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Numerical Experiment on Two-Phase Flow Behaviors in Tube Bundle Geometry for Different Mixtures

[+] Author Affiliations
William Benguigui, Enrico Deri, Jerome Lavieville, Stephane Mimouni, Elisabeth Longatte

EDF, Chatou, France

Paper No. PVP2017-65349, pp. V004T04A037; 10 pages
doi:10.1115/PVP2017-65349
From:
  • ASME 2017 Pressure Vessels and Piping Conference
  • Volume 4: Fluid-Structure Interaction
  • Waikoloa, Hawaii, USA, July 16–20, 2017
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5797-7
  • Copyright © 2017 by ASME

abstract

Since steam generators are used, many experiments have been performed to understand the different phenomena appearing in them. One of the main issues to reproduce a similar flow on a reduced-scale experiment is the choice of the two-phase mixture. Air/water and boiling freon are among the most used two-phase flow mixtures. In the present document, a finite-volume CFD code dedicated to multi-phase flows based on a two-fluid approach (extended to n) is used to compare two mixtures numerically. Thanks to two experiments, an air/water horizontal channel and a freon/freon inclined tube bundle, a first part highlights the validity of the two-phase flow modeling. Then, based on inlet superficial velocities from both experiments, a numerical experiment is performed by using each mixture on the other experiment. Void fraction profiles and two-phase flow regimes are compared in order to exhibit the behaviors of both mixtures in a steam generator like tube bundle. Results turn out to provide useful information (void fraction profiles mainly) about mixture properties, and near-wall loads in the vicinity of cylinders are investigated.

Copyright © 2017 by ASME

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