What does this research mean for the field?

A finite difference method-large eddy simulation (FDM-LES) model predicts bubble column reactor behavior, particularly gas fraction profiles and average gas holdup, with significantly better accuracy than RANS-based models. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To develop and evaluate a computational fluid dynamics framework combining large eddy simulation and finite difference methods for predicting multiphase flow in bubble column reactors.

September 5, 2026Multiscale and Multidisciplinary Modeling Experiments and DesignOpen Access

LES-based simulations for bubble columns: a comparative study based on turbulence models and interfacial forces

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Authors

MGMatheus Furtado GringsUniversidade Federal do Rio Grande do Sul LMLígia Damasceno Ferreira MarczakUniversidade Federal do Rio Grande do Sul ÁBÁlvaro Luiz De BortoliUniversidade Federal do Rio Grande do Sul

Discussion

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Overview

Simulation study demonstrates superior gas holdup predictions using large eddy simulations in bubble column reactors, highlighting the benefits of eddy-resolving multiphase hydrodynamic models.

Key Points

To develop and evaluate a computational fluid dynamics framework combining large eddy simulation and finite difference methods for predicting multiphase flow in bubble column reactors.
Implemented a large eddy simulation (LES) approach coupled with a finite difference method (FDM) scheme on a grid-independent uniform mesh.
Tested multiple drag coefficient formulations to account for interfacial forces and compared numerical predictions against published experimental and RANS benchmark data.
The FDM-LES framework showed substantially closer agreement with experimental air volume fraction distributions across reactor regions compared to standard RANS models.
Time-averaged gas holdup estimations in both the lower and upper sections of the column improved significantly over conventional turbulence modeling approaches.

Cite This Study

Grings et al. (2026) studied this question.

synapsesocial.com/papers/6a9bd4606b95aff0620ec16c https://doi.org/10.1007/s41939-026-01260-4

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September 5, 2026Multiscale and Multidisciplinary Modeling Experiments and DesignOpen Access

LES-based simulations for bubble columns: a comparative study based on turbulence models and interfacial forces

View Full Paper

Ask AI

Bookmark

Authors

Discussion

Member takes

Overview

Simulation study demonstrates superior gas holdup predictions using large eddy simulations in bubble column reactors, highlighting the benefits of eddy-resolving multiphase hydrodynamic models.

Key Points

To develop and evaluate a computational fluid dynamics framework combining large eddy simulation and finite difference methods for predicting multiphase flow in bubble column reactors.
Implemented a large eddy simulation (LES) approach coupled with a finite difference method (FDM) scheme on a grid-independent uniform mesh.
Tested multiple drag coefficient formulations to account for interfacial forces and compared numerical predictions against published experimental and RANS benchmark data.
The FDM-LES framework showed substantially closer agreement with experimental air volume fraction distributions across reactor regions compared to standard RANS models.
Time-averaged gas holdup estimations in both the lower and upper sections of the column improved significantly over conventional turbulence modeling approaches.

Cite This Study

Grings et al. (2026) studied this question.

synapsesocial.com/papers/6a9bd4606b95aff0620ec16c https://doi.org/10.1007/s41939-026-01260-4

View Full Paper

Ask AI

Bookmark