assumed in order to solve momentum and energy equations, respectively. Fully developed conditions are considered in order to solve velocity and the te...

2011
A. Kavitha R. Hemadri Reddy S. Sreenadh R. Saravana

Peristaltic transport of a Williamson fluid in an asymmetric channel through porous medium is studied under long wavelength and low Reynolds number assumptions. The nonlinear governing equations of the peristaltic flow are solved using perturbation method. The solution for the stream function is obtained by neglecting inertia and curvature effects. The velocity distribution, the volume flow rat...

Journal: :international journal of automotive engineering 0
mohammadi jazayeri ziabasharhagh

porous media has interesting features in compared with free flame combustion due to the extended of the lean flammability limits and lower emissions. advanced new generation of internal combustion (ic) engines are expected to have far better emissions levels both gaseous and particulate matter, at the same time having far lower fuel consumption on a wide range of operating condition. these crit...

2015
M. Vidhya R. Vijayalakshmi A. Govindarajan

This paper deals with the effect of heat and mass transfer with chemical reaction on MHD oscillatory flow through porous medium in the presence of heat source/sink in an asymmetric channel. Based on some simplifying assumptions, the governing momentum, energy and diffusion equations are solved and the analytical solutions for fluid velocity, temperature distribution, mass concentration, skin fr...

Journal: :international journal of nanoscience and nanotechnology 2013
a. h. meghdadi isfahani m. m. heyhat

for better understanding the effect of nanofluid flow in a porous medium, a set of experiments were conducted on a horizontal glass micromodel for al2o3-water nanofluids. to characterize the flow of nanofluids the same experiment was done by pure water. the glass micromodel was constructed by a photolithography technique. the al2o3-water nanofluids were produced by a two-step method and no surf...

2011
C. Vasudev U. Rajeswara Rao M. V. Subba Reddy G. Prabhakara Rao

In this paper, we studied the effects of heat transfer and magnetic field on the peristaltic flow of a Jeffrey fluid through a porous medium in an asymmetric channel under the assumptions of long wavelength and low Reynolds number. Expressions for the velocity and pressure gradient are obtained analytically. The effects of Hartmann number, Darcy number, phase shift, Jeffrey fluid parameter and ...

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