Grid technology is widespreading, but most grid-enabled applications just exploit shared storage resources rather than computational ones, or utilize static remote allocation mechanisms of Grid platforms. In this paper the porting on a Globus equipped platform of a hierarchically distributed-shared memory parallel version of an application for particle-in-cell (PIC) simulation of plasma turbule...

Numerical simulations have been undertaken for the benchmark problem in a Square cavity by using computational fluid dynamics software. This work aims at discussing the fundamental numerical and computational fluid dynamic aspects which can lead to the definition of the following meshing methods and turbulence models. The meshes used for the simulation are hexahedral, hexahedral cell with near ...

Capturing fine details of turbulence on a coarse grid is one of the main tasks in real-time fluid simulation. Existing methods for doing this have various limitations. In this paper, we propose a new turbulence method that uses a refined second vorticity confinement method, referred to as robust second vorticity confinement, and a synthesis scheme to create highly turbulent effects from coarse ...

Knowledge of the turbulence in wakes wind turbines is important to improve operation and lifetime downstream exposed these wakes. As investigation a rotating turbine can be challenging, both experimentally numerically, static actuator discs substitute turbines. To investigate similarity how turbulent inflow alters result, an experimental tunnel study presented that compares hot-wire measurement...

The paper presents an experimental campaign developed to contribute the current research considering operation of Horizontal Axis Tidal Turbines within stochastic flow conditions, namely turbulent and wake induced flows. was conducted at approximately a 1/20th-scale recirculating flume. Experiments were over five differing setups, yielding baseline low Turbulence Intensity case, two high turbul...

A fully-resolved direct-numerical-simulation (DNS) approach for investigating flexible bodies forced by a turbulent incoming flow is designed to study the flapping motion of flag at moderate Reynolds number. The generated placing passive grid inlet numerical domain and turbulence level impacting can be controlled changing its downstream distance from grid. computational framework based on immer...

Continuing advances in computer resources now allow researchers to simulate thunderstorms with very high resolution. For example, it is possible to simulate deep moist convection (including an entire mesoscale convective system) with grid spacing on the order of 100 m. It is natural to ask whether such high resolution is necessary, and at what point can simulations of convective processes be co...

In this validation work two turbulence models (k-ε and SST model) and two grids (a finer hybrid grid and a tetrahedral coarser grid) are considered in order to model helium release and dispersion. Simulation results are compared against an experiment of jet release phenomena in the Battelle Model Containment facility (BMC), a multi-compartment facility with a total volume of about 560 m. In the...