Civil and Environmental Engineering at Duke

publications by J Jeffrey Peirce.


Papers Published

  1. Stessel, Richard Ian and Peirce, J. Jeffrey, PARTICLE SEPARATION IN PULSED AIRFLOW., Journal of Engineering Mechanics, vol. 3 no. l0 (1987), pp. 594 - 1607 .
    (last updated on 2007/04/09)

    Abstract:
    A theoretical model was developed based on a fluid mechanical force balance to describe the behavior of particles in pulsing airflow. Several attributes distinguished this flow regime from those that have been widely studied: (1) The fluid was a gas; (2) the particles were much larger than aerosol; (3) the airflow was pulsed, as opposed to the more commonly studied oscillatory flow; and (4) the flow was vertical, requiring the inclusion of a body force in the expression. Much effort in the theoretical formulation and calibration was devoted to the acceleration effect, due to its importance in time-varying flow. Computer models were developed and presented that were used in laboratory calibration of the theoretical expression and in modeling particle separation in rising, pulsing airflow.

    Keywords:
    FLOW OF FLUIDS - Two Phase;FLUID MECHANICS;CLASSIFIERS - Design;

 

Department of Civil and Environmental Engineering | Pratt School of Engineering | Duke University
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