高空低雷诺数吸附式压气机叶型耦合优化设计

为了探究高空低雷诺数条件下吸附式叶型的气动设计特性,利用人工蜂群算法对低雷诺数吸附式叶型进行优化设计,该设计方法可以将叶型和抽吸方案进行耦合优化.并且对高空低雷诺数吸附式叶型耦合优化设计的必要性进行了论证.研究结果表明:在地面条件下设计的具有较好性能的吸附式叶型,在高空低雷诺数条件下,性能有可能会显著下降,针对高空低雷诺数条件的吸附式叶型设计有很大必要性;针对研究对象,在高空低雷诺数条件下优化设计后总压损失降低了32%,静压升提高了0.01,并且优化设计后在地面条件下的性能也略有提升;在高空低雷诺数条件下,适当地增加吸附式叶型前段的负荷,通过抽吸来控制层流分离泡的设计效果最为理想;优化后得到的最佳抽吸位置位于层流分离泡中心区域. 

Coupling optimization design for aspirated compressor airfoil with low Reynolds number in high altitude

Aim at researching the aerodynamic design characteristics of the aspirated airfoil with low Reynolds number in high altitude, artificial bee colony algorithm(ABC) was used to optimize the aspirated airfoil in the condition of low Reynolds number, and this design method coupled the airfoil and aspirated scheme in the process of optimization design. And the necessity of the coupling optimized design was demonstrated.Research results show that: the performance of the aspirated airfoil designed in the condition of the ground would decrease significantly in the condition of low Reynolds number, and the coupling optimized design in the condition of low Reynolds number is necessary.The coupling optimized design can reduce the total pressure loss by 32%, and increase the static pressure ratio by 0.01 in the condition of low Reynolds number.And the performance of the aspirated airfoil could also be promoted in the condition of the ground.The design is optimum by improving the load in the forepart of the aspirated airfoil appropriately, and controlling the laminar bubble by aspiration.And the optimal aspirated location is in the center of the laminar bubble.