Modeling the mass velocity and pressure drop of forced vapor-liquid flow through a granular bed
The paper considers the approaches frequently used to model pressure drop in a granular layer. These are a model of a hydraulic circuit element, a Lockcart–Martinelli model, and a generalization of the Darcy–Forchheimer model. A new model, representing a generalization of the gas dynamics equations to a two-phase flow, is proposed. The results of the considered models verification by two groups of experimental data obtained at different facilities are presented. The experiments employed granular beds with a height of 50 mm, 100 mm, 200 mm, 250 mm, 355 mm made of steel balls with a diameter of 2 mm, 2.123 mm and 4 mm. The experimental data cover the following range of operational parameters: inlet pressure from 0.6 to 15.3 MPa, flow quality at the inlet from 0.002 to 0.300, and mass velocity from 150 to 1200 kg/m2s. The results of the pressure drop calculation based on the known mass velocity and the inverse calculation of mass velocity from the known pressure drop have shown the advantages of the proposed new model, which has an analytical solution. © 2020 Elsevier Ltd
Библиографическая ссылка Tairov E., Khan P. Modeling the mass velocity and pressure drop of forced vapor-liquid flow through a granular bed // International Journal of Multiphase Flow. Vol.133. ID: 103466. 2020. DOI: 10.1016/j.ijmultiphaseflow.2020.103466
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