Nguyen, B. ; Popp, S. ; Hundshagen, M. ; Skoda, R. ; Mansouri, M. ; Thévenin, D. ; Hasse, C. (2022)
Large Eddy Simulations of Turbulent Gas-Liquid Flows in a Diverging Horizontal Channel Using a Hybrid Multiphase Approach.
In: Journal of Fluids Engineering, 145 (3)
doi: 10.1115/1.4056209
Article, Bibliographie
Abstract
Centrifugal pumps conveying gas–liquid flows are often designed based on pure liquid flows due to limited understanding of gas formations within a gas–liquid flow. Computational fluid dynamics (CFD) can provide insights into the flow characteristics, yet standard multiphase models are not able to describe a wide range of spatial scales. In this study, a hybrid multiphase approach for turbulent flows based on an Eulerian-Eulerian solver with volume-of-fluid (VOF) enhancements is applied, which can handle multiple flow regimes (continuous gas/liquid, disperse bubbles) at once. Large eddy simulations (LES) of gas–liquid-flows through a diverging horizontal channel (diffuser) are performed to evaluate the possibilities and limitations of this approach. Three representative cases, each containing different flow characteristics, are computed using a fixed bubble size approach. The results show that the hybrid approach is able to capture all flow characteristics and predict the gas void size and position precisely. However, it can be observed that the performance of the approach significantly depends on the specified bubble size.
| Item Type: | Article |
|---|---|
| Erschienen: | 2022 |
| Creators: | Nguyen, B. ; Popp, S. ; Hundshagen, M. ; Skoda, R. ; Mansouri, M. ; Thévenin, D. ; Hasse, C. |
| Type of entry: | Bibliographie |
| Title: | Large Eddy Simulations of Turbulent Gas-Liquid Flows in a Diverging Horizontal Channel Using a Hybrid Multiphase Approach |
| Language: | English |
| Date: | 2 December 2022 |
| Publisher: | ASME |
| Journal or Publication Title: | Journal of Fluids Engineering |
| Volume of the journal: | 145 |
| Issue Number: | 3 |
| DOI: | 10.1115/1.4056209 |
| URL / URN: | https://asmedigitalcollection.asme.org/fluidsengineering/art... |
| Abstract: | Centrifugal pumps conveying gas–liquid flows are often designed based on pure liquid flows due to limited understanding of gas formations within a gas–liquid flow. Computational fluid dynamics (CFD) can provide insights into the flow characteristics, yet standard multiphase models are not able to describe a wide range of spatial scales. In this study, a hybrid multiphase approach for turbulent flows based on an Eulerian-Eulerian solver with volume-of-fluid (VOF) enhancements is applied, which can handle multiple flow regimes (continuous gas/liquid, disperse bubbles) at once. Large eddy simulations (LES) of gas–liquid-flows through a diverging horizontal channel (diffuser) are performed to evaluate the possibilities and limitations of this approach. Three representative cases, each containing different flow characteristics, are computed using a fixed bubble size approach. The results show that the hybrid approach is able to capture all flow characteristics and predict the gas void size and position precisely. However, it can be observed that the performance of the approach significantly depends on the specified bubble size. |
| Additional Information: | Paper No. 031501 |
| Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Simulation of reactive Thermo-Fluid Systems (STFS) |
| Date Deposited: | 09 Dec 2022 07:12 |
| Last Modified: | 09 Dec 2022 07:12 |
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