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考虑水合物浆相间相互作用、粒径分布、固相黏度、最大内相堆积率等基本物性,基于EulerEuler双流体模型,建立描述管道内水合物浆流动的数值模型,并对水合物浆的粒径特性、阻力特性进行分析。结果表明:与Mulhe粒径模型相比,Camargo粒径模型考虑了水合物聚结体间的相互作用,粒径模拟值与实验值更为接近;颗粒动力学模型对水合物浆湍流流动时颗粒间剪切作用的刻画较为准确,但在描述水合物浆层流流动时误差较大,而基于Brinkman方程、Ostwald方程的黏度模型因与水合物体积分数、剪切速率间存在耦合关系,对水合物浆湍流、层流流动阻力特性的预测效果较为理想。建立的数值模型可以为水合物浆安全流动研究及工程应用提供支持。
Based on EulerEuler two-fluid model, a numerical model describing the flow of hydrate slurry in the pipeline is established considering basic properties of hydrate slurry phase interaction, particle size distribution, solid phase viscosity and maximum internal phase deposition rate. Diameter characteristics, resistance characteristics of the analysis. The results show that compared with the Mulhe particle size model, the Camargo particle size model considers the interaction between hydrate aggregates and the particle size simulation value is closer to the experimental value. The particle dynamics model is very sensitive to the particles However, based on the Brinkman equation, the viscosity model of Ostwald equation has a coupling relationship with the volume fraction of hydrate and the shear rate, The predicting effect of turbulent flow and laminar flow resistance is ideal. The established numerical model can provide support for the safe flow research and engineering application of hydrate slurry.