空气动力学学报2016，Vol.34Issue(4)：461-467,475,8.DOI:10.7638/kqdlxxb-2015.0200
Pω增强型k-ω湍流模型在三角翼旋涡流动的应用
Application of k-ω with Pω enhancer turbulence model to delta wing vortical flows
张冬云 1李喜乐 2杨永 3张强3
作者信息
- 1. 中国商用飞机有限责任公司上海飞机设计研究院，上海 201210
- 2. 中国航天空气动力技术研究院，北京 100074
- 3. 西北工业大学翼型、叶栅空气动力学国家重点实验室，陕西 西安 710072
- 折叠
摘要
Abstract
The production of k-ω within standard Wilcox k-ω turbulence model is dependent on the mean strain-rate of the flow and does not take the rotation rate into account,resulting in the prediction of a weak vortex which can’t be sustained and diffuses quickly.A suitable sensor is defined to distinguish between shear layers and vortex cores,to increase the production of the dissipation rate (ω)within regions of highly rotational flow.k-ω with Pω enhancer turbulence model is applied to RANS solver for structured grid.Subsonic and transonic flows around a 65 o swept leading edge delta wing are simulated numerically.The computational results are compared with detailed experimental data obtained from a series of wind tunnel tests in the NTF at NASA and DNW-TWG at DLR.The comparisons show that the k-ω with Pω enhancer turbulence model produces better results when it comes to capturing the vortex core,the critical angle of attack and the position of vortex breakdown at subsonic and transonic flows,thus is suitable for simulating the vortical flow around delta wing.关键词
k-ω 湍流模型/生成项/三角翼/跨声速/临界迎角/涡破裂Key words
k-ω turbulence model/production/delta wing/transonic/critical angle of attack/vortex breakdown分类
航空航天引用本文复制引用
张冬云,李喜乐,杨永,张强..Pω增强型k-ω湍流模型在三角翼旋涡流动的应用[J].空气动力学学报,2016,34(4):461-467,475,8.
