Evaluation of Influenza Virus Exposure Risk in a Building Group

With the densification of population in central urban area and the deterioration of city ecological cycle, the airborne disease virus is becoming a new challenge for human. A three-dimensional fluid dynamic model is developed to simulate the movement of flu virus. Based on the space-time concentration of pathogenic microorganisms of numerical simulation, the analysis of exposure risk is established. By introducing the instantaneous concentration criterion and the accumulated concentration criterion, the instantaneous risk area and the largest person stay time in builds are obtained.