轴流风机叶片防磨的多学科设计优化研究

Multidisciplinary Design Optimization Research of Wear Resistance in Axial Fan Blades

本研究应用多学科优化理论,采用coarse-to-fine优化流程,结合计算流体动力学、有限元以及磨损预测,研究建立了具有一般通用性的叶轮机械多学科防磨优化系统,采用某一工业风机进行了实例考核,详细对比研究了优化前后设计的气动与磨损性能,揭示了磨损提高的机理。研究结果表明,本研究所提出的MDO优化系统具有优秀的鲁棒性和高效性,能够有效应用于叶轮机械在考虑气动与强度性能的同时提高耐磨性。

This paper presents both a wear resistance design approach via Multidisciplinary Design Optimization（MDO） for turbo machinery to improve the wear resistance of blades, and it＇s application for the design of an industrial axial fan. The MDO method integrates the coarse-to-fine optimization method, CFD, Finite Element method and SPE which reveal improvement mechanisms in wear resistant performance.This provides a comparative analysis of the aerodynamics and wear resistance of the blade before and after optimization. In conclusion, it can be shown that the proposed approach gives further opportunity for turbo machinery wear resistance designs under the consideration of aerodynamics and strength.