Experimental and Numerical Studies of the Free Surface Flow over the Patterned Weir

Tanase, Nicoleta-Octavia; Enache, Adriana; Broboana, Diana; Balan, Corneliu

doi:10.1109/atee52255.2021.9425294

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2023

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“…In this study, the stages of the jetting regime are investigated experimentally and numerically by a computational fluid dynamics model implemented in ANSYS Fluent. Numerical simulations have been an important tool and have supplied extensive information about various studied phenomena [9,10], including liquid jets and their breakup [11,12]. By use of the CFD model, we determine the velocity distributions during drop formation and pinch-off at various sections throughout the liquid jet.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigations of the jetting regime

Tanase

Rasuceanu

Bălan

2023

IOP Conf. Ser.: Earth Environ. Sci.

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In this paper we highlight the first stages of liquid injection through a capillary nozzle prior to the jet formation regime. We emphasize the asymmetry of water-air interface at the beginning of the injection of liquid and the axial symmetry which follows when the jet is fully formed. Numerical simulations are performed in order to estimate the relaxation of the velocity distribution of the liquid as it leaves the capillary nozzle. The plug flow condition for low-viscosity liquid jets is investigated in relation with the parabolic velocity distribution in the nozzle. The numerical data is also used to characterize the flow during the drop formation and pinch-off, both driven by the action of surface tension.

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