水平直管内冰浆流动压降分相叠加算法  

Phase Splitting Algorithm for Flowing Pressure Drop of Ice Slurry in Horizontal Straight Pipe

作　　者：王树刚[1] 吕燕捷 王继红[1] 张腾飞[1] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《高校化学工程学报》2015年第1期43-48,共6页Journal of Chemical Engineering of Chinese Universities

基　　金：中央高校基本科研业务费专项资金项目;中国博士后科学基金(2014M560209)

摘　　要：管道压降是冰浆管道输送系统中重要参数,获知冰浆管道压降对于指导冰浆管道输送有着重要意义。为获得冰浆管道设计过程中有效的压降计算方法,以水平管内冰浆的非均质性流动过程为研究对象,从固液相间的相互作用引起能量耗散的角度出发,参照Molerus砂浆非均质性两相流流动压降计算方法,结合冰浆自身的物性特征,发展了适于冰浆非均质性管流的固液相间相对速度图,总结出冰浆非均质性流动压降的两相叠加算法。结果表明,在冰粒子浓度从3%至30%的范围内基于分相叠加算法所获得的阻力计算结果与文献实验值吻合良好,与此同时,此算法还能够进一步量化出固相压降所占份额随冰粒子浓度及流速的变化关系。The pressure drop of ice slurry pipe flow is an important parameter in ice slurry pipeline design. A modified method for pressure drop determination of the heterogeneous ice slurry pipe flow is developed to meet the need of industrial projects. Based on the theory of solid-liquid two phase flow which is proposed by Molerus in 1981, the additional pressure drop aroused by ice particles can be treated as a result of the energy assumption caused by the friction between ice particles and fluid. Considering the physical properties of ice slurry, the chart of relative velocity between ice particles and liquid was presented. Thus the total pressure drop can be regarded as the sum of the liquid part and the solid one. It turns out that the calculation results are in good agreement with the experimental data when the ice particle concentration varies from 3% to 30%. Furthermore, the algorithm can also be used to illustrate phases interaction and the proportion of each phase that have contributed to the total pressure drop under different conditions.

关 键 词：冰浆 两相流 流动压降 分相叠加算法 

分 类 号：O359[理学—流体力学]