2003
DOI: 10.2514/2.6847
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Dynamics and Control of an Isolated Jet in Crossflow

Abstract: Experimental results from a systematic exploration of the dynamics and control of large-scale, organized structures in an isolated, circular jet issuing into a uniform cross ow with a jet-to-cross ow velocity (or blowing) ratio of 6 are presented. Surveys of the unsteady ow eld were conducted using a single sensor hot-lm probe, and the instantaneous and time-averaged scalar elds were explored using Mie scattering-based ow visualization. A spinning mechanical valve was used to modulate the jet ow with a single … Show more

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Cited by 74 publications
(43 citation statements)
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“…An experimental study by [33] deals with the correct range of Ri and γ , but it does not look at the generation of surface plumes. The influence of pulsing on non-buoyant JICF have been studied experimentally and numerically [34][35][36], but as far as we are aware the influence of pulsing on buoyant JICF has not been studied before. The influence of propeller and aft of a dredging vessel on the mixing of the dredging plume has also not been studied before.…”
Section: Relevant Simulations and Experiments For A Dredging Plumementioning
confidence: 98%
“…An experimental study by [33] deals with the correct range of Ri and γ , but it does not look at the generation of surface plumes. The influence of pulsing on non-buoyant JICF have been studied experimentally and numerically [34][35][36], but as far as we are aware the influence of pulsing on buoyant JICF has not been studied before. The influence of propeller and aft of a dredging vessel on the mixing of the dredging plume has also not been studied before.…”
Section: Relevant Simulations and Experiments For A Dredging Plumementioning
confidence: 98%
“…Under a low pulsating condition with a square wave form modulation the vortex ring penetrated deeper than the steady jet. Narayanan et al [7] determined that the pulsation frequency for maximized jet spread and mixing is equal to or greater than that associated with the unforced transverse jet. Elshamy et al [8] investigated the dynamic behavior of mechanically excited liquid jets injected into subsonic air cross-flow streams.…”
Section: Introductionmentioning
confidence: 98%
“…The static pressure P at the nozzle entrance varies with time t at exciting frequency f e as: (10) where P 2 is the pressure at the nozzle entrance for the steady unexcited jet and takes a value of 0.5674 MPa, A m is the forcing amplitude and is assumed to be 5% referring to the previous experimental studies [21][22][23][24][25][26][27][28] on subsonic and supersonic excited jet flows, f e is the forcing frequency and will be discussed in detail in the next section.…”
Section: Simulation Setupmentioning
confidence: 99%
“…As a result, the mixing area of the steady jet at y/D = 6 is even larger than that at y/D = 8 and 10. [22] on subsonic jets issued into a subsonic cross flow, i.e. exciting a jet at high frequencies improves the jet spread in the near field, while the low-frequency excitation enhances the mixing in the far field.…”
Section: Mixing Characteristicmentioning
confidence: 99%
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