This paper presents a prototype application of a collaborative computational steering system for interactive computational fluid dynamics (CFD) simulations. One or more visualization clients allow the user to interact with the concurrently running CFD simulation. To provide interactivity even for high resolution runs the parallel Lattice Boltzmann-based simulation kernel is performed on a high ...

Wind catchers are traditional natural ventilation systems attached to buildings in order to ventilate the indoor air. The most common type of wind catcher is four sided one which is capable to catch wind in all directions. CFD simulation is the perfect way to evaluate the wind catcher performance. The accuracy of CFD results is the issue of concern, so sensitivity analyses is crucial to find ou...

Numerous analyses on the mass transfer phenomena and hydrodynamics for the fluid adjacent to the membrane have been studied and visualized by computational fluid dynamics (CFD) mathematical modeling and simulation. The availability of CFD simulation study to reveal the concentration polarization profile in the membrane channel, which considering hydrodynamics and membrane transport properties i...

passive solar systems such as solar chimneys need solar radiation in order to work. therefore, they cannot present stable natural ventilation when solar energy vanishes: to have a more robust and stable condition, solar energy should be stored during the day and released back during the night. phase change materials can save additional thermal energy during the day and release it during the nig...

Draft tube of Francis type hydraulic turbine usually consists of: cone, elbow and diffuser. On the contrary, in some power stations an extra pipe should be added to the draft tube at the bottom of cone because of installation limitation. In this paper, this special case has been numerically studied. To this end CFD analysis was applied to simulate all parts of hydraulic turbine. A homogeneous m...

This work focuses on the development of a multiscale computational fluid dynamics (CFD) simulation framework with application to plasma-enhanced chemical vapor deposition of thin film solar cells. A macroscopic, CFD model is proposed which is capable of accurately reproducing plasma chemistry and transport phenomena within a 2D axisymmetric reactor geometry. Additionally, the complex interactio...

This paper introduces Floasys, a Web-based platform to foster the collaboration among engineers involved in Computational Fluid Dynamics (CFD) simulations. The platform has been designed around the simulation data, i.e., fostering and stimulating sharing, re-use and aggregation of models, simulation results and engineers annotations. Floasys requirements come directly from an extensive requirem...

This work is focused on reduction of swirling in cases from hydraulic machinery and, thus, mitigation instabilities associated with flow. We study this problem analytically using the torque integral equation, numerically computational fluid dynamics (CFD) simulations, and experimentally a swirl generator that generates flow approximating draft tube hydro turbine operating at part load, featurin...

Sieve trays are widely used in the gas- liquid contactors such as distillation and absorption towers. In this article, a three-dimensional, two phase CFD model using Euler-Euler framework was developed to simulate a distillation tower with two sieve trays. Hydrodynamic simulation of air and water system in different rates of gas phase was carried out and velocity distribution parameters, clear ...