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NIOSH Program Portfolio

 

Manufacturing

NORA Manufacturing Sector Strategic Goals

921Z6KR - Computational Fluid Dynamics (CFD) in Control Technology

Start Date: 10/1/2006
End Date: 9/30/2010

Principal Investigator (PI)
Name: James Bennett
Phone: 513-841-4311
E-mail: zxd7@cdc.gov
Organization: NIOSH
Sub-Unit: DART
Funded By: NIOSH

Primary Goal Addressed
5.0

Secondary Goal Addressed
6.0


Attributed to Manufacturing
50%

Project Description

Short Summary

This project will use fluid dynamics to find effective ways to reduce workers' exposures to airborne contaminants, in the following NORA Sectors: Manufacturing and Transportation, Warehousing, Utilities. Computational fluid dynamics (CFD), a deterministic model that predicts contaminant transport, will supplement the engineering control design process. The unique efficacy of CFD research in evaluating sampling technologies and occupational health risks from exposure to chemical and biological agents will be leveraged. While these goals have been and will continue to be performed through other well-established disciplines, CFD will be useful in its ability to deal with length scales that are difficult to visualize and with multiple design scenarios that are costly to implement experimentally. Validation research on the accuracy of CFD and other models will be performed, including laboratory experiments.



Description

This project will provide computational fluid dynamic support to several projects within the Institute in FY08. A working list of projects will be compiled based on input from many scientists and engineers within DART. These projects will be screened and a subset selected for analysis. Initial surveys/tests will be performed to provide data for the boundary and initial conditions necessary for model input. Drawings will be made to provide accurate geometrical representations for the models. Following completion of the model building phase, test cases will be run to provide data for model validation. The models will then be run under the conditions of interest to the investigators, and relevant information gathered from the solutions. The following is a list of activities planned for FY2008:



1) Supporting EPHB researchers by modeling engineering controls.

2) Characterization of airflow and disease transmission in passenger aircraft cabins.

3) Investigating the relationship of flow rate and exposure in Navy aircraft painting hangars.

4) Modeling flow inside the fiber classifier.

5) Modeling support for CBR threat mitigation.

6) CO emission, exposure, and control on houseboats and recreational boats.

7) Styrene exposure control during boat manufacture.

8) Technical support for EPHB engineers and scientists in their use of CFD.

This project will make use of various administrative strategies to maintain productivity. Some tasks may be accomplished partly through a contract with Fluent, Inc., because Fluent can translate computer aided design (CAD) geometry into a CFD software package more quickly. Also, collaboration with the University of Cincinnati will continue to facilitate a CFD-trained graduate student working on an EPHB project, with the technical and theoretical support of renowned faculty in the CFD field. Nevertheless, CFD simulations developed and validated in EPHB will continue to define the project, which will be enhanced by these partners.



Objectives

Web of Science will used to search for articles that cite the project outputs.



Mission Relevance

The project will address, in terms of NORA sectors, the following:

• Manufacturing SG 5: Reduce the number of respiratory conditions and diseases due to exposures in the manufacturing sector.

• The project will support the Flavorings project in the design of control measures.

• Manufacturing SG 6: Reduce the prevalence of cancer due to exposures in the manufacturing sector.

• The project will support the Styrene project in the design of control measures. The International Agency for Research on Cancer (IARC) has determined that styrene is a possible human carcinogen.

• Transportation, Warehousing, Utilities SG 4. By 2016, prevent and reduce chemical, biological and physical occupational hazards and exposures resulting in a reduction of occupational injuries, illnesses, and fatalities in the TWU sector.

• The project will predict the spatial patterns of exposure to airborne pathogens onboard commercial aircraft.

• Intermediate Goal 4.3 to Implement substitution programs, engineering controls and administrative programs to reduce and eliminate biological hazards and exposures through collaboration with employers, employees, as well as appropriate union, government, academic, and industry representatives.



The project will address, in terms of NORA cross-sectors, the following:

• Cancer, Reproductive, and Cardiovascular Diseases SG 1. Reduce the incidence of work-related cancer.

• The project will support the Styrene project in the design of control measures. The International Agency for Research on Cancer (IARC) has determined that styrene is a possible human carcinogen.

• Respiratory Diseases SG 1. Prevent and reduce work-related airways diseases.

• Respiratory Diseases SG 2. Prevent and reduce work-related interstitial lung diseases.

• Vis-a-vis both SG 1 and SG 2, the project will support the Flavorings project in the design of control measures.

• Intermediate goal: Prevent and reduce flavorings-induced obstructive lung disease, including bronchiolitis obliterans.

• Respiratory Diseases SG 3. Prevent and reduce work-related respiratory infectious diseases.

• The project will predict the spatial patterns of exposure to airborne pathogens onboard commercial aircraft.

• Emergency Preparedness and Response SG 4: Develop methods to evaluate the spatial and temporal distribution of gases, vapors, and aerosols, as well as liquids or particulates associated with surface contamination.

• The project will develop modeling and statistical tools for determining the spatial extent, degree, and source of contamination in a room or building.

• The project will predict the spatial patterns of exposure to airborne pathogens onboard commercial aircraft.

• Engineering Controls SG 1. Reduce hazardous occupational exposures through the advancement of control technology.

• This project will use CFD to design and evaluate engineering control technology.



The Special Interest Area, Nanotechnology, encompasses the project's support for the Fiber Classifier NORA project. Research and Intervention, Recommendations, and Capacity Building are the NIOSH Performance Goal areas.



Page last updated: June 3, 2011
Page last reviewed: May 23, 2011
Content Source: National Institute for Occupational Safety and Health (NIOSH) Office of the Director

 

NIOSH Program:

Manufacturing