Room Air Convection and Ventilation Efficiency : Numerical

Mathew, Chacko

Room Air Convection and Ventilation Efficiency : Numerical

1994

New York Institute of Technology

English

PDF

Thesis (M.S.)--New York Institute of Technology

School of Engineering and Computing Sciences

Department of Environmental Technology and Sustainability

Brandon R. Brygider

The thesis is on developing a model on indoor air quality in asbestos abatement sites using vortex dynamics method. The room air velocity is simulated via the discreet vortex dynamics method based on the vorticity fo�mulation of the naiver stokes equations. Individual vortices are calculated in a Lagrangian reference frame. A major feature of the vortex method is that it alleviated the need for a statistically steady state model of turbulence. The energy conservation equation is solved simultaneously for the temperature I and velocity fields are coupled via the buoyancy term. Residence time, local age and life expectancy measure time along particle paths from inlet to exhaust, from inlet to a specified location within the system and from this location to the exhaust, residence time variables are best described in terms of probability distribution functions.
After the model was developed, the results of the model were compared with the results of the samples taken at the same conditions and practical application of the model was confirmed.
The thesis go extremely deep enough to historical background of indoor air quality issues. The sampling methods, precautions, federal standards in abatement sites, and other issues in sampling