CAJ | 학술논문

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。
관도압강시빙장관도수송계통중중요삼수，획지빙장관도압강대우지도빙장관도수송유착중요의의。위획득빙장관도설계과정중유효적압강계산방법，이수평관내빙장적비균질성류동과정위연구대상，종고액상간적상호작용인기능량모산적각도출발，삼조 Molerus사장비균질성량상류류동압강계산방법，결합빙장자신적물성특정，발전료괄우빙장비균질성관류적고액상간상대속도도，총결출빙장비균질성류동압강적량상첩가산법。결과표명，재빙입자농도종3%지30%적범위내기우분상첩가산법소획득적조력계산결과여문헌실험치문합량호，여차동시，차산법환능구진일보양화출고상압강소점빈액수빙입자농도급류속적변화관계。
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.