Design and computational fluid dynamics investigation of a personal, high flow inhalable sampler

T Renée Anthony; Andrea C Landázuri; Mike Van Dyke; John Volckens

doi:10.1093/annhyg/meq029

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Design and computational fluid dynamics investigation of a personal, high flow inhalable sampler

Journal article

Open access

Design and computational fluid dynamics investigation of a personal, high flow inhalable sampler

T Renée Anthony, Andrea C Landázuri, Mike Van Dyke and John Volckens

The Annals of occupational hygiene, Vol.54(4), pp.427-442

06/2010

DOI: 10.1093/annhyg/meq029

PMCID: PMC4780251

PMID: 20418278

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Abstract

The objective of this research was to develop an inlet to meet the inhalable sampling criterion at 10 l min(-1) flow using the standard, 37-mm cassette. We designed a porous head for this cassette and evaluated its performance using computational fluid dynamics (CFD) modeling. Particle aspiration efficiency was simulated in a wind tunnel environment at 0.4 m s(-1) freestream velocity for a facing-the-wind orientation, with sampler oriented at both 0 degrees (horizontal) and 30 degrees down angles. The porous high-flow sampler oriented 30 degrees downward showed reasonable agreement with published mannequin wind tunnel studies and humanoid CFD investigations for solid particle aspiration into the mouth, whereas the horizontal orientation resulted in oversampling. Liquid particles were under-aspirated in all cases, however, with 41-84% lower aspiration efficiencies relative to solid particles. A sampler with a single central 15-mm pore at 10 l min(-1) was also investigated and was found to match the porous sampler's aspiration efficiency for solid particles; the single-pore sampler is expected to be more suitable for liquid particle use.

Models, Theoretical

Environmental Monitoring - instrumentation

Models, Chemical

Humans

Environmental Monitoring - methods

Air Movements

Hydrodynamics

Aerosols - analysis

Inhalation Exposure - analysis

Inhalation Exposure - statistics & numerical data

Workplace

Equipment Design

Inhalation

Particle Size

Particulate Matter - analysis

Occupational Exposure - analysis

Computer Simulation

Manikins

Air Pollutants, Occupational - analysis

Occupational Exposure - statistics & numerical data

Filtration - instrumentation

Details

Title: Subtitle: Design and computational fluid dynamics investigation of a personal, high flow inhalable sampler
Creators: T Renée Anthony - Department of Occupational and Environmental Health, University of Iowa, Iowa City, IA 52242-5000, USA. renee-anthony@uiowa.edu
Andrea C Landázuri
Mike Van Dyke
John Volckens
Resource Type: Journal article
Publication Details: The Annals of occupational hygiene, Vol.54(4), pp.427-442
Publisher: England
DOI: 10.1093/annhyg/meq029
PMID: 20418278
PMCID: PMC4780251
ISSN: 0003-4878
eISSN: 1475-3162
Grant note: R21OH009114 / NIOSH CDC HHS R21 OH009114 / NIOSH CDC HHS
Language: English
Date published: 06/2010
Academic Unit: Occupational and Environmental Health
Record Identifier: 9983997997202771

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