γ-Re_θ转捩模型的标定与应用

Implementation and caliberation of γ-Re_θ transition model

简单介绍了γ-Reθ转捩模型,并在mbns3d内部软件上实现。应用零压力梯度平板试验数据对关联函数进行了标定,得到了一组关联函数。对A-aerofoil迎角13.1°及13.3°进行了验证计算,结果表明该模型可以比较准确模拟转捩效应,提高了升力、阻力计算精度。随后研究了NLR7301两段翼型,通过应用环量修正及转捩模型提高了阻力计算精度,阻力最大误差控制到4%以内。

In this paper, theγ-Reθ trans CFD code mbns3d. The zero pressure grad model. A series of the correlation function ition model is presented briefly and implemented in the ＂In house＂ ient flat plate test data are adopted for calibrating the transition are obtained. The test case of A-aerofoil at 13.1 and 13.3 angles of attack are calculated, the results indicate that the transition model is capable of simulating the transition effect accurately. And the accuracy of lift and drag are increased. Subsequently, the two element airfoil of NLR7301 is studied. The transition model and vortex correction are applied to increase the drag prediction accuracy, and the max drag coefficient deviation is controlled fewer than 4 percent in comparison with experi- ments.