流固耦合方法对气携旋流分离的数值模拟  

Numerical Simulation for Gas-Injected Cyclone Based on Fluid-Solid Coupling Algorithm

作　　者：李鑫[1] 魏燕杰[1] 李国一[1] 

机构地区：[1]交通运输部天津水运工程科学研究所水路交通环境保护技术通行业重点实验室,天津300456

出　　处：《绿色科技》2015年第4期279-283,共5页Journal of Green Science and Technology

基　　金：交通运输部建设科技项目(编号:2013328224540)资助

摘　　要：指出了气携式液液旋流器是港区小型化、船载化洗舱、压仓含油废水预处理的关键设备。采用流固耦合数值模拟方法再现压缩机进气、油水旋流与设备本体的整体气浮—旋流—分离耦合计算模型,对其核心部件微孔旋流套管的构型、孔径、内外压差及腔内流场分布进行了三维数值模拟,得到了微孔旋流腔内汽、水、油三相的流场分布,合理确定了注气腔气—水平衡分压、溢流比和微孔孔径,并模拟了压缩机、潜水泵正常工况下进气、进水、出水、油污溢流的流量、流速波动范围,为该设备的一体化构型设计和加工选材提供了参考数据。Gas-injected liquid-liquid hydro-cyclone is a key device in the miniaturization of the port,washing tank of the ship and pretreatment of oily wastewater.Adopting the numerical simulation of fluid-solid coupling,the article reappears the flotation-cyclone separation coupling calculation model for compressor＇s air inflow,oil-water cyclone and the apparatus.The article also make a 3-D numerical simulation of micro-porous cyclone drive pipe＇s configuration,aperture,internal and external differential pressure and flow field distribution of chamber,which is the core block of gas-injected liquid-liquid hydro-cyclone.Through the simulation,the article gets the field distribution of steam,water and oil phase flow inside micro-porous cyclone chamber.Meanwhile,the gas injection cavity,equilibrium partial pressure of gas water,overflow ratio and micro-porous aperture are rationally determined by the simulation method.In addition,it simulates the compressor and submersible pump＇s water inflow and outflow,air inflow,discharge and velocity fluctuation of oil overflow under normal condition,which provide reference data for the integrated design of configuration,selection of materials and processing of the apparatus.

关 键 词：旋流器 气浮 溢流 流固耦合 数值模拟 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]