A theoretical model of binary alloy melting and solidification induced by pulsed-laser irradiation is formulated using the mass and internal energy balances in the liquid and solid phases. The interface between the solid and liquid phases is modeled as a discontinuity surface where the mass and...

The necessity of an energy supplier was to solve an impact problem presented at the damper winding ring or short-circuit ring of a 625kVA generator and to redesign a fan for it. The principal restriction was the time. It should be done in 15 calendar days, working with drawings of the machine,...

We present a qualitative analysis of the flow pattern in cerebral aneurysms and the effect on the velocity reduction of stent implantation. We use the Lattice Boltzmann (LB) method, which implements a mesoscopic dynamics of the interactions between fictitious particles. LB provides an efficient...

The finite volume method is used as a numerical method for solving the fluid flow equations. This method is appropriate to employ under structured and unstructured meshes. Mixed grids, combining both types of grids, are investigated. The coupling of different grids is done by overlapping...

The simulation of the aerothermal environment that a space vehicle experiences during the atmospheric descent is mandatory for the design of thermal shields of re-entry vehicles. In this framework, both numerical and experimental design approaches, as computational fluid dynamics and plasma wind...

A mathematical model able to deal with high temperature gas effects in hypersonic flow fields is presented. In order to assess this model, four typical hypersonic applications are considered. The numerical results are presented and compared with experimental data. The effects of the catalyticity...

For interface-tracking simulation of two-phase flows with a high density ratio, we propose a computational method, NS–PFM, combining Navier–Stokes (NS) equations with phase-field model (PFM) based on the free energy theory. Through the numerical simulations, it was confirmed that (1) the...