| 近壁区Reynolds应力输运方程的理论模型 |
| |
| 引用本文： | 陆利蓬,龚慧敏,张坚强,陈矛章.近壁区Reynolds应力输运方程的理论模型[J].北京航空航天大学学报,2002,28(3):269-271. |
| |
| 作者姓名： | 陆利蓬 龚慧敏 张坚强 陈矛章 |
| |
| 作者单位： | 北京航空航天大学,动力系 |
| |
| 基金项目： | 国家自然科学基金;10172016; |
| |
| 摘 要： | 在湍流边界层的近壁区,采用对称共振三波的理论模型描述相干结构,根据理论模型对Reynolds应力输运方程逐项进行计算和分析,结果与直接数值模拟符合很好.这不仅在理论上有益于对湍流物理机制的了解,而且展现了一种可能性,即根据相干结构的理论知识来改造湍流模型,使之具有更清晰的物理内涵以提高近壁区的预估精度.
|
| 关 键 词： | 湍流边界层 湍流输运 波 Reynolds应力 |
| 文章编号： | 1001-5965(2002)03-0269-03 |
| 收稿时间： | 2000-08-09 |
| 修稿时间： | 2000年8月9日 |
Theoretical Model to Predict Reynolds Stresses in Near Wall Region of a Turbulent Boundary Layer |
| |
| LU Li-peng,GONG Hui-min,ZHANG Jian-qiang,CHEN Ma.Theoretical Model to Predict Reynolds Stresses in Near Wall Region of a Turbulent Boundary Layer[J].Journal of Beijing University of Aeronautics and Astronautics,2002,28(3):269-271. |
| |
| Authors: | LU Li-peng GONG Hui-min ZHANG Jian-qiang CHEN Ma |
| |
| Institution: | Beijing University of Aeronautics and Astronautics, Dept. of Propulsion |
| |
| Abstract: | A symmetric resonant triad theoretical model was proposed to describe the turbulent coherent structures in the near wall region of a turbulent boundary layer. Based on this model, the Reynolds stresses were calculated, their production rates, dissipation rates and transport were evaluated. Consistence of the present results with DNS suggests that the aforementioned theoretical method could reasonably embody the physical mechanism of near wall region turbulence, giving a possibility of modeling the near wall turbulent flow with the knowledge of coherent structures. |
| |
| Keywords: | turbulent boundary layer turbulent transport waves Reynolds stresses |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《北京航空航天大学学报》浏览原始摘要信息 |
| 点击此处可从《北京航空航天大学学报》下载免费的PDF全文 |
