Prescribed motion flow dynamics
The numerical analysis of a circular cylinder undergoing oscillations in a two-dimensional laminar flow pattern, is performed in this paper. The cylinder is subjected to forced oscillations transverse to the free stream flow. A detailed analysis is presented for prescribed frequency ratios which a...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/144390 |
| _version_ | 1826109657310035968 |
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| author | Md Zishan Akhter Mysa, Ravi Chaithanya |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Md Zishan Akhter Mysa, Ravi Chaithanya |
| author_sort | Md Zishan Akhter |
| collection | NTU |
| description | The numerical analysis of a circular cylinder undergoing oscillations in a two-dimensional laminar flow pattern, is performed in this
paper. The cylinder is subjected to forced oscillations transverse to the free stream flow. A detailed analysis is presented for prescribed
frequency ratios which are half, equal and double to that of the vortex shedding frequency. The prescribed motion amplitudes investigated
range from 10-100 % of the cylinder diameter, at a fixed Reynolds number of 100. Detailed characteristics and field analysis of
prescribed motion dynamics is presented in the paper. When the prescribed frequency matches shedding frequency, phase transition between
transverse pressure force and displacement is witnessed along with the existence of a critical amplitude. The pressure distribution
and evolution of wake contours with respect to the cylinder motion and excitation frequency is critically analysed to develop insight of
the load development in the cylinder-fluid coupled system. |
| first_indexed | 2024-10-01T02:21:49Z |
| format | Journal Article |
| id | ntu-10356/144390 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:21:49Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1443902020-11-03T02:04:48Z Prescribed motion flow dynamics Md Zishan Akhter Mysa, Ravi Chaithanya School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Oscillating Cylinder Vortex Shedding The numerical analysis of a circular cylinder undergoing oscillations in a two-dimensional laminar flow pattern, is performed in this paper. The cylinder is subjected to forced oscillations transverse to the free stream flow. A detailed analysis is presented for prescribed frequency ratios which are half, equal and double to that of the vortex shedding frequency. The prescribed motion amplitudes investigated range from 10-100 % of the cylinder diameter, at a fixed Reynolds number of 100. Detailed characteristics and field analysis of prescribed motion dynamics is presented in the paper. When the prescribed frequency matches shedding frequency, phase transition between transverse pressure force and displacement is witnessed along with the existence of a critical amplitude. The pressure distribution and evolution of wake contours with respect to the cylinder motion and excitation frequency is critically analysed to develop insight of the load development in the cylinder-fluid coupled system. 2020-11-03T02:04:47Z 2020-11-03T02:04:47Z 2019 Journal Article Md Zishan Akhter & Mysa, R. C. (2019). Prescribed motion flow dynamics. Journal of Mechanical Science and Technology, 33(1), 289-297. doi:10.1007/s12206-018-1228-z 1738-494X https://hdl.handle.net/10356/144390 10.1007/s12206-018-1228-z 1 33 289 297 en Journal of Mechanical Science and Technology © 2019 KSME & Springer. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Oscillating Cylinder Vortex Shedding Md Zishan Akhter Mysa, Ravi Chaithanya Prescribed motion flow dynamics |
| title | Prescribed motion flow dynamics |
| title_full | Prescribed motion flow dynamics |
| title_fullStr | Prescribed motion flow dynamics |
| title_full_unstemmed | Prescribed motion flow dynamics |
| title_short | Prescribed motion flow dynamics |
| title_sort | prescribed motion flow dynamics |
| topic | Engineering::Mechanical engineering Oscillating Cylinder Vortex Shedding |
| url | https://hdl.handle.net/10356/144390 |
| work_keys_str_mv | AT mdzishanakhter prescribedmotionflowdynamics AT mysaravichaithanya prescribedmotionflowdynamics |