Experimental Observations of Entrainment Rates in Dense Gas Dispersion Tests

  • James A. Fay
Conference paper
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)


It is shown how the local entrainment rate and the local Richardson number used in box models of dense gas cloud dispersion can be found from experimental measurements of wind tunnel simulations. These calculated values can then be used to check the common hypothesis of box and other models that the dimensionless entrainment is a universal function of the local Richardson number. It is found that some experiments do not conform to this hypothesis, most likely because of the vigorous initial mixing of the cloud. An empirical mixing law is proposed for this early stage which does not violate energy conservation.


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Copyright information

© Springer-Verlag Berlin, Heidelberg 1984

Authors and Affiliations

  • James A. Fay
    • 1
  1. 1.Department of Mechanical EngineeringMassachusetts Institute of TechnologyCambridgeUSA

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