Regenerative flow compressors or blowers are rotodynamic machines with the ability to produce high head at low flow rates. This paper describes shape optimization of the aerofoil type blades for the regenerative compressor. A regenerative compressor with accessible experimental data was modeled as a base geometry. A three-dimensional numerical analysis combined with response surface method has been performed to determine the optimized shape. The polynomial-based RSM having a second order was applied. Isothermal efficiency and Pressure coefficient were selected as objective functions. The RSM is adopted with two design variables comprising blade inlet and blade outlet angles. The Preliminary numerical simulations for obtaining the optimum number of blades revealed that the highest efficiency occurs for the pitch to chord ratio (solidity) of 0.36. For isothermal efficiency, the optimal positions of β₁ and β₂ occurred at 33.8° and 50.7°, respectively. The results of sensitivity analysis showed that both design variables have the same sensitivity on the efficiency but the outlet angle (β₂) is more impactful on the pressure coefficient as compared to that of the inlet blade angle (β₁). Throughout the optimization, the isothermal efficiency for the optimized model at the design flow coefficient was enhanced up to 3.17% compared to the reference one. In addition, the pressure coefficient for the optimal RFC was successfully increased up to 8% compared with that of the reference model.

再生流压缩机或鼓风机是能够在低流速下产生高扬程的旋转动力机器。本文介绍了蓄热式压气机翼型叶片的形状优化。具有可访问实验数据的再生压缩机被建模为基本几何形状。已经进行了结合响应面法的三维数值分析来确定优化的形状。应用了具有二阶多项式的 RSM。等温效率和压力系数被选为目标函数。RSM 采用两个设计变量，包括叶片入口角和叶片出口角。用于获得最佳叶片数量的初步数值模拟表明，当桨距弦比（坚固度）为 0.36 时效率最高。β ₁和β _{2 分别}出现在 33.8° 和 50.7° 处。灵敏度分析的结果表明，两种设计变量对效率相同的灵敏度，但出口角（β ₂）相比于所述入口叶片角度的（是在压力系数更具影响β ₁）。在整个优化过程中，与参考模型相比，优化模型在设计流量系数下的等温效率提高了 3.17%。此外，与参考模型相比，最佳 RFC 的压力系数成功提高了 8%。