Direct numerical simulations of turbulent thermal boundary layers subjected to adverse streamwise pressure gradients
Direct numerical simulations of turbulent thermal boundary layers subjected to adverse streamwise pressure gradients
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DOI：
10.1063/1.4820816
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发表时间：
2013-09
影响因子：
4.6
通讯作者：
G. Araya;L. Castillo
中科院分区：
文献类型：
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作者：
G. Araya;L. Castillo
针对附连流动，提出了一种在流动压力梯度下描述空间发展边界层中湍流热流入信息的新方法。该方法在动量厚度雷诺数(Reθ)高达3000时的零压力梯度和逆压力梯度的热边界层直接数值模拟中得到了验证。湍流热数据是基于Araya等人提出的动态多尺度方法生成的。[空间演化流动中湍流流入边界条件的动态多尺度方法》，J.流体力学。670,581-605(2011)]，对其进行了扩展以包括本文中的热场模拟。该方法基于Lund、Wu和Squires开发的原始重新定标-再循环方法[“为空间发展边界层模拟生成湍流流入数据”，J.Comput。太棒了。140,233-258(1998)]用于ZPG流量。等温墙被认为是用于...
An innovative method for prescribing turbulent thermal inflow information in spatially developing boundary layers under streamwise pressure gradients is introduced for attached flows. The approach is tested and validated in a suite of Direct Numerical Simulations (DNS) of thermal boundary layers for zero (ZPG) and adverse (APG) pressure gradients with momentum thickness Reynolds numbers (Reθ) up to 3000. The turbulent thermal data are generated based on the dynamic multi-scale approach proposed by Araya et al. [“A dynamic multi-scale approach for turbulent inflow boundary conditions in spatially evolving flows,” J. Fluid Mech. 670, 581–605 (2011)], which is extended to include thermal field simulations in the present article. The approach is based on the original rescaling-recycling method developed by Lund, Wu, and Squires [“Generation of turbulent inflow data for spatially developing boundary layer simulations,” J. Comput. Phys. 140, 233–258 (1998)] for ZPG flows. Isothermal walls are considered for the...