Based on the ANSYS platform, the numerical simulates of the temperature field in the welding process of the slurry of the slurry steam generator is carried out to obtain the distribution of the temperature field near the weld. The result of the temperature field is gradually applied to the weld to obtain the distribution of welding residual stress at the pipe head. The simulation results can play a very good role in the detection of the residual stress in the welded parts,which not only greatly saving the welding residual stress testing time, but also on the optimization of the welding process played a good reference value.

Based on the bow baffle, the same working conditions are set. The FLUENT software is used to simulate the flow and heat transfer performance of the shell, fluid and heat transfer of the three baffle plates of curved, spherical and arched shapes. and the pressure drop and heat transfer coefficient of the shellandtube heat transfer with three types of plate are compared and analyzed. By comparing the heat transfer performance, pressure, temperature and velocity nephograms of the three plate heat transfer, the reasons for the difference in heat transfer performance are analyzed. The research results can provide reference for the design and heat transfer enhancement of the shell and tube heat transfer baffle, which has certain engineering practical significance.