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This paper presents a theoretical study of the dependence of the viscosity of a polar liquid with a surface-active substance (surfactant) on the interaction with the channel wall of a nozzle focusing tube. An example of calculation of liquid viscosity change near the lyophobic surface formed by coating the channel wall of the nozzle focusing tube with surfactant is given. On the basis of numerical modeling, the change of liquid flow velocity in the channel of the nozzle focusing tube is shown when surfactant is introduced, taking into account the effect of “slippage” along the channel walls. There is a low level of interaction between the liquid and the solid wall, which provided an increase in jet velocity at the outlet.

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Study of Changes in the Velocity of Liquid Flow Inside the Channel of the Focusing Tube of the Nozzle of a Waterjet Unit at Introduction of Surface-Active Substances

  • 会议论文

  • 发表日期：

    2025年

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  • O. Kozhus,
  • G. Barsukov,
  • T. Zhuravleva,
  • A. Petrukhin,
  • P. Shlyupkin

摘要

This paper presents a theoretical study of the dependence of the viscosity of a polar liquid with a surface-active substance (surfactant) on the interaction with the channel wall of a nozzle focusing tube. An example of calculation of liquid viscosity change near the lyophobic surface formed by coating the channel wall of the nozzle focusing tube with surfactant is given. On the basis of numerical modeling, the change of liquid flow velocity in the channel of the nozzle focusing tube is shown when surfactant is introduced, taking into account the effect of “slippage” along the channel walls. There is a low level of interaction between the liquid and the solid wall, which provided an increase in jet velocity at the outlet.