Unsteady-state Computational Fluid Dynamics Modeling of Hydrogen Separation from H2/N2 Mixture

Unsteady computational fluid dynamics modeling of free-flight projectile aerodynamics

This paper describes a new multidisciplinary computational study undertaken to model the flight trajectories and the free-flight aerodynamics of both a finned projectile at supersonic velocities and a spinning projectile at subsonic speeds with and without aerodynamic flow-control. Actual flight trajectories are computed using an advanced coupled computational fluid dynamics (CFD)/rigid body dy...

Modeling of Diffusion Propagation due to Ignition of Karaj Oil Depot using Computational Fluid Dynamics Method

Background and Aim: This study investigates the distribution of pollutants from the oil storage ignition scenario using Ensys Fluint software has studied and for the first time in the country the dangerous and unexpected scenarios of explosion and ignition in oil sites using advanced Fluent and monitoring software and aims to preserve the life and financial assets of the areas around the oil de...

MULTI PHASE COMPUTATIONAL FLUID DYNAMICS MODELING OF CAVITATING FLOWS OVER AXISYMMETRIC HEAD-FORMS

 In the present paper, partial cavitation over various head-forms was studied numerically to predict the shape of the cavity. Navier-Stokes equations in addition to an advection equation for vapor volume fraction were solved. Mass transfer between the phases was modeled by a sink term in vapor equation in the numerical analysis for different geometries in wide range of cavitation numbers. The r...

Hydrodynamic Improvement of underwater glider by Computational Fluid Dynamics method

Gliders are new marine vehicles which have research and military uses and they move by sequent diving and climbing. Suitable design of its main body and wings are important for the most advance velocity. hydrodynamic design variables are main body form, wings (cross section, dimensions, shape, longitudinal and vertical position) and hydrostatic parameters (static trim angle, amount of added for...

Computational Modeling in Biological Fluid Dynamics

A major problem in characterising the locomotion of freely-moving, isolated cells in culture is the large variability between individual cells and the large variation in motile characteristics with time. DRIMAPS (Digitally Recorded Interference Microscopy with Automatic Phase Shifting) is a technique developed at the Randall Institute that overcomes this problem by enabling data from large numb...

Unsteady-State Modeling of the Fluidized Bed Polyethylene Reactor