http://www.iiste.org/Journals/index.php/CPER/issue/feedChemical and Process Engineering Research2016-08-30T15:58:05+00:00Alexander Deckeradmin@iiste.orgOpen Journal Systems<p><span id="internal-source-marker_0.04939836589619517">Chemical and Process Engineering Research <span id="internal-source-marker_0.04939836589619517">is a peer reviewed journal published by IISTE. The journal publishes original papers at the forefront of chemical engineering, process management and instrumentations. The journal is published in both printed and online versions. The online version is free access and download.</span></span></p><p><span>IISTE is member of <a href="http://www.crossref.org/01company/17crossref_members.html">CrossRef</a>. </span></p>http://www.iiste.org/Journals/index.php/CPER/article/view/32344Groundwater Flows in the Vicinity of Two Well Systems with Finite Element Method using FEniCs Software2016-08-30T15:58:05+00:00Dejene Gizaw Kidaned@d.com<p>Groundwater is available in usable quantities only in aquifers. An aquifer is a geological formation which contains water and permits significant amounts of water to move through it under ordinary field conditions. Aquifer can be categorized depending on the hydraulic conductivity as: isotropic vs. anisotropic, homogeneous vs. nonhomogeneous, etc. In this paper effort is made to see the flow of ground water in aquifer in the vicinity of two well systems, pumping and recharging wells, in some rectangular shaped domain in two dimensions where the pumping well is located at point while the recharging well is located at point No flow condition is assumed on the boundaries of the domain, while Dirichlet boundary condition is imposed on the boundary of the pumping well and inhomogeneous normal Neumann boundary condition is imposed on the boundary of the recharging well. Numerical experiment is made at both homogeneous and inhomogeneous isotropic aquifer cases. And in each of the aquifer cases, stationary and non-stationary cases are also considered. Finite Element Method is used for the purpose of analysis, where finite element mesh is generated using an external free 3D finite element mesh generator called <strong>Gmsh</strong>. Numerical experiment is performed using free software package called <strong>FEniCs</strong>. Based on the results of the numerical experiment all the cases exhibit the same phenomena. Meaning that, the draw-down in the water level is higher near the pumping well and decrease radially outward creating a feature called the cone of depression. This happens because of a pattern of radially converging flow to the well from the surrounding aquifer which causes the lowering of the water level (the piezometric surface) extending outward from the well. And the build-up in the water level is higher near the recharging well but decrease radially inward creating a feature called the cone of impression. This happens due to a pattern of radially diverging flow from the recharging well made to produce a buildup in the water level (or the piezometric surface). <strong></strong></p> <p><strong>Key</strong><strong>w</strong><strong>ords</strong>: Finite Element Methods, Groundwater, Well, FEniCs, Gmsh</p>http://www.iiste.org/Journals/index.php/CPER/article/view/32345Radiation and Mass Transfer Effects on MHD Viscous Flow Past an Impulsively Started Vertical Plate through a Porous Medium2016-08-30T15:58:05+00:00G Siva Kumard@d.com<p>In this paper we have analyzed the effects of Radiation and mass transfer on MHD viscous flow. The flow is assumed to be past an impulsively vertical plate in porous medium. The governing equations of the flow are solved numerically using finite difference scheme. Finally the influence of various physical parameters involved in the equations of velocity, temperature and concentration are discussed through graphs. More over through this numerical study, we observed that velocity as well as temperature profiles decreases with an increase in Radiation parameter. Increase in Magnetic and permeability parameters decreases and increases the velocity respectively.</p> <p><strong>Keywords:</strong> MHD, Radiation, Viscous dissipation, Vertical plate, Finite difference scheme.</p>http://www.iiste.org/Journals/index.php/CPER/article/view/32346Mixed Convective Heat Transfer Flow of a Nanofluid through a Porous Meduim in a Rectangular Cavity2016-08-30T15:58:05+00:00D.R.V. Prasada Raod@d.com<p>We consider Convective heat and mass transfer flow of a nanofluid through a porous medium in rectangular duct. The governing equations have been solved by using Galerkin finite element analysis with linear interpolation functions The effects of nanoparticle volume fraction on all the flow characteristics have been discussed.</p> <p><strong>Keywords: </strong>Nanofluid, Rectangular Duct, Galerkin Method,Porous medium.</p>http://www.iiste.org/Journals/index.php/CPER/article/view/32347Soret and Dufour Effect on Unsteady Free Convective MHD Heat and Mass Transfer Flow with Variable Permeability, Heat Source and Thermal Diffusion2016-08-30T15:58:05+00:00P.H. VEENAd@d.com<p>The present paper deals with the study of unsteady two dimensional free convection with heat and mass transfer flow of an incompressible, viscous and electrically conducting fluid past a continuously moving infinite vertical plate under the influence of transverse magnetic field with variable permeability, heat source and thermal diffusion. The permeability of the porous medium fluctuates in time about a constant mean. The free stream velocity of the fluid vibrates about a mean constant value and the surface absorbs the fluid with constant velocity. Introducing the usual similarity transformations, the unsteady equations of momentum, energy and concentration are made similar. To obtain local similarity solutions of the problem, the equations are solved analytically after applying perturbation technique. The velocity field, temperature field, concentration field and skin friction co-efficient are shown graphically to observe the effects of various parameters entering in the problem. Finally a thorough discussion of different results are presented.</p>http://www.iiste.org/Journals/index.php/CPER/article/view/32348Heat Transfer of MHD Flow of Casson Fluid due to Stretching Sheet with PST and PHF Heating Conditions2016-08-30T15:58:05+00:00Mahantesh M. Nandeppanavard@d.com<p>Here we have considered the two-dimensional flow of non-Newtonian MHD flow of Casson fluid, Using Nevier Stoke’s Equations of Motion we have derived the momentum and energy equstions of Casson fluid, these governing equations of motion and temperature are non-linear partial differential equations which are tedious to solve as they are, hence these partial differential equations are converted into Ordinary differential equations using suitable similarity transformations. These ODE’s are solved numerically and we have analyzed various effects of various governing parameters on flow and heat transfer profiles. The numerical Values of Wall temperature and Wall temperature Profiles are tabulated and discussed in detail.</p> <p><strong>Keywords: </strong>Convective Heat transfer, Non-Newtonian fluid, BVP, IVP, Numerical Solution</p>