Abstract
A water and air mixture model is validated via experimental data in a newly rebuild laboratory apparatus where the main variable compared was the pressure gradient along the pipe in a bubble flow pattern. The experimental apparatus presents a constant circular cross-section of 0.032 m of diameter and 3.815 m of length. The flow set-up was ascendant co-current and 30 pairs of superficial velocities of liquid-gas were measured. A numerical solution, using the mixture model, was implemented to predict the pressure gradient and void fraction of the two-phase flow for a one dimensional, steady-state, isothermal, no phase transition, no mass transfer and constant specific mass and viscosity conditions. The pressure gradient numerical results of the mixture model agreed with experimental data within an relative error envelope inferior to 2%.
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Matoba, G.K., Ribeiro, L.F., Garcia, V., Suguimoto, F.K. (2020). Two-Phase Bubble Flow: Experimental and Numerical Challenges. In: Monteiro, J., et al. INCREaSE 2019. INCREaSE 2019. Springer, Cham. https://doi.org/10.1007/978-3-030-30938-1_57
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