Numerical Simulation And Design Of Hydrodynamic Torque Converter Blade System Based On Virtual Prototyping Technology

Based on the virtual prototyping technology and 3-D flow field theory,the intemal flow field of YJ380 model hydrodynamic torque converter(HTC)is analyzed numerically by software Pro-E and FLUENT;And effect of blade angle of outlet on performances of HTC is studied in the paper.The following is the main contents:In the first chapter,the developing situation of HTC in home and abroad is stateded;And then the Virtual Prototyping Technology and 3-D flow field theory that is basic theory and important tool to analyze HTC are expatiated;The composition and operation principle of HTC are dealed with;The main contents,purpose and significance of the research in the paper are introduced as well.The basic theory of CFD and the analysing step of numerical simulation are introduced in the second chapter.The governing equation,the basic principle of the finite volume method and technology of creating grid discretely are explanated;The assumption,simplify and flow chart for numerical simulation are put forword.Taking the YJ380 as prototype,the numerical simulation of interior flow field for pump, turbine and stator with different blade outlet single are carried out.The distribution of pressure in the inlet,outlet,pressure side and suction side of blades for impellers at representative working status and blade outlet single are analyszed.It is concluded that variation of outlet single for blade affects on the performances of the hydrodynamic torque convert evidently.The numerical results of pump is compared with the test ones and the consistency shows that this numerical simulation of 3-D flow field based on the virtual prototyping technology is reliable method and it is useful tool to analyze flow field in practical application.In order to improve design level and performance of HTC,summary and expectation are given at the last.