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本文研究了纳米TiO_2颗粒对碳酸丙烯酯(PC)吸收CO_2的影响,并基于输运机理、微对流机理,建立了三维非稳态多粒子双机理模型对实验结果进行预测。研究表明:纳米流体的黏度随着颗粒纳米颗粒粒径越小,增强因子越大固含量的增大而增大;增强因子随着颗粒固含量的增大先增大后减小,存在最佳固含量;颗粒固含量较小时,相同固含量,纳米颗粒粒径越小,增强因子越大;颗粒固含量较大时,相同固含量,纳米颗粒粒径越大,增强因子越大;随着纳米颗粒粒径的增大,最佳固含量逐渐增大;模型计算值与实验值符合的较好,模型可以预测实验结果。
In this paper, the effects of nano-TiO_2 particles on the CO2 absorption of propylene carbonate (PC) were studied. Based on the transport mechanism and the mechanism of micro-convection, a three-dimensional multi-particle unsteady multi-particle model was established to predict the experimental results. The results show that the viscosity of nanofluids increases with the increase of the solid content of the nano-particles and the increase of the solid content of the nano-particles. The enhancement factor increases first and then decreases with the increase of the solid content, Solid content; the smaller the solid content, the same solid content, the smaller the particle size of nanoparticles, the larger the enhancement factor; the larger the solid content of particles, the same solid content, the larger the particle size of nanoparticles, the greater the enhancement factor; The particle size of nano-particles increases, the optimum solid content increases gradually. The calculated value of the model is in good agreement with the experimental data. The model can predict the experimental results.