Motion of Air Bubbles in a Cement Slurry
The dynamics of air (gas) bubbles in a column of cement slurry is examined numerically. The air injected at the bottom of a laboratory-scale column through a porous distributor plate spatially distributes and migrates as a swarm of bubbles throughout the slurry toward the freeboard. The two-phase sy...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/19/6433 |
| _version_ | 1797575631480815616 |
|---|---|
| author | N’dri Arthur Konan Eilis Rosenbaum Mehrdad Massoudi |
| author_facet | N’dri Arthur Konan Eilis Rosenbaum Mehrdad Massoudi |
| author_sort | N’dri Arthur Konan |
| collection | DOAJ |
| description | The dynamics of air (gas) bubbles in a column of cement slurry is examined numerically. The air injected at the bottom of a laboratory-scale column through a porous distributor plate spatially distributes and migrates as a swarm of bubbles throughout the slurry toward the freeboard. The two-phase system of the cement slurry and the air bubbles is modeled using the conservation equations of mass and linear momentum in the framework of the volume-of-fluid (VOF) approach. The cement slurry is modeled using the Herschel–Bulkley and Bingham fluid models. Results show that the mean Sauter diameter and the mean rise velocity of the bubbles decrease with the gas flow rate. Meanwhile, it is found that the rising of the bubbles is controlled by breakup events, along with relatively weak path instabilities of the bubbles resulting in relatively straight trajectories, independent of the gas flow rate. The extent of the yielded region appears larger for the Herschel–Bulkley model compared to the Bingham fluid model (by approximately 10%). |
| first_indexed | 2024-03-10T21:41:03Z |
| format | Article |
| id | doaj.art-bac8328de53441f780200db0d2841b76 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T21:41:03Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-bac8328de53441f780200db0d2841b762023-11-19T14:39:48ZengMDPI AGMaterials1996-19442023-09-011619643310.3390/ma16196433Motion of Air Bubbles in a Cement SlurryN’dri Arthur Konan0Eilis Rosenbaum1Mehrdad Massoudi2National Energy Technology Laboratory, 3610 Collins Ferry Road, Morgantown, WV 26507, USANational Energy Technology Laboratory, 626 Cochran Mill Road, Pittsburgh, PA 15236, USANational Energy Technology Laboratory, 626 Cochran Mill Road, Pittsburgh, PA 15236, USAThe dynamics of air (gas) bubbles in a column of cement slurry is examined numerically. The air injected at the bottom of a laboratory-scale column through a porous distributor plate spatially distributes and migrates as a swarm of bubbles throughout the slurry toward the freeboard. The two-phase system of the cement slurry and the air bubbles is modeled using the conservation equations of mass and linear momentum in the framework of the volume-of-fluid (VOF) approach. The cement slurry is modeled using the Herschel–Bulkley and Bingham fluid models. Results show that the mean Sauter diameter and the mean rise velocity of the bubbles decrease with the gas flow rate. Meanwhile, it is found that the rising of the bubbles is controlled by breakup events, along with relatively weak path instabilities of the bubbles resulting in relatively straight trajectories, independent of the gas flow rate. The extent of the yielded region appears larger for the Herschel–Bulkley model compared to the Bingham fluid model (by approximately 10%).https://www.mdpi.com/1996-1944/16/19/6433yield stress fluidcement slurrygas migrationHerschel–Bulkley fluidBingham fluidVOF |
| spellingShingle | N’dri Arthur Konan Eilis Rosenbaum Mehrdad Massoudi Motion of Air Bubbles in a Cement Slurry Materials yield stress fluid cement slurry gas migration Herschel–Bulkley fluid Bingham fluid VOF |
| title | Motion of Air Bubbles in a Cement Slurry |
| title_full | Motion of Air Bubbles in a Cement Slurry |
| title_fullStr | Motion of Air Bubbles in a Cement Slurry |
| title_full_unstemmed | Motion of Air Bubbles in a Cement Slurry |
| title_short | Motion of Air Bubbles in a Cement Slurry |
| title_sort | motion of air bubbles in a cement slurry |
| topic | yield stress fluid cement slurry gas migration Herschel–Bulkley fluid Bingham fluid VOF |
| url | https://www.mdpi.com/1996-1944/16/19/6433 |
| work_keys_str_mv | AT ndriarthurkonan motionofairbubblesinacementslurry AT eilisrosenbaum motionofairbubblesinacementslurry AT mehrdadmassoudi motionofairbubblesinacementslurry |