Steady and unsteady flow computation in an elbow draft tube with experimental validation

Entropy Generation In an Unsteady MHD Channel Flow With Navier Slip and Asymmetric Convective Cooling

The combined effects of magnetic field, Navier slip and convective heating on the entropy generation in a flow of a viscous incompressible electrically conducting fluid between two infinite horizontal parallel plates under a constant pressure gradient have been examined. Both the lower and upper plates of the channel are subjected to asymmetric convective heat exchange with the ambient fluid. T...

Computation of Tokamak Equilibria With Steady Flow

At present controlled therm onuclear fusion research is close to dem onstrating the feasibility of a fusion reactor. Three large tokam ak devices, TFTR , JE T , and JT-60, aim at break-even. These experiments are diagnosed and controlled by utiliz­ ing codes which are based on various plasma models. M acroscopic models describing equilibri­ um , stability and transport are am ong the most im po...

Experimental validation of direct and inverse glottal flow models for unsteady flow conditions

The pressure drop along the glottal constriction drives vocal folds self-sustained oscillations during phonation. Physical modeling of phonation is classically assessed with the glottal geometry and the subglottal pressure as known input parameters. Several studies including in-vitro validation show that simplified one-dimensional flow models allow predictions of the flow characteristics to a f...

Numerical Investigation of Steady and Unsteady Flow in Valve Gap

Viscous Computation of Steady/Unsteady Transonic Diffuser Flows

The lag model proposed by Olsen and Coakley (2001) is applied to simulate the steady and unsteady transonic flows in a diffuser. The unsteady flows are induced by imposing fluctuating back-pressures. A fully implicit time–accurate multigrid algorithm is used for solving the Navier-Stokes equations and the coupled k-ω turbulence model equations. Two test cases are investigated, one with a weak s...