NIOSHTIC-2 Publications Search
Predicting trajectories and concentrations of particles in a grinding booth.
Bennett-AK; Heinsohn-RJ; Merkle-CL
Joint ASME/ASCE Bioengineering, Fluids Engineering and Applied Mechanics Conference, June 22-24, Boulder, Colorado 1981 Jun; :1-12
A model to assess the effectiveness of a ventilation booth in controlling dust particle generation during the grinding of large castings in gray iron foundries by computing air velocities everywhere in the control volume and computing the trajectories and concentrations of particles was presented. The end result was a computational design program which enabled engineers to predict the concentration of particles at arbitrary points in the vicinity of the source for various booth geometries and volumetric flow rates. Contemporary design procedures did not allow such predictions to be made. The flow field was modeled as two dimensional, irrotational and invisced and contained blockage produced by the grinding wheel. The programs produced graphs showing air velocities in the booth, trajectories of the particles and computed particle concentrations. It was necessary to specify the generation of particles with better accuracy and to include three dimensional and viscous effects in the model for the flow field near the workers, workpiece and grinding wheel if the full expectations of computer aided design is to be achieved for this industry.
NIOSH-Grant; Control-technology; Silica-dusts; Foundries; Grinding-equipment; Grinding-mills; Airborne-particles; Ventilation-systems; Computer-aided-manufacturing
Mechanical Engineering, Pennsylvania State University, 301 Mechanical Engineering Bldg, University Park, PA 16802
Control Technology and Personal Protective Equipment; Research Tools and Approaches; Control-technology
Joint ASME/ASCE Bioengineering, Fluids Engineering and Applied Mechanics Conference, June 22-24, Boulder, Colorado
Pennsylvania State University Park, University Park, Pennsylvania
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division