Combustion, Explosion and Shock Waves

, Volume 41, Issue 1, pp 71–77 | Cite as

Drag of nonspherical particles in a flow behind a shock wave

  • V. M. Boiko
  • S. V. Poplavskii


The early stage of velocity relaxation of nonspherical particles in a flow behind an incident shock wave is considered by the method of multiframe shadowgraphy. A procedure of processing the data on the motion of a free body for determining its acceleration is proposed; in combination with the diagnostic method used, the procedure forms something like a noncontact aerodynamic balance. Novel data on the drag of bodies of irregular shape in a flow behind a shock wave with Mach numbers of 0.5–1.5 and Reynolds numbers of ≈105 typical of dust explosions are obtained. It is found that the values of drag of a nonspherical bluff body and a sphere under these conditions are similar and exceed the drag of a sphere in a steady flow by a factor of 2 to 3.

Key words

shock waves dust suspensions velocity relaxation drag 


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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • V. M. Boiko
    • 1
  • S. V. Poplavskii
    • 1
  1. 1.Institute of Theoretical and Applied Mechanics, Siberian DivisionRussian Academy of SciencesNovosibirsk

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