Experimental study on the impinging of two opposed inclined electrified laminar jets in the stagnant dielectric medium

Tabatabaee-Hosseini, Pejman; Sadri, Behnam; Esmaeilzadeh, E.

doi:10.1016/j.expthermflusci.2012.05.008

Cited by 3 publications

(1 citation statement)

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“…As We passes the thresh-old value, the lateral inertia of the liquid jet also increases and becomes comparable to surface tension forces and jet's viscosity. At this point, according to Tabatabaee-Hosseini et al (2012), the free surface of the jet behaves like a stretched membrane which executes oscillations in the lateral direction and develops axisswitching.…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigation of Flow and Coherent Properties of Excited Non-Circular Liquid Jets

Babayan

Tabatabaee-Hosseini

Kandjani

et al. 2019

JAFM

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Non-circular jet is identified as an efficient passive flow-control technique that attracts many research topics. The existence of twine-vortexes is the main reason for dissimilarity between circular and non-circular jets. Which also influences the production of droplets and satellites as well as the jet instability. This investigation presents instability analysis of liquid-gas interface as an applicable conception in free-jet flows. We experiment different jet geometries within a gas ambient in order to study their hydrodynamic behavior. These studies give an appropriate perception about contributing forces that play essential roles in fluid instability. We focus on varying viscosity and surface tension as our excitation techniques. These methods are vital to examine the key properties of non-circular jets such as breakup and decay length, axis-switching wavelength as well as produced droplets and satellites characteristics. First, instabilities of charged liquid jets are investigated by considering the interaction between electric and inertial forces. Also, the viscosity effect was studied for its interaction with the inertial and surface tension forces. In each case, liquid jet instability for various nozzle geometries over a specific range of jet velocity is examined. The obtained results illustrate that the geometry of nozzle has an important effect on jet instability. In addition, by increment of We number, the breakup and decay length as well as the axis-switching wavelength are raising. However, by the rise of twin-vortex number, the breakup length increases but the decay length and axis-switching wavelength decrease.

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Section: Resultsmentioning

confidence: 99%