Computational fluid dynamics investigation of human aspiration in low velocity air: orientation effects on nose-breathing simulations.

ABSTRACT: An understanding of how particles are inhaled into the human nose is important for developing samplers that measure biologically relevant estimates of exposure in the workplace. While previous computational mouth-breathing investigations of particle aspiration have been conducted in slow moving air, nose breathing still required exploration. Computational fluid dynamics was used to estimate nasal aspiration efficiency for an inhaling humanoid form in low velocity wind speeds (0.1-0.4 m s(-1)). Breathing was simplified as continuous inhalation through the nose. Fluid flow and particle trajectories were simulated over seven discrete orientations relative to the oncoming wind (0, 15, 30, 60, 90, 135, 180°). Sensitivities of the model simplification and methods were assessed, particularly the

SUBMITTER: Anderson KR 

PROVIDER: S-EPMC4305117 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature