Contribution of facial feature dimensions and velocity parameters on particle inhalability.

ABSTRACT: To examine whether the actual dimensions of human facial features are important to the development of a low-velocity inhalable particulate mass sampling criterion, this study evaluated the effect of facial feature dimensions (nose and lips) on estimates of aspiration efficiency of inhalable particles using computational fluid dynamics modeling over a range of indoor air and breathing velocities. Fluid flow and particle transport around four humanoid forms with different facial feature dimensions were simulated. All forms were facing the wind (0.2, 0.4 m s(-1)), and breathing was simulated with constant inhalation (1.81, 4.3, 12.11 m s(-1)). The fluid flow field was solved using standard k-epsilon turbulence equations, and laminar particle trajectories were used to determine critical areas

SUBMITTER: Anthony TR 

PROVIDER: S-EPMC4780249 | biostudies-literature | 2010 Aug

REPOSITORIES: biostudies-literature