CFD & AMP Center
Department of Mechanical & Aerospace Engineering
West Virginia University
E: ismail.celik@mail.wvu.edu

Hood Capture and Protection Efficiencies

Title
Hood Capture and Protection Efficiencies
 
Sponsor
NIOSH
 
Investigators
Dr. Ismail B. Celik (PI)
Dr. Steven E. Guffey
Ertan Karaismail
 

This study is important to Industrial Hygiene practice for the following reasons;

  • well designed hoods are critical to protecting workers from airborn exposures
  • direct determination of hood effectiveness is difficult in the field
  • the study results will lead to feasible means to verify hood effectiveness using velocity measurements as a surrogate for exposure measurements
  • the study will answer important, practical questions with highly relevant to designing good hoods, leading more effective hood designs and more judicious selection of hood airflows
  • the study will make it more feasible to predict hood effectiveness, which will lead to improved hood designd and will contribute to greater utilization of enclosing hoods.

The overall aim of the study is to determine the effects of important parameters on the effectiveness of hoods, both capturing and enclosing , and to provide a foundation with computational fluid dynamics for predicting the effectiveness of the hoods in the future. The project will have both experimental and numerical arms. The basic goal of the CFD arm at each stage of the study is to make the CFD model as accurate as possible and to inform the selection of some test conditions for the experimental arm of the study. Specifically, the CFD will be employed to determine:

  • The most important variables affecting hood performance.
  • The most important and efficient sets of conditions to investigate with human subjects.
  • The interactive effects of independent variables on each type of hood for a broad range of conditions, including those that cannot be tested within the wind tunnel.
  • The conditions for which the CFD model does well and the conditions for which it does not.