吸附式压气机转子叶片气动优化设计

进行吸附式压气机转子叶片气动设计方法研究.提出通过迭代设计,应用三维流场计算结果提供S2流面通流计算损失模型,提高了S2流面流场计算精度;将最优化方法与数值模拟技术相结合,建立吸气与型面耦合的回转面二维叶型优化设计和三维叶片优化设计软件;应用所构建的设计软件,进行吸附式压气机转子设计,数值模拟结果表明:该转子在0.86的叶尖载荷下,设计点总压比为1.631、等熵效率为0.965,实现了高气动性能.

Aerodynamic optimization design of an aspirated compressor rotor blade

The aerodynamic design method of aspirated compressor rotor blade was investigated. An iterated design method was adopted by using the results of three-dimensional (3-D) flow field calculations to provide loss calculation model of S₂ flow surface, thus improving S₂ flow surface calculation precision. The optimization design software in which the suction parameters and profile parameters were related to the design of two-dimensional random rotating surface profiles and 3-D blades was developed, by combining the optimization method and numerical simulation method. An aspirated compressor rotor was designed by this software, and the numerical simulation results show that its total pressure ratio is 1.631 and isentropic efficiency is 0.965 at design point under the condition of 0.86 tip blades loading, and high aerodynamic performance is achieved.