摘要
本文利用流动稳定性理论中的共振三波概念,构造湍流平板边界层近壁区对称与非对称单个相干结构的理论模式,采用紧致有限差分及Fourier谱展开相结合的方法,数值计算湍流平板边界层近壁区对称与非对称单个相干结构的演化规律,详细分析了对称与非对称单个相干结构的演化结果,得到了一些有意义的结果。
The idea of resonant triad in the theory of hydrodynamic stability is used to develop the theoretical mode of symmetrical and unsymmetrical single coherent structure in wall region of turbulence boundary layer. In virtue of compact finite-difference and Fourier spectral analysis methods, coherent structure evolution mechanism is numerically simulated. Evolvement of symmetrical and unsymmetrical single coherent structure is investigated in detail, and significant results have been obtained.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2005年第4期442-445,共4页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金资助项目(10272040)
关键词
相干结构
湍流平板边界层
共振三波
coherent structure
turbulence boundary layer
resonant triad
