Analysis of mixing of impinging radial jets with crossflow in the regime of counter flow jet formation

Kartaev, E. V.; Emel’kin, V. A.; Ktalkherman, M. G.; Кузьмин, В. С.; Aul’chenko, S. M.; Vashenko, S. P.

doi:10.1016/j.ces.2014.07.062

Cited by 26 publications

(18 citation statements)

References 21 publications

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“…This flow rate of quenching air is larger than total flow rate of heterogeneous mainstream which is equal 3.7 g/s taking into account condensation of silica vapor. In accordance with [26,27] in this case jet-to-mainstream momentum-flux ratio is large enough to guarantee an impingement of jets and formation of a cold counter flow jet. As result, a recirculation flow zone occurs upstream of plane of injection of cooling air jets where hot mainstream is rapidly diluted and cooled.…”

Section: Methodsmentioning

confidence: 84%

High-temperature synthesis of silica particles by the chloride method in the regime of counter flow jet quenching

Kartaev

Emel’kin

Aul’chenko

2017

AIP Conference Proceedings

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Abstract. The experimental and numerical investigations of synthesis of silica (SiO2) nanoparticles from premixed gaseous silicon tetrachloride (SiCl4) and oxygen of dry air in the high-temperature nitrogen flow of plasma-chemical reactor have been carried out. The regime of counter flow jet quenching of high-temperature heterogeneous flow has been utilized. The latter provided a rapid cooling of silica particles under nonequilibrium conditions with substantial temperature gradients. Synthesized silica particles were amorphous, with surface-average size being about 28 nm. The results of numerical calculations are found to agree qualitatively with experimental data.

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Section: Methodsmentioning

confidence: 84%

High-temperature synthesis of silica particles by the chloride method in the regime of counter flow jet quenching

Kartaev

Emel’kin

Aul’chenko

2017

AIP Conference Proceedings

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“…This study has been carried out based on experimental setup and operating modes described in [2,3] (see Fig.2). The heated nitrogen was used as crossflow gas of the cylindrical duct of diameter D=32 mm.…”

Section: Methodsmentioning

confidence: 99%

“…Cooling gas was fed tangentially into the annular manifold, its direction is shown in Fig.2 In contrast to [2,3], orifices of 3 mm in diameter instead of 5 mm were chosen in order to reach greater values of J at the same jets' flow rates. In turn, this should allow us to indicate gradual deceleration of counter flow jet and finally its complete stop at very large values of J.…”

Section: Methodsmentioning

confidence: 99%

“…Reducing the orifice diameter resulted in a necessity of more precise "focusing" of turbulent jets issuing into the cylindrical duct. It has been provided by increased orifice wall thickness t (t/d=1.33 or 1.67 compared with t/d=0.60 in [2,3]) and similar flow pattern at the entry of each orifice. The latter demonstrates only linear dependence J 1/2 according to formula (2).…”

Section: Methodsmentioning

confidence: 99%

“…In [6,7] it was demonstrated that, as the geometrical similarity of the mixing chambers, working in the impinging jets mode, being followed, the mixing quality is almost constant at the same values of the penetration parameter h/D. Thus, the parameters of the counter flow axial penetration depth h v /D and radial penetration depth h/D are related as follows from (2) and (3) at J < 625 [2,3]:…”

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confidence: 95%

See 2 more Smart Citations

Upstream penetration behavior of the developed counter flow jet resulting from multiple jet impingement in the crossflow of cylindrical duct

Kartaev

Emel’kin

Ktalkherman

et al. 2018

International Journal of Heat and Mass Transfer

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Liquid mixing intensification by adding swirling flow in the transverse jet mixer

Zhang

et al. 2021

AIChE Journal

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In this study, effect of swirling addition on the liquid mixing behavior of multiorifice‐impinging transverse jet mixer has been investigated by planar laser‐induced fluorescence as well as large eddy simulation (LES). In the case of swirling addition into the jet flow, there exists an optimized swirling jet angle or optimized jet‐to‐cross velocity ratio for the fixed mixer configuration. A larger swirling jet angle will make the flow dominated by the swirling, resulting in a slower mixing process. Interaction of swirling crossflow with no‐swirling‐injected streams, or with swirling‐injected streams in the opposite direction is beneficial for the mixing. LES predictions show that many small vortices are produced homogenously due to intensified impingement in the case of opposite swirling directions, leading to a relative fast mixing process in few milliseconds. Whereas the mixing is restrained when the swirling directions of two flows are the same.

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Analysis of mixing of impinging radial jets with crossflow in the regime of counter flow jet formation

Cited by 26 publications

References 21 publications

High-temperature synthesis of silica particles by the chloride method in the regime of counter flow jet quenching

High-temperature synthesis of silica particles by the chloride method in the regime of counter flow jet quenching

Upstream penetration behavior of the developed counter flow jet resulting from multiple jet impingement in the crossflow of cylindrical duct

Liquid mixing intensification by adding swirling flow in the transverse jet mixer

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