基于CFD新型组合式双射流喷嘴流场仿真研究

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• 英文论文题名：Simulation study on novel combined type of double-jet nozzle flow field based on CFD
• 论文作者：李啸峰 ; 吴阚 ; 李海成 ; 李清忠 ; 王玲
• 英文论文作者：Li Xiaofeng ; Wu Kan ; Li Haicheng
• 年：2017
• 作者机构：大庆油田有限责任公司采油工程研究院;
• 论文关键词：双射流 ; 喷嘴 ; 等速核速度 ; 流场仿真 ; 湍动能
• 英文论文关键词：double-jet ; nozzle ; potential core velocity ; flow field simulation ; turbulent kinetic energy
• 会议召开时间：2017-06-01
• 会议录名称：《采油工程文集》2017年第2辑
• 英文会议录名称：Oil Production Engineering
• 语种：中文
• 分类号：TE921.2
• 学会代码：DQGY
• 学会名称：大庆油田有限责任公司采油工程研究院
• 页数：7
• 文件大小：2577k
• 原文格式：D

摘要

在厚层定点深穿透水平钻孔技术中,为了提高普通喷嘴连续射流水功率利用率和破岩效率,设计了新型组合式双射流喷嘴。将普通喷嘴连续射流改为"旋转射流+连续射流"双射流喷嘴,利用Solidworks软件完成新型组合式双射流喷嘴计算域的建模,并结合ANSYS软件实现了喷嘴流场的仿真。计算结果表明:在60MPa工作压力下,新型组合式双射流喷嘴圆柱端等速核速度达到最大,即160m/s;螺旋边缘孔在螺旋导流槽作用下,使喷嘴出口处流体最大切向速度达到60m/s;同时在喷嘴中心孔出口处产生较大的湍动能,其值最大达到45J。仿真结果说明,新型组合式双射流喷嘴在圆锥中心孔射流和螺旋边缘孔射流共同作用下,将对岩石的破碎产生更大的切削力,在径向方向上对岩石将造成更大范围的破碎。
In the technology of fixed-point deep penetration horizontal drilling in thick layer, the novel combined type of double-jet nozzle was designed, in order to improve the water power utilization rate and the rock breaking efficiency of continuous jet in common nozzle. The continuous jet in common nozzle was changed into double-jet nozzle of "combination swirling jet with continuous jet". By using Solidworks software, the model of calculation domain for the novel combined type of double-jet nozzle has been completed to realize the flow field simulation of nozzles combined the ANSYS software. The calculation results showed that the potential core velocity at the cylinder end of novel combined double-jet nozzle can reach the maximum of 160m/s under the working pressure of 60MPa;the fluid maximum tangential velocity is up to 60m/s at nozzle exit by the spiral edge hole under the action of spiral groove; and the maximum value of turbulent kinetic energy is 45 J at the exit of the nozzle center hole. The simulation results showed that novel combined type of double-jet nozzle could produce greater cutting force to break the rock under the combination of the center hole jet and the spiral edge hole jet, and break a larger area of rock in the radial direction.

引文

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