DEVELOPMENT OF A COMPUTATIONAL FLUID DYNAMICS MODEL FOR THE DESIGN OF PNEUMATIC DUST SAMPLING DEVICE

摘要

Researchers at the Colorado School of Mines have developed a prototype mine Dust Sampling Device (DSD) to collect consistent and representative samples of mine dust. The DSD works by blowing a light puff of air onto the mine dust and entraining scoured dust into a sampling bag. These samples are then tested using the Coal Dust Explosibility Meter to determine inert content and to confirm that sufficient amounts of rock dust have been placed in order to prevent coal dust explosions. Numerical modeling using Computational Fluid Dynamics has helped refine the prototype design and has led researchers to determine optimum sampler geometry, air pressure and nozzle configuration.