| PROPER ORTHOGONAL DECOMPOSITION AND LOW-DIMENSIONAL APPROXIMATION OF WALL PRESSURE FLUCTUATION |
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| 作者姓名： | LIUShi-he DUANHong-dong LUJing |
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| 作者单位： | [1]SchoolofWaterResourceandHydropower,WuhanUniversity,Wuhan430072,China [2]WaterResourcesandHydropowerPlanningandDesignGeneralInstitute,MWR,Beijing100011,China |
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| 摘 要： | Wall pressure fluctuation is one of the source terms which result in the vibration of hydraulic structures. To consider both the space and time correlation of the pressure field, the method of proper orthogonal decomposition and lowdimensional approximation were used here to describe the pressure signals of the turbulent boundary layer, the apron of the stilling pond and the vertically impinging jet.
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| 关 键 词： | 墙压波动 湍流 正常正交沉积 低维近似 流体人工变化 |
PROPER ORTHOGONAL DECOMPOSITION AND LOW-DIMENSIONAL APPROXIMATION OF WALL PRESSURE FLUCTUATION |
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| LIUShi-he DUANHong-dong LUJing.PROPER ORTHOGONAL DECOMPOSITION AND LOW-DIMENSIONAL APPROXIMATION OF WALL PRESSURE FLUCTUATION[J].Journal of Hydrodynamics,2004,16(6):669-674. |
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| Authors: | LIU Shi-he School of Water Resource and Hydropower Wuhan University Wuhan China DUAN Hong-dong Water Resources and Hydropower Planning and Design General Institute MWR Beijing China LU Jing School of Water Resource and Hydropower Wuhan University Wuhan China |
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| Affiliation: | LIU Shi-he School of Water Resource and Hydropower,Wuhan University,Wuhan 430072,China,DUAN Hong-dong Water Resources and Hydropower Planning and Design General Institute,MWR,Beijing 100011,China LU Jing School of Water Resource and Hydropower,Wuhan University,Wuhan 430072,China |
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| Abstract: | Wall pressure fluctuation is one of the source terms which result in the vibration of hydraulic structures. To consider both the space and time correlation of the pressure field, the method of proper orthogonal decomposition and low-dimensional approximation were used here to describe the pressure signals of the turbulent boundary layer, the apron of the stilling pond and the vertically impinging jet. |
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| Keywords: | wall pressure fluctuation turbulence |
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