论文标题
使用合成湍流产生的平板上的湍流边界层的直接数值模拟
Direct Numerical Simulation of a Turbulent Boundary Layer on a Flat Plate Using Synthetic Turbulence Generation
论文作者
论文摘要
平板上的湍流边界层通过不可压缩的Navier-Stokes方程的直接数值模拟（DNS）计算，作为合成湍流发生器（STG）流入边界条件的测试床。入口动量厚度雷诺数约为1,000。该研究提供了STG在5至7个边界层厚度下在边界条件下游的5到7个边界层厚度中发展准确湍流的能力的验证。还测试的是稳定方案变化对边界层发展的影响。此外，使用稳定的有限元方法研究了开发区域和下游流量所需的网格分辨率。
The turbulent boundary layer over a flat plate is computed by direct numerical simulation (DNS) of the incompressible Navier-Stokes equations as a test bed for a synthetic turbulence generator (STG) inflow boundary condition. The inlet momentum thickness Reynolds number is approximately 1,000. The study provides validation of the ability of the STG to develop accurate turbulence in 5 to 7 boundary layer thicknesses downstream of the boundary condition. Also tested was the effect of changes in the stabilization scheme on the development of the boundary layer. Moreover, the grid resolution required for both the development region and the downstream flow is investigated when using a stabilized finite element method.
