Particle method of characteristics (PMOC) for unsteady pipe flow

Yao-Hsin Hwang; Ho-Shuenn Huang; Nien-Mien Chung; Pai-Yi Wang

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Particle method of characteristics (PMOC) for unsteady pipe flow

机译：不稳定管道流动的特征粒子法（PMOC）

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A novel particle method of characteristics (PMOC) to simulate unsteady pipe flows is introduced and validated in the present study. Contrary to the conventional method of characteristics (MOC), the present formulation is built by reallocating the computational nodes along the characteristic lines. Both the right- and left-running characteristics are accurately traced and imitated with their associated computational particles. The annoying numerical inconveniences in the fixed-grid arrangement due to incompatible Courant-Friedrichs-Lewy (CFL) condition by repeating solution interpolations is effectively eliminated. Special particles with dual states satisfying the Rankine-Hugoniot relations are deliberately imposed to emulate the shock structure. Efficacy of this formulation is verified by solving some benchmark problems with significant transient effects in pipe flows. Computational results of piezometric head and flow velocity are meticulously compared with available analytical solutions. It is concluded that the proposed PMOC will be a useful tool to replicate transient phenomena in pipe flows.

机译：在本研究中引入并验证了一种新颖的特征粒子法（PMOC），用于模拟非稳态管道流动。与传统的特征方法（MOC）相反，通过沿特征线重新分配计算节点来构建本公式。正确地跟踪了左右行驶特性，并用它们相关的计算粒子进行了模拟。有效地消除了由于重复求解插值而产生的不相容Courant-Friedrichs-Lewy（CFL）条件导致的固定网格布置中令人讨厌的数值不便。刻意施加具有满足兰金-休格尼特关系的双态的特殊粒子，以模拟激波结构。通过解决一些在管道流动中具有明显瞬态效应的基准问题，可以验证该配方的有效性。将测压头和流速的计算结果与可用的分析解决方案进行了精心比较。结论是，提出的PMOC将是复制管道流动中瞬态现象的有用工具。

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来源
《Journal of Hydroinformatics》 |2013年第3期|780-797|共18页
作者
Yao-Hsin Hwang; Ho-Shuenn Huang; Nien-Mien Chung; Pai-Yi Wang;
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作者单位

Department of Marine Engineering,National Kaohsiung Marine University,Kaohsiung 80543,Taiwan;

Department of Naval Architecture and Ocean Engineering,National Kaohsiung Marine University,Kaohsiung 81143,Taiwan;

Taiwan Power Research Institute,Taiwan Power Company,Taipei 23847,Taiwan;

Taiwan Power Research Institute,Taiwan Power Company,Taipei 23847,Taiwan;

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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种 eng
中图分类
关键词
particle method of characteristics; Rankine-Hugoniot relation; shock particle; transient pipe flow;

机译：特征粒子法Rankine-Hugoniot关系;冲击粒子瞬态管道流量;

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2. Unsteady Elbow Pipe Flow to Develop a Flow-Induced Vibration Evaluation Methodology for Japan Sodium-Cooled Fast Reactor [J] . Hidemasa YAMANO, Masaaki TANAKA, Takahiro MURAKAMI, Journal of nuclear science and technology . 2011,第4期

机译：非定常弯管流量为日本钠冷快堆开发基于流动的振动评估方法
3. Lie-group method for unsteady flows in a semi-infinite expanding or contracting pipe with injection or suction through a porous wall [J] . Boutros YZ, Abd-el-Malek MB, Badran NA, Journal of Computational and Applied Mathematics . 2006,第2期

机译：李群法在半无限膨胀或收缩管道中通过多孔壁进行注入或抽吸的非稳态流动
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机译：MEW方法计算具有可变横截面管道中的不稳定1-D可压缩流。应用于I. C.发动机的进气管和排气管的流动
5. EXTENSION OF THE PSEUDO CHARACTERISTIC METHOD OF LINES TO SIMULATION OF MULTIPHASE FLOW IN PIPES AND PIPE NETWORKS. [D] . WANG, YI-ZUN. 1987

机译：线的伪特征方法的扩展，以模拟管道和管网中的多相流动。
6. Theoretical Prediction Method for Erosion Damage of Horizontal Pipe by Suspended Particles in Liquid–Solid Flows [O] . Guoqiang Liu, Wenzhe Zhang, Liang Zhang, 2021

机译：液体固体流动悬浮颗粒的水平管腐蚀损伤的理论预测方法
7. Particle method of characteristics (PMOC) for unsteady pipe flow [O] . Yao-Hsin Hwang, Ho-Shuenn Huang, Nien-Mien Chung, 2012

机译：不稳定管流的特性（PMOC）颗粒方法
8. Application of the Method of Characteristics to Predict Attenuation in Unsteady Partially-Filled Pipe Flow [R] . Swaffield, J. 1982

机译：特征线法在非稳定部分填充管流衰减预测中的应用

Particle method of characteristics (PMOC) for unsteady pipe flow

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