混砂车搅拌罐流场和功率的数值模拟.pdf

CHINA PETROLEUM MACHINERY
2014年第42卷第2期
油气田开发工程
混砂车搅拌罐流场和功率的数值模拟
万正洲华剑殷瑱赵飞郑准
(长江大学机槭工程学院
摘要:为研究含砂体积分数、转速对混砂车搅拌装置流场和玏率消耗的影响,指导混砂车的
工况优化,依据计算流体力学理论,应用 Fluent软件对混砂车搅拌的流场和功耗进行了数值模拟。
定量研究了搅拌流场和转逑的关系以及搅拌功率、转速与含砂体积分数的关系。研究结果表明,
适当提高转速,可以使固液悬浮搅拌更均匀,搅拌效果更好;但随着转速的提高,功率会呈非线
性关系不断增加,搅拌效果的加强以功率増加为代价;堕着含砂体积分数的增加,功率会相应地
増大,但增大的幅度较小,平均每增大10%的含砂体积分数,功率仅增大0.37kW。
关键词:混砂车;搅拌罐;功率;流场分析; fluent;数值模拟
中图分类号:TE934文献标识码:Adoi:10.3969/isn.1001-4578.2014.02.020
Numerical Simulation of the Flow Field and
Power of the Blender Mixing Tank
Wan Zhengzhou Hua Jian Yin Zhen Zhao Fei Zheng Zhun
School of Mechanical Engineering, Yangtze University)
Abstract: To study the effects of sand volume fraction and rotating velocity on the flow field and power of the
mixing device of blender truck and guide the optimization of the operating condition of the truck, the Fluent soft-
ware was applied to conduct a numerical simulation of the mixing flow field and power consumption of blender truck
according to computational luid dynamics theory. The relation of mixing ow field to rotating velocity, and the rela
tion between mixing power and rotating velocity to sand volume fraction were studied through quantitative analy-
sis. The research findings show that proper increase of velocity can make solid-liquid suspension more even and the
mixing effect better. But with the increase of velocity, power will increase in a nonlinear relation. The strengthening
of mixing effect is at the cost of power increase. With the increase of sand volume fraction, power will increase cor
respondingly, but with limited amplitude. In other words, when sand volume fraction increases by 10%, power will
increase only by 0.37 kw
Key words: blender truck mixing tank; power; flow field analysis; Fluent; numerical simulation
裂机组的重要设备,其混合效果将直接影响压裂过
程的效率和成功与压製效果-3)。与国外先进水平
相比,我国的混砂车搅拌装置消耗的功率普遍偏
目前我国大多数陆上油田已经进入开发的中晩高,这样大大増加了混砂所需的功耗。因此,
期阶段,为了避免油井生产层渗透率的降低而造成研究混砂车混合效果和功率规律,对提高压裂质量
油田产量的大幅下降,各大油田普遍采用水力压裂和节能降耗具有重要的意义。笔者运用 Fluent软
作为保持稳产高产的主要措施-2。混砂车作为压件,采用CFD计算流体力学方法对混砂车的流场
基金项目:长江大学国家级大学生创新创业训练项目“混砂车节能型搅拌装置结构参数实验”(2012324);高等学校博士学科点专
项科研基金博导类资助课题(20124220110001)