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Theoretical Analysis on Hydraulic Transient Resulted by Sudden Increase of Inlet Pressure for Laminar Pipeline Flow
Author(s): DENG Songsheng, ZHOU Shaoqi, LIAO Zhenfang, QIU Zhengyang, ZENG Shunpeng
Pages: 614-
620
Year: 2004
Issue:
6
Journal: APPLIED MATHEMATICS AND MECHANICS
Keyword: 层流; 管流; 水力瞬变; 理论解;
Abstract: 研究了层流状态下管道入口压力突然升高引起的水力瞬变过程,建立了瞬态压力分布的偏微分方程和初边值条件,用分离变量法求得了压力的理论解.根据压力和流量间的约束关系,得到了关于流量的偏微分方程和初边值条件,用分离变量求得了瞬变过程流量分布理论解.最后,用特征线法(MOC)对该问题进行了数值求解,理论解和数值解吻合很好.
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