基于B样条和萤火虫算法的测压孔布置优化研究

The Application of B-spline Fitting Based on Firefly Algorithm to the Optimization of Pressure Measurement Holes

风洞实验昂贵,实验前有必要进行数值仿真以预测减少盲目性.采用B样条拟合方法对CFD实验的翼型表面压力分布的大量数据进行拟合,并在测压孔数一定的情况下使用萤火虫算法寻找最小二乘意义上的测压点位置.结果表明,优化后的测压点拟合的曲线与原来大量数据拟合的曲线比较接近,同时一种在高维非标准单纯形内使用萤火虫算法的新方法被发现.

Wind tunnel experiments are expensive,so numerical simulation should be carried out to minimize the blindness before the experiments.The extensive data of airfoil surface pressure distribution from CFD was fitted by means of B-spline fitting method and the optimal locations(least square approximation)of pressure measurement holes are determined in the case where the holes’number is consistant,using firefly algorithm method.Simulation results show that the curve fitted by the holes calculated is close to the one fitted by the original data fromCFD.Moreover,a new application method of firefly algorithm in high dimension simplex is found.