The effects variable viscosity on a steady free convective boundary layer flow of a dusty fluid past a vertical permeable stretching surface is studied. The system of non linear partial differential equations governing the equations motion are reduced to a system of ordinary differential equations using similarity transformations. The resultant boundary value problems are then solved numericall...

This paper focuses on the parametric study of steady and unsteady forced and natural convection problems by the certified reduced basis method. These problems are characterized by an input-output relationship in which given an input parameter vector — material properties, boundary conditions and sources, and geometry — we would like to compute certain outputs of engineering interest — heat flux...

The axisymmetric flows with swirl or rotation were solved by a hybrid scheme with lattice Boltzmann method for the axial and radial velocities and finite-difference method for the azimuthal (or swirl) velocity and the temperature. An incompressible axisymmetric lattice Boltzmann D2Q9 model was proposed to solve the axial and radial velocities through inserting source terms into the two-dimensio...

Thermosolutal convection in a square cavity filled with a binary perfect gas mixture and submitted to an oriented magnetic field taking into account the effect of radiation heat transfer is numerically investigated. The cavity is heated and cooled along the active walls whereas the two other walls are adiabatic and insulated. Entropy generation due to heat and mass transfer, fluid friction and ...

Abstract The application of nanoparticles in the base fluids strongly influences presentation cooling as well heating techniques. improve thermal conductivity by fluctuating heat characteristics fluid. expertise increasing transference has captivated several investigators to more evaluate working This study disputes investigation convection flow for magnetohydrodynamics second-grade nanofluid w...

This dissertation focuses on the analysis of lock-exchange gravity-driven flows at high Grashof numbers using highly resolved numerical simulations and Large Eddy Simulation (LES) techniques. The present method uses a non-dissipative Navier-Stokes solver in which the sub-grid scale (SGS) viscosity and diffusivity are calculated dynamically. The use of LES allowed the study of these gravity curr...

In this study, Entropy generation in MHD convective flow past a flat porous oscillating plate with suction or injection are presented for an unsteady, one-dimensional of viscous incompressible fluid. The importance is noticed industrial and scientific fields including heat transfer thermal systems which includes dissipation, chemical reaction, mass transfer, electrical conduction etc. role para...

Foias, Holm & Titi [15] have settled the problem of existence and uniqueness for the 3D LANS-α equations on periodic box [0, L]. There still remains the problem, first introduced by Doering and Foias [17] for the Navier-Stokes equations, of obtaining estimates in terms of the Reynolds number Re, whose character depends on the fluid response, as opposed to the Grashof number, whose character dep...

Abstract— The flow past an infinite vertical isothermal plate started impulsively in its own plane in a viscous incompressible two-phase nanofluid has been considered by taking into account the viscous dissipative heat. Two nano particles Copper (Cu) and Alumina (Al2O3) are submerged in a base fluid, Water (H20). The coupled non-linear partial differential equations which govern the flow are so...