基于CFD水环发生器结构优化研究

Structure optimization of water ring generator based on CFD

水环输送在稠油输送方面表现出非常好的应用前景。本文提出一种单入口形式的稠油水环发生器,运用Solidworks对水环发生器物理模型进行重新设计和优化,设计出三种不同间隙单入口水环发生器,基于计算流体动力学(CFD)方法进行数值模拟研究。研究结果表明,单入口稠油水环发生器在间隙尺寸为1.3 mm时产生的水环有着较高的稳定性、维持时间最长,使水环输送的效果达到最佳。水环发生器间隙尺寸的增大,影响环状水层,进而影响压降数值。保持进口油流速度不变,适当降低进口水流速度,可以提高水环输送稠油效率。研究结果为稠油水环输送提供了一种研究方法,对实际工程有一定参考价值。

Water ring transportation shows a very good application prospect in heavy oil transportation.In this paper,a single inlet water ring generator for heavy oil was proposed.Solidworks was used to redesign and optimize the physical model of the water ring generator,and three kinds of single inlet water ring generators with different gaps were designed.Numerical simulation was carried out based on computational fluid dynamics(CFD)method.The results show that,when the gap size of single inlet heavy oil water ring generator is 1.3 mm,the water ring generated has high stability and the longest maintenance time,so that the water ring transmission effect can achieve the best.The increase of the gap size of the water ring generator will affect the annular water layer and then affect the pressure drop value.The efficiency of water ring transportation of heavy oil can be improved by keeping the inlet oil flow velocity unchanged and reducing the inlet flow velocity appropriately.The research results provide a new research method for heavy oil water ring transportation and have some reference value for practical engineering.