Numerical Evaluation of Tandem Rotor for Highly Loaded Transonic Fan

摘要

transonic tandem rotor was designed for highly loaded fan at a corrected tip speed of 381 m/s and another conventional rotor was designed as a baseline to evaluate the loading superiority of tandem rotor with 3D numerical simulation. The aft blade solidity and its impact on total loading level were studied in depth. The result indicates that compared with the conventional rotor which produced a total pressure ratio of 2.0 and loading coefficient of 0.42, tandem rotor has potential to achieve higher loading level, and has favorable aerodynamic performance in a wide range of loading coefficient 0.55～0.68.