Numerical Simulation of Pollutants dilution in a ventilation system

Taking CO2 as tracer gas, and using numerical simulation, the law of indoor air pollutant concentration with the change of ventilation time was obtained. Using the standard κ-ε model and component transport model can simulate the ventilation process of diluting contaminants in a chamber. Through analyzing the results, it is found that the up-supply down-return ventilation does well in ventilation.