Experimental study on the forcing design for an intermittent injection

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Abstract: In this paper we consider the effects of acceleration and deceleration on the forcing of an intermittent jet. This experimental study specifically focuses on the effect of the acceleration and deceleration on the mixing of an intermittent jet with the ambient fluid and on the growth of disturbances that may lead to turbulence. The influence of different injection strategies has been evaluated. The results show that the deceleration phase may be able to contribute significantly to enhance the mixing of the jet with the ambient fluid. This effect is manifested primarily around the tail of the jet, towards the end of injection. The acceleration phase on the other hand has mainly impact at the leading part of the jet, where the leading part of the jet forms a mushroom shaped structure with minor mixing effect. Graphical abstract: [Figure not available: see fulltext.].


Enheter & grupper
Externa organisationer
  • University of Southampton
  • KTH Royal Institute of Technology

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Strömningsmekanik och akustik
TidskriftExperiments in Fluids
Utgåva nummer8
StatusPublished - 2018 aug 1
Peer review utfördJa