射流清管器等效压降系数模型的建立及分析验证

发布时间：2018-03-05 13:00

本文选题：射流清管器　切入点：等效压降系数　出处：《中国海上油气》2017年05期 　论文类型：期刊论文

【摘要】：通过对射流清管过程进行动量和能量平衡分析,建立了等效压降系数计算模型,并利用CFD软件模拟计算了相同运行工况下的等效压降系数,分析验证了等效压降系数与清管器旁通率和气体雷诺数之间的内在关系。研究表明,射流清管器等效压降系数随旁通率的增加呈现微弱减小而后快速增长的趋势,同一旁通率下等效压降系数几乎不随射流气体雷诺数变化而变化;射流清管器结构中的突扩部分对旁通压降的贡献最大,比重接近70%。本文方法计算结果与CFD模拟结果的偏差在6.4%以内,吻合度较高,表明应用本文建立的模型可以较好地计算射流清管器等效压降系数,以此作为射流清管器动态模拟的重要输入参数。本文研究成果对优化射流清管器的设计及对射流清管器模型的修正具有重要的意义。
[Abstract]:By analyzing the momentum and energy balance of the jet pipe cleaning process, the equivalent pressure drop coefficient calculation model is established, and the equivalent pressure drop coefficient under the same operating condition is simulated by using CFD software. The relationship between the equivalent pressure drop coefficient and the bypass rate of the pipe-cleaner and the gas Reynolds number is verified. The research shows that the equivalent pressure drop coefficient of the jet pipe-cleaner decreases slightly with the increase of bypass ratio and then increases rapidly. Under the same bypass rate, the equivalent pressure drop coefficient almost does not change with the change of jet gas Reynolds number, and the sudden expansion part of the jet pipe cleaner contributes most to the bypass pressure drop. The deviation between the calculated results of this method and that of CFD simulation is within 6.4%, which indicates that the equivalent pressure drop coefficient of the jet pipe cleaner can be well calculated by using the model established in this paper. As an important input parameter for the dynamic simulation of the jet pipe cleaner, the research results in this paper are of great significance to the optimization of the design of the jet pipe cleaner and the modification of the model of the jet pipe cleaner.
【作者单位】：中国石油大学(华东)油气储运安全省级重点实验室;中海油研究总院;
【基金】：“十三五”国家科技重大专项“深水天然气凝析液控砂与射流清管技术(编号:2016ZX05028-004-003)”部分研究成果
【分类号】：TE832.36

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