论文部分内容阅读
建立了NACA0012翼型积冰气动数据库,探讨了一种基于多维空间广义体积的积冰气动系数估算方法。结合皮尔逊积矩相关系数分析各积冰参数与气动系数的相关性,通过忽略相关性较小的飞行因素降低模型维度,在保证精度的前提下提高计算效率。最后对多组积冰参数进行算例验证,并与试验结果和经验公式估算结果进行对比,表明该估算方法具有较高的精度和可靠性,可以有效应用于各种积冰参数下气动系数的估算。
The NACA0012 airfoil aerodynamic database was established and an estimation method of ice accretion coefficient based on generalized volume in multi-dimensional space was discussed. The correlation coefficient of each ice accretion with the aerodynamic coefficient was analyzed according to the Pearson product moment correlation coefficient. The model dimension was reduced by neglecting the less relevant flight factors, and the computational efficiency was improved with the premise of ensuring accuracy. Finally, the multi-group parameters of ice accretion are validated and compared with the experimental and empirical results. The results show that the method has high accuracy and reliability and can be effectively applied to the aerodynamic coefficients of various ice accretion parameters Estimated.