| 万五一,练继建,崔广涛.分段低压输水管系的水力振荡特性[J].水利学报,2003,34(12):0034-0039 |
| 分段低压输水管系的水力振荡特性 |
| Oscillation characteristics of stepped low pressurized piping systems |
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| DOI： |
| 中文关键词: 泥沙沉降 阻力系数 球度系数 形状系数 球体绕流解 |
| 英文关键词: stepped low pressurized piping system U shape tube hydraulic oscillation surge well |
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| 中文摘要: |
| 分段低压输水管是一种结构相对简单，采用分段降低水头的自流有压引水结构。本文从U形管的水面振动特性出发，对分段低压输水管系的水力振荡特性进行分析和推导，建立了分段低压输水管系输水单元的水力振动方程和固有水力振荡频率计算公式，分析了水流振荡向下游传播的共振特性，提出了控制水力振荡的结构优化方法。采用特征线计算方法对某具体工程在流量调节过程中的水力振荡过程进行数值模拟，验证了理论推导和结构优化的合理性。 |
| 英文摘要: |
| The stepped low presurized piping system is a new type gravity water supply system, which is simple in structure. In this paper, the hydraulic oscillation of this type of system is analyzed based on the principle of hydraulic oscillation in a U shape tube. the oscillation equation in established and the formula for calculating the oscillation frequency is deduced. The optimal design method for controlling the hydraulic oscillation to prevent from resonance is proposed. An example is presented for illustration of the optimal design method. |
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