| 苏文献， 郭佳伟， 施卿海.含气水锤弯管动态响应影响因素研究[J].轻工机械,2018,36(1):41-45 |
| 含气水锤弯管动态响应影响因素研究 |
| Analysis of Influence Factors of Dynamic Response of Water Hammer with Gas Elbow |
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| DOI：10.3969/j.issn.1005 2895.2018.01.009 |
| 中文关键词: 含气水锤 弯管 流固耦合 计算流体动力学（CFD） 计算结构动力学（CSD） |
| 英文关键词:water hammer with gas elbow fluid solid coupling CFD(Computational Fluid Dynamics） CSD（Computational Structure Dynamics） |
| 基金项目: |
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| 摘要点击次数: 1101 |
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| 中文摘要: |
| 水锤工况下会产生极大的压力波幅值，不仅干扰管路系统的稳定运行，还可能损坏管路，对管路系统的稳定和安全运行产生巨大危害。以某工程实例为研究对象，借助CFD与CSD结合的流固耦合方法研究含气水锤作用下弯管的动态响应。采用单一变量法，研究水中气体体积分数、管道壁厚、水的初始流速、阀门关闭时间对流体压力、管道上应力及管道振幅的影响。研究表明：初始流速的降低、管道壁厚的增加、阀门关闭时间的延长均会缓解管道的应力状况，降低振动幅度。 |
| 英文摘要: |
| Under the condition of water hammer, great pressure wave amplitude can be generated, which not only interferes with the stable operation of the pipeline system, but also may damage the pipeline and cause great harm to the stability and safe operation of the pipeline system. Taking a certain engineering example as the subject of the study, the dynamic response of elbow under the influence of water hammer with gas through solid liquid coupling method combining CFD and CSD was studied. Single variable method was used to study the influence of gas volume fraction, pipe thickness, the initial flow rate of water, valve closing time on water pressure and stress and amplitude of elbow. It shows that: the reduce of the initial flow rate, the increase of the thickness of the pipe and the valve closing time will relieve the stress of the pipe and reduce the amplitude of the vibration. |
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