Optimization design and verification of airfoil for reversible subway fan
As a fundamental component of the blade,the reversible airfoil plays an important role in the overall performance of the fan.Using the R18 reversible airfoil with good performance as the initial airfoil,an optimized airfoil is obtained through the airfoil optimization method.Numeca software is used to calculate the aerodynamic performance of the blades constructed with R18 airfoil,and the reliability of this numerical method is verified by comparing it with the data from a standard fan test bench.Then,two blade models are constructed using two types of airfoils and their aerodynamic performance is calculated by using Numeca software to evaluate the design effectiveness of optimized airfoil.The research results indicate that within the designed range of the angle of attack,the lift and drag characteristics of the optimized airfoil are higher than the R 18 airfoil;under the designed operation conditions,the optimized airfoil has increased the total pressure of the fan by 5.43%and the efficiency by 0.905%.In conclusion,the airfoil optimization method can indeed improve the aerodynamic performance of the designed reversible subway fan.
reversible airfoilairfoil optimizationangle of attackaerodynamic performancereversible subway fan