The simulated air flow pattern around a moving animal transport vehicle as the basis for a prospective biosecurity risk assessment

Heliyon

Ralf-Gunther Schmidt¹  Jens Seedorf² 

[1] Laboratory for Fluid Mechanics and Turbomachinery, University of Applied Sciences Osnabrück, Osnabrück, Germany;Unit of Animal Hygiene and Food Safety, University of Applied Sciences Osnabrück, Osnabrück, Germany;

关键词: Environmental science;    Veterinary science;    Civil engineering;    Public health;   

DOI  :  10.1016/j.heliyon.2017.e00358

来源: DOAJ

【 摘 要 】

Research that investigates bioaerosol emissions from animal transport vehicles (ATVs) and their importance in the spread of harmful airborne agents while the ATVs travel on roads is limited. To investigate the dynamical behaviour of theoretically released particles from a moving ATV, the open-source computational fluid dynamics (CFD) software OpenFOAM was used to calculate the external and internal air flow fields with passive and forced ventilated openings of a common ATV moving at a speed of 80 km/h. In addition to a computed flow rate of approximately 40,000 m3/h crossing the interior of the ATV, the visualization of the trajectories has demonstrated distinct patterns of the spatial distribution of potentially released bioaerosols in the vicinity of the ATV. Although the front openings show the highest air flow to the outside, the recirculations of air masses between the interior of the ATV and the atmosphere also occur, which complicate the emission and the dispersion characterizations. To specify the future emission rates of ATVs, a database of bioaerosol concentrations within the ATV is necessary in conjunction with high-performance computing resources to simulate the potential dispersion of bioaerosols in the environment.

【 授权许可】

Unknown