Abstract: 3-dimension modeling and numerical simulation for nozzle arrangement of a controlled cooling equipment was carried out by the Fluent finite element simulation software to obtain a uniform axial temperature field.The effects of some controlled cooling parameters,such as nozzle diameter,nozzle number,nozzle rows,the inlet speed and direction of nozzles,on the cooling uniformity of the pipe wall were analyzed.The results show that the nozzle diameter,the layout,and the inlet direction of nozzles have relatively great influence on the cooling uniformity of the pipe wall,but the inlet velocity of nozzles affects only the cooling rate and has little or no effect on the cooling uniformity of the pipe wall.