基于转捩点位置的动态失速模型数值建模方法研究

通过实验可得到翼型动态失速的相关数据,但是由于多数的动态失速计算方法使用全湍流模型或半经验转捩模型,数值计算一直没有得到与实验结果非常吻合的计算结果.提出了基于转捩点位置的动态失速模型数值建模方法来提高数值计算的准确性,通过使用Winsock网络协议实现FLUENT和MATLAB之间的数据传输,再使用曲线拟合与梯度下降法实现转捩点位置的优化计算,最终通过得到的转捩点的位置信息使得计算结果更加准确,为其他研究人员将转捩点作为动态失速理论分析的一个因素提供良好的数据基础.

Method to Study Airfoil Dynamic Stall Based on Transition Point

Researchers have already got experimental data for airfoil dynamic stall. For the weakness of turbulent Model and presented transition model, data from calculation cannot fit data from experiment well. We find a method to improve the accuracy of calculation to airfoil dynamic stall by using transition point. Use Winsock network communication to connect FLUENT and MATLAB, get transition point information by curve-fitting and gradient decent method, then improve accuracy of calculation with transition point information. The transition point information will help researchers to analyze physical schematic of airfoil dynamic stall.