Distribution of the Drop Substance in the Target Fluid at the Coalescence Intrusive Mode

High-speed video recording was used to trace the matter transfer pattern of a freely falling col-ored water drop and the deformation of the free surface of the target fluid in the intrusive mode, when the available potential surface energy (APSE) exceeds the drop kinetic energy. At the initial stage of submerging, the free surface of the unified drop-target fluid system remains convex. The inflowing drop forms a lenticular intrusion in the fluid bulk, which gradually transforms into a vortex ring. The cavity begins to form with a time delay Δt = 10-12 ms. The surface of the cavity includes traditional flat, spherical, as well as cylindrical and conical sec-tions moving at different velocities. The temporal variability of the intrusion and cavern ge-ometry has been traced. In the wake, past the sub-merging ring, the drop matter is preserved in the form of individual fibers.

drop, cavern, intrusion, vortex, matter transport

Volume 23, issue 6, 2022 year

Распределение вещества капли в принимающей жидкости в интрузивном режиме слияния

Методом высокоскоростной видеорегистрации прослежена картина переноса вещества свободно падающей капли воды и деформация свободной поверхности принимающей жидкости в интрузивном режиме, когда доступная потенциальная поверхностная энер-гия (ДППЭ) превышает кинетическую энергию капли. На начальном этапе слияния сво-бодная поверхность объединенной системы «капля – жидкость» остается выпуклой. Втекающая капля образует в толще жидкости чечевицеобразную интрузию, которая по-степенно преобразуется в вихревое кольцо. Каверна начинает формироваться с запазды-ванием Δt = 10-12 мс. Поверхность каверны включает участки различной формы – тра-диционные плоские и сферические, а также цилиндрические и конические, движущиеся с различной скоростью. Прослежена временная изменчивость геометрии интрузии и ка-верны. В следе за погружающимся кольцом вещество капли сохраняется в виде отдель-ных волокон.

капля, каверна, интрузия, вихрь, перенос вещества

Volume 23, issue 6, 2022 year

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