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Studies of the Swirling Submerged Flow Through a Confuser

  • Andrii RogovyiEmail author
  • Serhii Khovanskyi
  • Iryna Hrechka
  • Anatoly Gaydamaka
Conference paper
  • 28 Downloads
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

In vortex devices, it is often required to conserve part of the energy of the swirl flow to be dispersed. One of the most rational ways to save energy is to use a confuser. The characteristic of the confuser on a swirling flow has been little studied. It was performed a numerical simulation of the operating characteristics of the confuser. To validate the mathematical model, a comparison is made with the experimental data on the expiration of a swirling jet. Validation of the results was made by comparing with the experimental results not only qualitatively, but also quantitatively in terms of velocities at characteristic points of the flow. A comparison of the flow patterns shows a fairly accurate description of the flow pattern, the attenuation of rotation, and the velocity values in different sections by a mathematical model. A comparison of the use of the SST turbulence model to the effects of streamline curvature and system rotation is presented. The application of the RANS approach using the adjusted SST turbulence model allows quickly determining all the main characteristics of the swirl flow using medium-power computers. An analysis of the operation mode of confusers of different angles on a swirling flow shows that an increase in the average speed and pressure at the outlet from the confuser with a large angle leads to the possibility of saving most of the swirling flow energy and using it in the future.

Keywords

Swirling flows Confuser Numerical simulation Turbulence Submerged flow 

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Copyright information

© The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Kharkiv National Automobile and Highway UniversityKharkivUkraine
  2. 2.Sumy State UniversitySumyUkraine
  3. 3.National Technical University “Kharkiv Polytechnic Institute”KharkivUkraine

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