CFD Analysis Of The Flow Characteristics Of Axial Blood Pump

In recent years, with the rapid development of computer technology, CFD has been in a variety of areas of rapid development and wide application. In biomedical engineering, many scholars have applied CFD-assisted design of artificial organs and optimization. Use numerical simulation to guide the design of artificial organs has become an important research direction. Means of numerical simulation, on the one hand can save financial and material resources and time; On the other hand it shows that it is difficult to draw from the test flow and mass transfer details.From the flow of the basic equations, the author elaborated on the work of CFD steps, technical features, and introduced the three-dimensional turbulence model and three two-equation model of the application. This paper studies the application of CFD software Fluent axis leaves the two groups of blood flow pump. Mainly the following aspects:1. An overview of the current study all types of blood pump research results at home and abroad, a comprehensive study describes the basic method of flow field.2. With reference to the design principle of axial flow pump lift law and the basic skills of blood pump design parameters of the requirements of the analog value of the number of pump design process.3. Introduced the phenomenon of turbulence and compare the three types of turbulence model, using three-dimensional modeling software Pro / E to form on the leaves, described the process of physical modeling. And then the three-dimensional entities into the conduct of Gambit mesh. And gave a briefing on mesh generation technology, the application of the two groups were calculated Fluent leaves the over-current, calculated by the internal blood pump velocity field, pressure field, turbulent kinetic energy and dissipation rate.4. Introduced the turbulence and the development of computational fluid dynamics and its application in the design of artificial organ application, the calculation model for the application of CFD software Fluent rotating impeller region of three-dimensional turbulent flow field numerical simulation to determine the solution of regional and the introduction of boundary conditions, the use of RNG k-εturbulence model, using finite volume method for the control of discrete equations, and then solved using SIMPLE algorithm, and calculating the results of the analysis and research.