Theoretical And Experimental Research On Design Method Of Hydrodynamic Torque Converter Based On CFD

Hydrodynamic Torque Convert is one of the most important components of the transmission systems which are equipped in the vehicles and construction machineries. The power system with the Hydrodynamic Torque Convert can make the vehicle and construction machinery start calmly, change their speed and torque steplessly and continuously. Due to above, the Hydrodynamic Torque Convert is widely used in the vehicle and construction machinery and its performances improving the dynamic features and economical. To increase the performances of the Hydrodynamic Torque Convert (HTC) and decrease the consumes of energy sources are important for the fuel economy, especially, today the energy sources are defect in all of world. In order to increase HTC performances and the efficiency, the advanced technique of Computational Fluid Dynamics (CFD) has been used to calculate the internal flow of HTC, and then factors deciding the efficiency of HTC are found out by analyzing the calculated results. The calculated flow field also is tested by LDA and PIV. The experimental data is analyzed and compared with the numerical results. Based on the numerical simulation and experimental research, the advanced theories and methods of the HTC have been developed. The dissertation mainly includes the following parts.Numerical Computational of the Internal FlowFirstly, basic control equations of fluid mechanics are explained, the turbulent models widely used and the numerical computational of turbulent flows are systematically introduced. Then, there is an introduction to the calculation procedures of CFD. The process of discrete solutions from the basic theory of...