2D Static droplet simulation with Shan-Chen multiphase Lattice Boltzmann Model

Luis Rojas Solorzano, Bagdagul Dauyeshova, Ernesto Monaco

Research output: Contribution to conferencePaper

Abstract

This paper presents the assessment of the capability of ShanChen (SC) Multiphase Lattice Boltzmann Model (LBM) to accurately predict the liquid-gas interface in multiphase flow. Multiphase flow can be found in various applications, as for example, in CO2 sequestration. One of the challenges for numerical models of such multiphase flows is being able to capture correctly the interface where liquid/gas phase transition happens. In this study, we analyse how parameters such as density ratio and temperature range affect the magnitude of unphysical velocity fields at the interface. The assessment of the model is performed by observing the change in unphysical velocity at the vicinity of the interface under input variations and as the result of domain discretization limits. Several static droplet tests were performed with different conditions of input variables using DL_MESO Lattice Boltzmann Equation (LBE). The SC model is found to present numerical instability for liquid-gas density ratios above 33 and at reduced temperature of below 0.67, and the magnitude of unphysical velocity also increases dramatically. The results of the assessment demonstrate the current limitations of SC LBM when used in the simulation of liquid/gas flows at moderate or low temperatures and high liquid-gas density ratios.
Original languageEnglish
DOIs
Publication statusPublished - Nov 15 2016
Event 4th IET Clean Energy and Technology Conference (CEAT 2016) - University of Malaya, Kuala Lumpur, Malaysia
Duration: Nov 14 2016Nov 15 2016
Conference number: CP688
https://umconference.um.edu.my/ceat2016

Conference

Conference 4th IET Clean Energy and Technology Conference (CEAT 2016)
Abbreviated titleCEAT 2016
CountryMalaysia
CityKuala Lumpur
Period11/14/1611/15/16
Internet address

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multiphase flow
liquids
gas density
simulation
static tests
gas flow
temperature
velocity distribution
vapor phases
gases

Cite this

Rojas Solorzano, L., Dauyeshova, B., & Monaco, E. (2016). 2D Static droplet simulation with Shan-Chen multiphase Lattice Boltzmann Model. Paper presented at 4th IET Clean Energy and Technology Conference (CEAT 2016), Kuala Lumpur, Malaysia. https://doi.org/10.1049/cp.2016.1363

2D Static droplet simulation with Shan-Chen multiphase Lattice Boltzmann Model. / Rojas Solorzano, Luis; Dauyeshova, Bagdagul; Monaco, Ernesto.

2016. Paper presented at 4th IET Clean Energy and Technology Conference (CEAT 2016), Kuala Lumpur, Malaysia.

Research output: Contribution to conferencePaper

Rojas Solorzano, L, Dauyeshova, B & Monaco, E 2016, '2D Static droplet simulation with Shan-Chen multiphase Lattice Boltzmann Model' Paper presented at 4th IET Clean Energy and Technology Conference (CEAT 2016), Kuala Lumpur, Malaysia, 11/14/16 - 11/15/16, . https://doi.org/10.1049/cp.2016.1363
Rojas Solorzano L, Dauyeshova B, Monaco E. 2D Static droplet simulation with Shan-Chen multiphase Lattice Boltzmann Model. 2016. Paper presented at 4th IET Clean Energy and Technology Conference (CEAT 2016), Kuala Lumpur, Malaysia. https://doi.org/10.1049/cp.2016.1363
Rojas Solorzano, Luis ; Dauyeshova, Bagdagul ; Monaco, Ernesto. / 2D Static droplet simulation with Shan-Chen multiphase Lattice Boltzmann Model. Paper presented at 4th IET Clean Energy and Technology Conference (CEAT 2016), Kuala Lumpur, Malaysia.
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AB - This paper presents the assessment of the capability of ShanChen (SC) Multiphase Lattice Boltzmann Model (LBM) to accurately predict the liquid-gas interface in multiphase flow. Multiphase flow can be found in various applications, as for example, in CO2 sequestration. One of the challenges for numerical models of such multiphase flows is being able to capture correctly the interface where liquid/gas phase transition happens. In this study, we analyse how parameters such as density ratio and temperature range affect the magnitude of unphysical velocity fields at the interface. The assessment of the model is performed by observing the change in unphysical velocity at the vicinity of the interface under input variations and as the result of domain discretization limits. Several static droplet tests were performed with different conditions of input variables using DL_MESO Lattice Boltzmann Equation (LBE). The SC model is found to present numerical instability for liquid-gas density ratios above 33 and at reduced temperature of below 0.67, and the magnitude of unphysical velocity also increases dramatically. The results of the assessment demonstrate the current limitations of SC LBM when used in the simulation of liquid/gas flows at moderate or low temperatures and high liquid-gas density ratios.

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