Based On Three-dimension Dynamic Mesh The Fluid-structure Interaction Characteristics Of High-temperature Steam Pressurized Component Study

With the development of mechanical manufacturing industry, high temperature and high pressure steam need to be used in many engineering and production practice.But the traditional booster pump with pressure and temperature can’t meet the needs of social production now, so it is urgent need to develop a new type of hightemperature steam booster pump. However, high-temperature steam pressurized component are key components to realize high temperature and pressure steam booster pump which has important influence on the stability of the work of high temperature steam booster pump. In order to solve the high temperature steam turbo booster failure problems of the prototype, it needs to conduct further studies on hightemperature steam pressurized component.This paper establishes a three-dimensional fluid model of the high temperature steam and three-dimensional model of high temperature steam pressurization components using the three-dimensional dynamic mesh technology. Sweeping method and tetrahedron method are applied to generate the mesh for fluid model and high temperature steam pressurized component model. Three-dimensional dynamic mesh technology is used to numerically simulate the compression stroke of high temperature steam pressure. From the analysis of the color nephogram, it can be obtained that it is in the last phase of compression stroke that the pressure and temperature reach higher and this is most likely to be the main cause of the failure of high temperature steam booster pump.To solve the problems above, an unidirectional fluid solid coupling simulation analysis method is applied to study the influence of high temperature and pressure loads on the deformation of high-temperature steam pressurized component by respectively loading high temperature steam pressure loads and temperature loads in different time into the three-dimensional model of high temperature steampressurized components. It can be concluded that the thermal deformation is the main factor that causes the failure of the booster, which lays a theoretical foundation for material selection. Finally, the deformation field simulations of three kinds of materials, the steel structure, ZL107 and TC4 in high temperature steam pressurization situation are respectively studied and their simulation results are compared and analyzed.Finally, in order to further verify the rationality of the selection of materials, I adopt the two-way fluid structure coupling numerical simulation method, the material for high temperature steam pressure components of TC4 two-way fluid structure coupling simulation, and the simulation data with one-way fluid-solid coupling simulation data are compared, for high-temperature steam turbo component selection further laying the theoretical basis.In this paper, it doesn’t only simulate a three-dimensional moving grid for hightemperature steam booster compression stroke, but also provides the basis for the selection of materials for high-temperature steam pressurized component, which has a significance on the development of high-temperature steam booster.