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Modeling of two-phase flow in porous media with heat generation

Taherzadeh, M ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ijmultiphaseflow.2014.10.013
  3. Publisher: Elsevier Ltd , 2015
  4. Abstract:
  5. The main purpose of this work is investigation of coolability of a boiling debris bed. The main governing equations are derived using volume averaging technique. From this technique some specific interfacial areas between phases are appeared and proper relations for modeling these areas are proposed. Using these specific areas, a modification for the Tung/Dhir model in the annular flow regime is proposed. The proposed modification is validated and the agreements with experimental data are good. Finally, governing equations and relations are implemented in the THERMOUS program to model two-phase flow in the debris bed in the axisymmetric cylindrical coordinate. Two typical configurations including flat and mounted beds are considered and the main physical phenomena during boiling of water in the debris bed are studied. Comparing the results with the one-dimensional analysis shows higher specific power of the bed
  6. Keywords:
  7. Two-phase flow ; Debris ; Friction ; Porous materials ; Cylindrical coordinates ; Debris bed ; Dry-out ; Friction force ; One-dimensional analysis ; Specific interfacial area ; Volume averaging techniques
  8. Source: International Journal of Multiphase Flow ; Volume 69 , March , 2015 , Pages 115-127 ; 03019322 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0301932214002018