Physical and Thermal-hydraulics Coupling Analysis of the LBE Spallation Target of ADS

Abstract

[Introduction] The spallation target is an key device of the acceleration driven sub-critical system (ADS). A suitable spallation target structure was designed through the study of the existing target structure, combining the advantages of each type of targets. [Method] MCNPX code was used to calculate the spallation target, CFD code FLUENT was used to the thermal-hydraulic analysis. In order to check the correctness of the thought and methods of calculation, The others works have been repeated, and the results good accord with the results of the article which been repeated. the thermal-hydraulic behavior of the target designed have been calculated by FLUENT. [Result] Obtaining the results of different inlet velocity、different diameter of beam side and the different intensity of beam on the condition of the same thickness of target window, obtaining the allowable intensity of beam under the different thickness of target windows. The operating condition which meet the criterion of thermal-hydraulic and having enough margins have been organized. The formula of the current intensity which changed with the angle have been deducted. The maximum allowable also been obtained from the result of FLUENT. [Conclusion] The results have great important significance for initial designing of target.

Keywords

• lbe
• spallation target
• acceleration driven sub-critical system
• thermal-hydraulic