正交分解法在脉动壁压研究中的应用

Application of Proper Orthogonal Decomposition to Wall Pressure Fluctuatin

对水流脉动壁压的研究,不仅有助于了解水流内部的紊动结构,而且具有重要的工程应用价值。介绍了正交分解法在脉动壁压研究中的应用。通过实验获得了某消力池导墙的脉动壁压信号,并将正交分解方法引入到脉动壁压的研究中。计算结果表明脉动壁压可用正交分解进行描述,而且对其进行低阶近似颇为有效。

The study of wall-pressure fluctuation is not only the important part in the theory of turbulence, but also the actual need in engineering. The method of proper orthogonal decomposition was used in the investigation of wall-pressure fluctuation. The result makes it clear that wall-pressure fluctuation can be described with the method of proper orthogonal decomposition, and the low order approximation is very efficient.