Statistics and TKE Budgets of Beta = 0, 1, 39 Turbulent Boundary Layer DNS

The statistical properties are presented for the direct numerical simulation of a self-similar adverse pressure gradient (APG) turbulent boundary layer (TBL) at the verge of separation. The APG TBL has a momentum thickness-based Reynolds number range from 570 to 13, 800, with a self-similar region from 10, 000 to 12, 300. Within this domain the average non-dimensional pressure gradient parameter beta = 39. These properties are compared to those of a beta = 0 and 1 case. The statistical properties and KE budgets of these three flows in the domain of interest are provided as ASCII files.Properties:Kinematic Viscosity = 0.000285714Density = 1DATAFILES:ASCII files:ZPG_Beta0.datmildAPG_Beta1.datstrongAPG_Beta39.datZPG_Beta0_KEbudgets.datmildAPG_Beta1_KEbudgets.datstrongAPG_Beta39_KEbudgets.datPlots:uu_reynoldsstress.pdfuv_reynoldsstress.pdfvv_reynoldsstress.pdfww_reynoldsstress.pdfKE_budgets_Beta39_figshare.pdfReferences:Kitsios, V., Sekimoto, A., Atkinson, C., Sillero, J. A., Borrell, G., Gungor, A. G., et al. (2017). Direct numerical simulation of a self-similar adverse pressure gradient turbulent boundary layer at the verge of separation. Journal of Fluid Mechanics, 829, 392–419. http://doi.org/10.1017/jfm.2017.549Kitsios, V., Atkinson, C., Sillero, J. A., Borrell, G., Gungor, A. G., Jiménez, J., & Soria, J. (2016). Direct numerical simulation of a self-similar adverse pressure gradient turbulent boundary layer. International Journal of Heat and Fluid Flow, 61, 129–136. http://doi.org/10.1016/j.ijheatfluidflow.2016.04.008

本数据集呈现了处于分离临界点的自相似逆压梯度（Adverse Pressure Gradient, APG）湍流边界层（Turbulent Boundary Layer, TBL）直接数值模拟的统计特性。该逆压梯度湍流边界层的基于动量厚度的雷诺数范围为570至13800，其自相似区域跨度为10000至12300。在该区域内，无量纲压力梯度参数β的平均值为39。
本研究将上述统计特性与β=0及β=1工况下的结果进行了对比。三类流动在目标区域内的统计特性及动能（Kinetic Energy, KE）收支平衡结果均以ASCII文件形式提供。
【物性参数】
运动粘度=0.000285714
密度=1
【数据文件】
均为ASCII格式文件：ZPG_Beta0.dat、mildAPG_Beta1.dat、strongAPG_Beta39.dat、ZPG_Beta0_KEbudgets.dat、mildAPG_Beta1_KEbudgets.dat、strongAPG_Beta39_KEbudgets.dat
【绘图文件】
uu_reynoldsstress.pdf、uv_reynoldsstress.pdf、vv_reynoldsstress.pdf、ww_reynoldsstress.pdf、KE_budgets_Beta39_figshare.pdf
【参考文献】
1. Kitsios, V., Sekimoto, A., Atkinson, C., Sillero, J. A., Borrell, G., Gungor, A. G., 等. (2017). 处于分离临界点的自相似逆压梯度湍流边界层的直接数值模拟. 流体力学杂志, 829, 392—419. https://doi.org/10.1017/jfm.2017.549
2. Kitsios, V., Atkinson, C., Sillero, J. A., Borrell, G., Gungor, A. G., Jiménez, J., & Soria, J. (2016). 自相似逆压梯度湍流边界层的直接数值模拟. 国际热与流体流动杂志, 61, 129—136. https://doi.org/10.1017/j.ijheatfluidflow.2016.04.008