Physical Overview of the Instability in Laminar Wall-Bounded Flows of Newtonian Fluids at Subcritical Reynolds Numbers
This paper reviews the latest findings on instability and subcritical transition to turbulence in wall-bounded flows (i.e., pipe Poiseuille flow, plane channel flow, and plane Couette flow). The main focus was on the early stage of transitional flow and the appearance of coherent structures. The sca...
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| Format: | Article |
| Language: | English |
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Semnan University
2024-06-01
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| Series: | Journal of Heat and Mass Transfer Research |
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| Online Access: | https://jhmtr.semnan.ac.ir/article_8491_23fe73a2c672b633e46ae52a04dccead.pdf |
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| author | Hamed Mirzaee Goodarz Ahmadi Roohollah Rafee Farhad Talebi |
| author_facet | Hamed Mirzaee Goodarz Ahmadi Roohollah Rafee Farhad Talebi |
| author_sort | Hamed Mirzaee |
| collection | DOAJ |
| description | This paper reviews the latest findings on instability and subcritical transition to turbulence in wall-bounded flows (i.e., pipe Poiseuille flow, plane channel flow, and plane Couette flow). The main focus was on the early stage of transitional flow and the appearance of coherent structures. The scaling of threshold disturbance amplitude for the onset of natural transition was discussed. Generally, the scaling proved to be in the form of Ac = O(Reg) for Newtonian fluids where Re is the Reynolds number, g ≤ -1, and Ac is the critical perturbation amplitude. It was noted that exploration of perturbations like vortices, streaks, and traveling waves together with their amplitudes could clarify the instability and transition process. Hence, this paper focused on physical behavior and realizations of the transitional flow. Finally, a summary of consequential implications and some open issues for future works were presented and discussed. |
| format | Article |
| id | doaj-art-7d12c0c65cb6446d8aacbd494c84d7db |
| institution | DOAJ |
| issn | 2345-508X 2383-3068 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Semnan University |
| record_format | Article |
| series | Journal of Heat and Mass Transfer Research |
| spelling | doaj-art-7d12c0c65cb6446d8aacbd494c84d7db2025-08-20T02:49:17ZengSemnan UniversityJournal of Heat and Mass Transfer Research2345-508X2383-30682024-06-01111153210.22075/jhmtr.2024.31381.14668491Physical Overview of the Instability in Laminar Wall-Bounded Flows of Newtonian Fluids at Subcritical Reynolds NumbersHamed Mirzaee0Goodarz Ahmadi1Roohollah Rafee2Farhad Talebi3Faculty of Mechanical Engineering, Semnan University, Semnan, IranDepartment of Mechanical and Aerospace Engineering, Clarkson University, Potsdam, NY, USAFaculty of Mechanical Engineering, Semnan University, Semnan, IranFaculty of Mechanical Engineering, Semnan University, Semnan, IranThis paper reviews the latest findings on instability and subcritical transition to turbulence in wall-bounded flows (i.e., pipe Poiseuille flow, plane channel flow, and plane Couette flow). The main focus was on the early stage of transitional flow and the appearance of coherent structures. The scaling of threshold disturbance amplitude for the onset of natural transition was discussed. Generally, the scaling proved to be in the form of Ac = O(Reg) for Newtonian fluids where Re is the Reynolds number, g ≤ -1, and Ac is the critical perturbation amplitude. It was noted that exploration of perturbations like vortices, streaks, and traveling waves together with their amplitudes could clarify the instability and transition process. Hence, this paper focused on physical behavior and realizations of the transitional flow. Finally, a summary of consequential implications and some open issues for future works were presented and discussed.https://jhmtr.semnan.ac.ir/article_8491_23fe73a2c672b633e46ae52a04dccead.pdfflowinstabilitytransitionperturbationamplitude |
| spellingShingle | Hamed Mirzaee Goodarz Ahmadi Roohollah Rafee Farhad Talebi Physical Overview of the Instability in Laminar Wall-Bounded Flows of Newtonian Fluids at Subcritical Reynolds Numbers Journal of Heat and Mass Transfer Research flow instability transition perturbation amplitude |
| title | Physical Overview of the Instability in Laminar Wall-Bounded Flows of Newtonian Fluids at Subcritical Reynolds Numbers |
| title_full | Physical Overview of the Instability in Laminar Wall-Bounded Flows of Newtonian Fluids at Subcritical Reynolds Numbers |
| title_fullStr | Physical Overview of the Instability in Laminar Wall-Bounded Flows of Newtonian Fluids at Subcritical Reynolds Numbers |
| title_full_unstemmed | Physical Overview of the Instability in Laminar Wall-Bounded Flows of Newtonian Fluids at Subcritical Reynolds Numbers |
| title_short | Physical Overview of the Instability in Laminar Wall-Bounded Flows of Newtonian Fluids at Subcritical Reynolds Numbers |
| title_sort | physical overview of the instability in laminar wall bounded flows of newtonian fluids at subcritical reynolds numbers |
| topic | flow instability transition perturbation amplitude |
| url | https://jhmtr.semnan.ac.ir/article_8491_23fe73a2c672b633e46ae52a04dccead.pdf |
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