The Analysis And Optimization Of Flow Field And Strength Calculation In Turbocharge On CFD And ANSYS

In response to the theme of "Green Development,Energy Saving and Emission Reduction," the State has conducted research on how to achieve the sustainable development of internal combustion engines and the future transformation and upgrading.The turbocharger technology must be upgraded to comply with stringent fuel consumption regulations.Therefore,researchers have also begun to focus on how to make turbocharger work more efficient.Among the turbochargers,the turbine is one of the most critical parts,how its performance will have a direct impact on the efficiency of the equipment and affect the performance of the engine.The dissertation selects the marine axial turbocharger as the object of exploration.Based on this,the turbine strength calculation and internal flow field analysis are carried out.The paper uses the SoildWorks three-dimensional modeling software to construct the relevant geometric model,and uses Hypermesh software to complete the division of the grid unit,thereby obtaining the calculation model;the three conditions of the maximum,running-in and calibration speed Next,Using Fluent to analyze the internal flow field.After the analysis,a structural improvement plan using 22-and 26-blade turbines instead of 24-blade turbines was proposed.Under the same conditions,the CFD analysis was carried out for the scheme and the simulation results were compared.Finally,it was found that the 22-blade turbine was more effective in improving the performance of the marine axial turbocharger.Relying on Ansys software,to improve the structure analysis of the front and rear turbines,to ensure the operation of the turbocharger,and to set different speeds,to observe the comprehensive deformation map and model stress,the position of the maximum force point When searching,and then relying on the maximum speed,the maximum turbine front and rear blade turbine stress must be kept within the allowable force to balance the strength and flow field,and it is clear that the 22-blade turbine used in the original model is more feasible.