TY - JOUR
T1 - Methodology for simulating air leakages of an N95 filtering facepiece respirator-A pilot study
AU - Lei, Zhipeng Lei
AU - Yang, Jingzhou(James)
PY - 2012
Y1 - 2012
N2 - Air leakages happen when a respirator cannot fit its user well. This paper presents a methodology to predict potential leakage locations for an N95 filtering facepiece respirator. In this pilot study, we assume that the respirator is impermeable. Geometry features of a large size headform and a 3M 8210 respirator were captured by a 3D scanner. Using finite element (FE) method, the interaction between respirator and headform models was modeled in order to obtain their deformed shapes and fitting positions. Using computational fluid dynamics (CFD) method, the air flow in the domain between the respirator inner surface and the headform frontal surface was simulated. Four situations, including the exhalation with nose, inhalation with nose, exhalation with mouth, and inhalation with mouth, were simulated separately. Results showed that the air leakage mostly happened at areas near the nasal bridge. It was also found that the pressure caused by the respiration was considerably low.
AB - Air leakages happen when a respirator cannot fit its user well. This paper presents a methodology to predict potential leakage locations for an N95 filtering facepiece respirator. In this pilot study, we assume that the respirator is impermeable. Geometry features of a large size headform and a 3M 8210 respirator were captured by a 3D scanner. Using finite element (FE) method, the interaction between respirator and headform models was modeled in order to obtain their deformed shapes and fitting positions. Using computational fluid dynamics (CFD) method, the air flow in the domain between the respirator inner surface and the headform frontal surface was simulated. Four situations, including the exhalation with nose, inhalation with nose, exhalation with mouth, and inhalation with mouth, were simulated separately. Results showed that the air leakage mostly happened at areas near the nasal bridge. It was also found that the pressure caused by the respiration was considerably low.
KW - Air leakage
KW - N95 face-piece filtering respirator
KW - Respirator fit and comfort
UR - http://www.scopus.com/inward/record.url?scp=83655164402&partnerID=8YFLogxK
U2 - 10.3722/cadaps.2012.43-53
DO - 10.3722/cadaps.2012.43-53
M3 - Article
AN - SCOPUS:83655164402
VL - 9
SP - 43
EP - 53
JO - Computer-Aided Design and Applications
JF - Computer-Aided Design and Applications
SN - 1686-4360
IS - 1
ER -