Numerical analysis of pollutant dispersion around elongated buildings: An embedded large eddy simulation approach

Simulation of Dispersion of Pollutant by Eddy Field

This research studies the behavior of the dispersion of a pollutant cloud, through the simulation of an eddy field velocity. To do so, a mathematical model was developed, with base in the Monte Carlo simulations, in order to analyze all statistic aspects, present in this process. A computational program was developed, so that it can be possible to establish the behavior of the cloud size, in a ...

Natural Ventilation in Buildings: Measurement in a Wind Tunnel and Numerical Simulation with Large Eddy Simulation

Yi Jiang, Donald Alexander, Huw Jenkins, Rob Arthur, Qingyan Chen*, Building Technology Program, Massachusetts Institute of Technology 77 Massachusetts Avenue, Cambridge, MA 02139-4307 Welsh School of Architecture, Cardiff University, Bute Building, King Edward VII Avenue, Cardiff CF10 3NB, Wales, UK School of Mechanical Engineering, Purdue University, 1288 Mechanical Engineering Building, West...

Some Aspects of Numerical Studies of Turbulent Flows Using Large Eddy Simulation Technique

Analysis of Numerical Errors in Large Eddy Simulation

We consider the question of \numerical errors" in large eddy simulation. It is often claimed that straightforward discretization and solution using centered methods of models for large eddy motion can simulate the motion of turbulent ows with complexity independent of the Reynolds number and depending only on the resolution \" of the eddies sought. This report considers precisely this question ...

Large-Eddy Simulation of pollutant dispersion around a cubical building: analysis of the turbulent mass transport mechanism by unsteady concentration and velocity statistics.

Pollutant transport due to the turbulent wind flow around buildings is a complex phenomenon which is challenging to reproduce with Computational Fluid Dynamics (CFD). In the present study we use Large-Eddy Simulation (LES) to investigate the turbulent mass transport mechanism in the case of gas dispersion around an isolated cubical building. Close agreement is found between wind-tunnel measurem...