New method for predicting the transition position of airfoil surface based on XGBoost model

被引：0
|
作者：
Li, Changlin [1 ]
Tong, Xin [1 ]
Yu, Peixiang [1 ,2 ]
Ouyang, Hua [1 ,2 ]
机构：
[1] School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai
[2] Engineering Research Center of Gas Turbine and Civil Aero Engine, Ministry of Education, Shanghai Jiao Tong University, Shanghai
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2024年 / 39卷 / 11期
关键词：
boundary layer; controlled diffusion airfoil; prediction of transition position; separation-induced transition; XGBoost model;
D O I：
10.13224/j.cnki.jasp.20220210
中图分类号：
学科分类号：
摘要：
For identification of the transition position on the blade surface, a turbulence/non-turbulence interface identification method based on XGBoost model without specified thresholds was introduced. According to this method, the high-precision flow field around the controlled diffusion airfoil was solved by the large eddy simulation method. Considering the intermittent flow, the proportions of laminar flow state at different positions in the boundary layer at different times were calculated by the machine learning method, and the transition position was obtained according to the change rate in the chord length direction of the airfoil. The method was verified by investigating different influencing parameters. Compared with traditional criteria, this method could accurately predict transition positions without subjective judgment. In addition, using the present method, it was found that for a controlled diffusion airfoil, the boundary layer transition depended not only on the turbulent energy, but also on the size of vortices and the space distribution feature. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
引用
收藏
相关论文
共 23 条
  • [1] BISSET D K, HUNT J C R，, ROGERS M M., The turbulent/nonturbulent interface bounding a far wake, Journal of Fluid Mechanics, 451, pp. 383-410, (2002)
  • [2] WESTERWEEL J，, FUKUSHIMA C，, PEDERSEN J M，, Et al., Mechanics of the turbulent-nonturbulent interface of a jet, Physical Review Letters, 95, 17, (2005)
  • [3] JOCKSCH A，, KLEISER L., Growth of turbulent spots in high-speed boundary layers on a flat plate, International Journal of Heat and Fluid Flow, 29, 6, pp. 1543-1557, (2008)
  • [4] DA SILVA C B，, PEREIRA J C F., Invariants of the velocity-gradient， rate-of-strain， and rate-of-rotation tensors across the turbulent/ nonturbulent interface in jets, Physics of Fluids, 20, 5, pp. 551011-5510118, (2008)
  • [5] BORRELL G，, JIMENEZ J., Properties of the turbulent/non-turbulent interface in boundary layers, Journal of Fluid Mechanics, 801, pp. 554-596, (2016)
  • [6] LEE Jin, ZAKI T A., Detection algorithm for turbulent interfaces and large-scale structures in intermittent flows, Computers & Fluids, 175, pp. 142-158, (2018)
  • [7] DE SILVA C M，, PHILIP J，, CHAUHAN K，, Et al., Multiscale geometry and scaling of the turbulent-nonturbulent interface in high Reynolds number boundary layers, Physical Review Letters, 111, 4, (2013)
  • [8] MENTER F R，, LANGTRY R B，, LIKKI S R，, Et al., A correlation-based transition model using local variables: Part Ⅰ model formulation, Journal of Turbomachinery, 128, 3, (2006)
  • [9] ANAND R K，, BOERSMA B J，, AGRAWAL A., Detection of turbulent/non-turbulent interface for an axisymmetric turbulent jet: evaluation of known criteria and proposal of a new criterion, Experiments in Fluids, 47, 6, pp. 995-1007, (2009)
  • [10] MCMULLAN W A，, PAGE G J., Large eddy simulation of a controlled-diffusion cascade blade at varying flow inlet angles, Proceedings of the ASME Turbo Expo 2009: Power for Land， Sea，and Air, pp. 453-466, (2009)
123