کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4453332 1312153 2006 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computational fluid dynamics investigation of particle inhalability
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
Computational fluid dynamics investigation of particle inhalability
چکیده انگلیسی

This study uses computational fluid dynamics to investigate particle aspiration at the low air velocities typical of occupational settings. A realistic representation of a human head on a simpler geometric torso was positioned facing the wind (0.2,0.4ms-1), and breathing was simulated using constant inhalation (1.8,4.3ms-1). Aspiration was simulated using laminar transport for particles 0.3–116μm. Results from the 0.4ms-1 freestream and 4.3ms-1 inhalation rate compared well with results from the literature for smaller particles. For particles ⩾68μm, simulations yielded smaller aspiration efficiencies than reported in experiments. For all low velocity conditions studied, the aspiration efficiency curve dropped well below the 50% recommended by the ACGIH in the forward-facing orientation. Additional investigation of aspiration efficiency at other orientations relative to the wind is recommended to fully investigate aspiration efficiency for large particles in occupational environments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Aerosol Science - Volume 37, Issue 6, June 2006, Pages 750–765
نویسندگان
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