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Li D, Marchisio D. Implementation of CHyQMOM in OpenFOAM for the simulation of non-equilibrium gas-particle flows under one-way and two-way coupling. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2021.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Maluta F, Buffo A, Marchisio D, Montante G, Paglianti A, Vanni M. Numerical and Experimental Analysis of the Daughter Distribution in Liquid‐Liquid Stirred Tanks. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202100237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Francesco Maluta
- Università di Bologna Department of Industrial Chemistry “Toso Montanari” Viale Risorgimento 4 40136 Bologna Italy
| | - Antonio Buffo
- Politecnico di Torino Department of Applied Science and Technology Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - Daniele Marchisio
- Politecnico di Torino Department of Applied Science and Technology Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - Giuseppina Montante
- Università di Bologna Department of Industrial Chemistry “Toso Montanari” Viale Risorgimento 4 40136 Bologna Italy
| | - Alessandro Paglianti
- Università di Bologna Department of Civil, Chemical, Environmental and Materials Engineering Via Terracini 28 40131 Bologna Italy
| | - Marco Vanni
- Politecnico di Torino Department of Applied Science and Technology Corso Duca degli Abruzzi 24 10129 Torino Italy
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Investigation on Bubble Diameter Distribution in Upward Flow by the Two-Fluid and Multi-Fluid Models. ENERGIES 2021. [DOI: 10.3390/en14185776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Bubble flow can be simulated by the two-fluid model and the multi-fluid model based on the Eulerian method. In this paper, the gas phase was further divided into several groups of dispersed phases according to the diameter by using the Eulerian-Eulerian (E-E) multi-fluid model. The diameters of bubbles in each group were considered to be the same, and their distributions were reorganized according to a specific probability density function. The experimental data of two kinds of bubble flow with different characteristics were used to verify the model. With the help of the open-source CFD software, OpenFOAM-7.x (OpenFOAM-7.0, produced by OpenFOAM foundation, Reading, England), the influences of the group number, the probability distribution function, and the parameters of different bubble diameters on the calculation results were studied. Meanwhile, the numerical simulation results were compared with the two-fluid model and the experimental data. The results show that for the bubble flow with the unimodal distribution, both the multi-fluid model and the two-fluid model can obtain the distribution of gas volume fraction along the pipe radius. The calculation results of the multi-fluid model agree with the experimental data, while those of the two-fluid model differ greatly from the experimental data, which verifies the advantage of the multi-fluid model in calculating the distribution of gas volume fraction in the polydisperse bubble flow. Meanwhile, the multi-fluid model can be used to accurately predict the distribution of the parameters of each phase of the bubble flow if the reasonable bubble diameter distribution is provided and the appropriate interphase force calculation model is determined.
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