CANCELLED - Single & Two-Phase Flow in Safety Devices - VKI LS

Date: Monday 06 June 2011 to Thursday 09 June 2011

Location : von Karman Institute for Fluid Dynamics, Rhode-St-Genèse, Belgium
Contact : This email address is being protected from spambots. You need JavaScript enabled to view it., phone: + 32 2 359 96 04, fax: +32 2 359 96 00





The objective of this 4-day lecture series is to provide a state-of-the art of flow modeling of control and safety devices with peculiar emphasis given to safety relief valves. Proper sizing and design of such equipment requires knowledge of flow and thermodynamic conditions upstream and downstream of the device, physical and thermal properties of the fluid(s). It is worth noting that two-phase flow is now frequently encountered in various relief processes. This situation becomes considerably more complex due to the large number of variables associated with the interaction of the phases and possible flashing occurrence.

Experts coming from the scientific, industrial and technological communities will discuss their day-to-day experience in flow testing and CFD simulation exemplifying, nuclear, chemical and cryogenic applications.

The lectures are intended to accommodate attendees of both novice and advanced levels of technical expertise.


Monday 6 June 2011

  • 08:45    Registration
  • 09:15    Welcome, introductory remarks
  • 09:30    Introduction to safety devices
    Dr. S. Chabane, CETIM, France
  • 11:15    Fundamentals of two-phase flows
    Prof. Y. Bartosiewicz, UCL, Belgium
  • 14:00    Modeling of flashing choked flows
    Prof. Y. Bartosiewicz
  • 15:45    Measurements techniques in two-phase flows
    Dr. M. Vetrano, von Karman Institute for Fluid Dynamics
  • 17:00    Reception

Tuesday 7 June 2011

  • 09:00    CFD approach in two-phase flows
    Dr. D. Lakehal, ASCOMP, Switzerland
  • 10:45    CFD approach in two-phase flows (continued)
    Dr. D. Lakehal
  • 14:00    Factors influencing operation and flow caracteristics of direct loaded safety valves
    Pr. V. Dossena, Politecnico di Milano, Italy
  • 15:45    Laboratory tests for the definition of operational and flowing characteristics of SV size ranges, including back pressure service
    Pr. V. Dossena

Wednesday 8 June 2011

  • 09:00    Flow-induced vibration in safety relief valves in incompressible or compressible flows
    Dr. S. Chabane, CETIM, France
  • 10:45    Sizing of two-phase control and safety valves applying the non-equilibrium HNE-DS model   
    Prof. J. Schmidt, Karlsruhe Institute of Technology, Germany
  • 14:00    Application to the HNE-DS model
    Prof. J. Schmidt
  • 15:45    Aerodynamic interactions between the Vulcain 2 LOX turbine and the upstream valve
    Prof. G. Paniagua, von Karman Institute, Belgium

Thursday 9 June 2011

  • 09:00    Experimental study of air-water flow in safety relief valves
    Mr. V. Kourakos, von Karman Institute, Belgium
  • 10:45    Case study of calculation of the flow rate of a pressure relief valve for the sub-cooled case
    Mr. S.M.  Egan, Rhodia , France
  • 14:00    Guide to when two phase flow can be expected in a pressure relief valve
    Mr. S.M.  Egan
  • 15:45    Valves applications to space
    Dr. V. Thomas, Techspace Aero, Belgium
  • 17:00    End of Lecture Series

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June 6-9, 2011


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