基于油泥射流冲击技术数值模拟
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摘要
针对地下原油储库长期运营之后出现的油泥沉积问题,研究了油泥密度对射流冲击效果的影响。使用ANSYS16.0软件实现地下储库的喷射全流场数值模拟,采用单因素敏感分析法对不同油泥密度下流场进行对比。数值分析结果表明:油泥密度主要影响射流流场中后段的混合情况,对射流初始段的流场混合情况影响较小;流场的混合程度随着油泥密度的减小逐渐增大;油泥流速的增加率与油泥密度成反比;油泥流速的衰减率与油泥密度成正比。
The problem of sludge deposition after long-term operation of underground crude oil cavern is studied, and the effect of sludge density on jet impact is studied. The numerical simulation of the full flow field of the underground storage cavern is carried out using ANSYS 16.0. The flow field of different sludge density is compared by single factor sensitivity analysis. The results of numerical analysis show that the density of sludge mainly affects the mixing of the latter part of the jet flow field, and has little effect on the mixing of the flow field in the initial stage of the jet; the mixing degree of the flow field gradually increases with the decrease of the density of the sludge; The rate of increase is inversely proportional to the density of the sludge; the rate of decay of the sludge flow rate is proportional to the density of the sludge.
The problem of sludge deposition after long-term operation of underground crude oil cavern is studied, and the effect of sludge density on jet impact is studied. The numerical simulation of the full flow field of the underground storage cavern is carried out using ANSYS 16.0. The flow field of different sludge density is compared by single factor sensitivity analysis. The results of numerical analysis show that the density of sludge mainly affects the mixing of the latter part of the jet flow field, and has little effect on the mixing of the flow field in the initial stage of the jet; the mixing degree of the flow field gradually increases with the decrease of the density of the sludge; The rate of increase is inversely proportional to the density of the sludge; the rate of decay of the sludge flow rate is proportional to the density of the sludge.
引文
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[2]陈洪永,金余其,崔洁,等.原油罐底油泥的理化特性研究[J].能源工程,2015(3):38-42.
[3]刘立烨,孟凡力,王卫强,等.搅拌器在原油储罐中的应用与发展[J].当代化工,2015,44(2):386-388.
[4]段亚刚.地下水封储油库的应用与发展[J].山西建筑,2007,33(36):92-93.
[5]皮嘉立,杜娟,吴杰,等.不同喷嘴结构油罐旋转喷射搅拌器数值模拟[J].油气储运,2016,35(4):422-426.
[6]孟凡力,王卫强,王国付,等.射流搅拌流场的数值模拟分析[J].北京石油化工学院学报,2016,24(2):50-56.
[7]余彬彬,杨建勇,刘强.不同转速的油罐旋转喷射搅油器数值模拟[J].自动化与仪器仪表,2015(2):192-194.
[8]王莹莹,仪记敏,王昊.高压射流清罐技术数值模拟分析[J].油气田地面工程,2018,37(4):4-7,12.
[9]范大为.大型储罐旋转射流搅拌器数值模拟[J].油气田地面工程,2016,35(9):4-5,9.
[10]宋学官,蔡林,张华.ANSYS流固耦合分析与工程实例[M].北京:中国水利水电出版社,2012:96-98.
[11]白秋云.旋转喷射搅拌器在原油储罐中的应用[J].中国新技术新产品,2013(3):14.