Ads System Targets The Multi-physics Analysis

The whole concern in the nuclear energy development field is mainly focused on the study of the safety,efficiency and how to deal with nuclear radioactivity waste. Almost all research is divided into two ways. The one way is to improve on those existed reactor for the better safety,the other is to carry on the fully new design for the best result. Accelerator Driven sub-critical reactor belongs to the latter ways. Because of sub-critical safety,fully using of the thorium-uranium resources and efficiency disposal high-radioactivity waste,this research has become the hot pot.The target studied in this paper is one of the most important components in the ADS. coupling the two innovative fields in the nuclear scientific and technological circles that are accelerator and sub-critical reactor. The physical function of this part is be as the neutron source,accepting the medium or high energy proton,breeding spallation reaction,arising the self-sustaining nuclear fission and generating the power.This thesis initiates a study about the thermal-hydraulic research for the target structure and optimization. Investigating the target research work at home and abroad,we acquire their design gist and technological developing route in the according fields. Comparing the numerical -calculational methodology of multi-physical such as finite difference method,boundary element method,disperse element method and finite element method,finite element method is the predominant methodology,we have appliance of this method to calculate fluid field thermal field and stress field. After comparing all kinds of universal finite element software,we choose this excellent multi-physical ANSYS software as our analyzing method. It is the multi-physical calculating process using FLOTRAN module structure analysis module and coupling field analyzing module. Three kinds of target structure being studied most frequently are as calculated object. A series of results are achieved such as fluid field thermal field pressure field and stress field.Those results show that sphere target has better heat exchange and convenient fluid structure and that cone target is easy to accepting neutron and has the convergent stress. Taking into account the thermal-hydraulic and physics discipline,solid target choose sphere structure but liquid target still should further consider of material study . There are many difficulties in target calculate curse,such as choosing physical parameter of target material,how to input the corresponding parameter and choosing coolant parameter etc. In the next studying,we need further consider power's distributing function with target structure and target material parameter diversification for irradiate damage.With the further development of ADS. system optimize work are finished. Target structure had been confirmed. This method can be applied in the checked calculation in target section.