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Title of Journal: Exp Fluids

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Abbravation: Experiments in Fluids

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Springer-Verlag

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DOI

10.1002/cber.19580910911

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1432-1114

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Passive mixing control of plane parallel jets

Authors: Nathan E Bunderson Barton L Smith
Publish Date: 2005/05/14
Volume: 39, Issue: 1, Pages: 66-74
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Abstract

An experimental study on the mixing of two plane unventilated parallel jets reveals an instability characterized by sinuous “flapping” of the jets and enhanced mixing of the jets with the ambient fluid The frequency and amplitude of the instability is shown to be a function of the jets’ spacing and momentum flux ratios with the maximum mixing occurring for cases with matched momentum flux When the momentum flux of the two jets is mismatched by as much as a factor of three the flow becomes steady Schlieren flow visualization and hotwire anemometry demonstrate and quantify the largescale mixing The instability has a strong frequency and amplitude dependence on the momentum ratio of the jets The Strouhal number is also found to decrease with the spacing between the jets The instability described provides a means to passively control the jet mixing with the ambient

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  2. Imaging diffusion in a microfluidic device by third harmonic microscopy
  3. Two- and three-dimensional flows in nearly rectangular cavities driven by collinear motion of two facing walls
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  6. Influence of a wavy boundary on turbulence.
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  8. Digital holography for micro-droplet diagnostics
  9. Kriging regression of PIV data using a local error estimate
  10. Active control of an axisymmetric jet with distributed electromagnetic flap actuators
  11. Experimental investigations on steady wake effects in a high-lift turbine cascade
  12. Simultaneous droplet and vapour-phase measurements in an evaporative spray by combined ILIDS and PLIF techniques
  13. Simultaneous droplet and vapour-phase measurements in an evaporative spray by combined ILIDS and PLIF techniques
  14. Experimental study of liquid–vapor phase distribution in a single tube capillary evaporator
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