Swirl flow in annular geometry with varying cross-section
Swirling gas flow is an important topic of research that helps in the design of rockets, atomizers,and gas turbine combustors. In the present work, swirl flow inside annular geometries with constant and varying cross-sectional areas are examined using computational fluid dynamics (CFD). Effects of c...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Engineering Applications of Computational Fluid Mechanics |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/19942060.2022.2076744 |
| _version_ | 1828793841514184704 |
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| author | Mohammad Raghib Shakeel Esmail M. A. Mokheimer |
| author_facet | Mohammad Raghib Shakeel Esmail M. A. Mokheimer |
| author_sort | Mohammad Raghib Shakeel |
| collection | DOAJ |
| description | Swirling gas flow is an important topic of research that helps in the design of rockets, atomizers,and gas turbine combustors. In the present work, swirl flow inside annular geometries with constant and varying cross-sectional areas are examined using computational fluid dynamics (CFD). Effects of changing the flow and geometric parameters on the swirl behaviour were studied. Reynolds number was found to increase the swirl number in straight and diverging cross-sectional geometries while no significant effect of Reynolds number was observed in converging cross-sectional geometry. Radius ratio, defined as the ratio of the inner to the outer radius of the annular geometry, was found to have a significant effect on the swirl number. Decreasing the radius ratio, in straight and diverging annular geometry decreases the swirl number, however, an opposite trend was observed in the case of converging annular geometry due to significant increase in axial velocity as a result of reduced cross-sectional area. Increasing the swirler vane angle increased the swirl number. At higher vane angles of 60° and 70°, a recirculation zone is developed near the exit of the swirler. Using small cone angles was found to lower the swirl decay rate in converging and diverging nozzles. |
| first_indexed | 2024-12-12T03:34:27Z |
| format | Article |
| id | doaj.art-6878b9dc01c74aaa882d411dd686fc0f |
| institution | Directory Open Access Journal |
| issn | 1994-2060 1997-003X |
| language | English |
| last_indexed | 2024-12-12T03:34:27Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Engineering Applications of Computational Fluid Mechanics |
| spelling | doaj.art-6878b9dc01c74aaa882d411dd686fc0f2022-12-22T00:39:50ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2022-12-011611154117210.1080/19942060.2022.2076744Swirl flow in annular geometry with varying cross-sectionMohammad Raghib Shakeel0Esmail M. A. Mokheimer1Department of Mechanical Engineering, College of Engineering, King Fahd University of Minerals & Petroleum (KFUPM), Dharhan, Saudi ArabiaDepartment of Mechanical Engineering, College of Engineering, King Fahd University of Minerals & Petroleum (KFUPM), Dharhan, Saudi ArabiaSwirling gas flow is an important topic of research that helps in the design of rockets, atomizers,and gas turbine combustors. In the present work, swirl flow inside annular geometries with constant and varying cross-sectional areas are examined using computational fluid dynamics (CFD). Effects of changing the flow and geometric parameters on the swirl behaviour were studied. Reynolds number was found to increase the swirl number in straight and diverging cross-sectional geometries while no significant effect of Reynolds number was observed in converging cross-sectional geometry. Radius ratio, defined as the ratio of the inner to the outer radius of the annular geometry, was found to have a significant effect on the swirl number. Decreasing the radius ratio, in straight and diverging annular geometry decreases the swirl number, however, an opposite trend was observed in the case of converging annular geometry due to significant increase in axial velocity as a result of reduced cross-sectional area. Increasing the swirler vane angle increased the swirl number. At higher vane angles of 60° and 70°, a recirculation zone is developed near the exit of the swirler. Using small cone angles was found to lower the swirl decay rate in converging and diverging nozzles.https://www.tandfonline.com/doi/10.1080/19942060.2022.2076744Swirlswirl flowannulusconverging annulusdiverging annulusvarying cross-sectional annuli |
| spellingShingle | Mohammad Raghib Shakeel Esmail M. A. Mokheimer Swirl flow in annular geometry with varying cross-section Engineering Applications of Computational Fluid Mechanics Swirl swirl flow annulus converging annulus diverging annulus varying cross-sectional annuli |
| title | Swirl flow in annular geometry with varying cross-section |
| title_full | Swirl flow in annular geometry with varying cross-section |
| title_fullStr | Swirl flow in annular geometry with varying cross-section |
| title_full_unstemmed | Swirl flow in annular geometry with varying cross-section |
| title_short | Swirl flow in annular geometry with varying cross-section |
| title_sort | swirl flow in annular geometry with varying cross section |
| topic | Swirl swirl flow annulus converging annulus diverging annulus varying cross-sectional annuli |
| url | https://www.tandfonline.com/doi/10.1080/19942060.2022.2076744 |
| work_keys_str_mv | AT mohammadraghibshakeel swirlflowinannulargeometrywithvaryingcrosssection AT esmailmamokheimer swirlflowinannulargeometrywithvaryingcrosssection |