Numerical simulation of a chimney flume
Kamath, Shashidhar Manohar
The ventilation of buildings with chimney stacks has been a major problem because of the possibility of re-entry of exhaust gases through the fresh air vents. Harmful and odorous gases and vapors released from industries typically are controlled by employing exhaust systems designed to capture and convey the hazardous agents to a discharge point outside the building. These gases travel through the chimney and are dispersed into the open air. The fresh air vents on the building should be located such that the exhaust smoke leaving the building does not re-enter the building through these vents. The severity of hazards associated with these exhaust emissions is primarily determined by the toxicity of the chemicals, their concentrations at the discharge point, the degree to which they are dispersed. in the atmosphere before - reaching a person or a building air intake, and the sensitivity of the population exposed to the chemicals. The main objective of this research is to determine the location and height of a chimney on top of a building that would effectively disperse the exhaust gases into the atmosphere. The building under study is the Texas Tech field test facility building. A comparison of the experimental data and the numerical predictions for pressure coefficients on the building is also included. Also a comparison with the visual data from experiments conducted in a water tunnel have been made.