Optimization of Flows in Jet-Film Contact Devices

  • A. V. Dmitriev
  • E. I. Salakhova
  • O. S. DmitrievaEmail author
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


Within the scope of works on increasing the efficiency of heat and mass transfer processes, a design of an apparatus with a new jet-film contact device is proposed. The calculations were conducted to research the heat interaction of the surfaces of the new contact device and the inner wall of the apparatus with different environment (air, carbon dioxide and water vapor), the contact of the environment with the surface of the inner wall of the apparatus, with the surface of the vertical baffle plate, with the free surface of the outer stage, and with the free surface of the inner stage of the jet-film contact device were considered. It is shown that the heat transfer coefficient at a high flow velocity (20 m/s) is different for air, carbon dioxide, and water vapor. It is proved that the physical properties of the environment differing in the Prandtl number determine the dependence of the Nusselt number on the Reynolds number. It is found out that it is efficient to direct the maximum number of flows to the surfaces of the inner wall of the apparatus and the outer stage of the contact device, where the heat and mass transfer process is the most intensive. Criteria dependencies for the studied surfaces and environments were obtained. The studied dependencies show high values of the Nusselt number which suggests high efficiency of the contact device.


Contact device Flow velocity Free surface 



The work was performed with funding from the grant of the President of the Russian Federation № MK-4522.2018.8.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • A. V. Dmitriev
    • 1
  • E. I. Salakhova
    • 2
  • O. S. Dmitrieva
    • 2
    Email author
  1. 1.Kazan State Power EngineeringKazanRussia
  2. 2.Kazan National Research Technological UniversityKazanRussia

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