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Commercial CFD Codes (CFX, STAR-CD)

Main applications
- Cooling capability of the beam window of various spallation targets
- Sub-channel analysis
- Design optimisation of the active part of spallation targets
- Heat transfer analysis under specific flow conditions
- Thermal-hydraulic behavior in fuel assemblies
- Numerical studies for KALLA and other ongoing experiments

Computational fluid dynamic (CFD) codes has been applied to analyze the thermal-hydraulic behavior in the active part of a spallation target. Figure 1 shows the temperature and velocity profiles in the lower part of the XADS target under steady state conditions with the maximum beam current of 6 mA. The maximum window temperature occurs in the centre of the window and is about 510oC. The maximum velocity occurs inside the funnel and is about 1.2 m/s. Both the maximum window temperature and the maximum LBE velocity are well below the design limits, which are 525°C and 2.0 m/s, respectively.

 XADS target

Figure 1: Temperature and velocity profile in the lower
part of the XADS target
Main references

  1. A. Batta, M. Daubner, X. Cheng, Investigation on turbulent mixing process in MEGAPIE target configurations, Jahrestagung Kerntechnik, May 25-27, 2004, Düsseldorf, paper 203
  2. A. Batta, N.I. Tak, G. Grötzbach, X. Cheng, CFD analysis of the flow behaviour in a spallation target, Jahrestagung Kerntechnik, 20-22. 05. 2003, Berlin