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RAS PresidiumДоклады Российской академии наук. Физика, технические науки Doklady Physics

  • ISSN (Print) 2686-7400
  • ISSN (Online) 3034-5081

TRANSFER OF A DROP MATERIAL DURING THE PRIMARY CAVERN FORMATION

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PII
10.31857/S2686740022060062-1
DOI
10.31857/S2686740022060062
Publication type
Status
Published
Authors
Yu. D. Chashechkin
  • Affiliation: Ishlinsky Institute for Problems in Mechanics of Russian Academy of Sciences
A. Yu. Ilyinykh
  • Affiliation: Ishlinsky Institute for Problems in Mechanics of Russian Academy of Sciences
Volume/ Edition
Volume 508 / Issue number 1
Pages
42-52
Abstract
The transfer of a freely falling drop matter in the bulk of a target fluid at rest at the stage of primary cavity formation was traced by high-speed video recording for the first time. In the experiments, drops of water, ink solution (diluted in a ratio of 1:100) or a saturated solution of baking soda with a diameter of D = 0.43 cm fell with velocity of U = 3.1 m/s into fresh water or a 20% ammonium thiocyanate solution in the splash formation mode. In all experiments, the wall of the growing cavity was penetrated by thin fibers containing drop matter, which form an intermediate fine-structured layer. After the end of the fiber growth stage with a duration of 7–8 ms, the diffusion smoothed the concentration gradients, a liquid shell of intermediate density with a thickness of 1.5 to 0.7 mm was formed around the growing cavity. The shell is separated by a sharp boundary from the target fluid. A new group of inclined fibrous loops was formed in the wake of the collapsing cavity.
Keywords
капля каверна волокна промежуточный слой
Date of publication
16.09.2025
Year of publication
2025
Number of purchasers
0
Views
16

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