Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets
The experimental design incorporated to study the response of a turbulent pressure drop fluctuations to differently shaped longitudinal grooves, involved three conformations or structures being triangular, trapezoidal and spaced triangular grooves with height 800 m. The ratios of the groove height t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IJENS
2016
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| Online Access: | http://umpir.ump.edu.my/id/eprint/14737/1/Wall-Pressure%20Fluctuations%20of%20Modified%20Turbulent.pdf |
| _version_ | 1796991618730950656 |
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| author | Abdulbari, Hayder A. Hassan D., Mahammed Zulkefli, Yaacob Wafaa, Kamil Mahmood |
| author_facet | Abdulbari, Hayder A. Hassan D., Mahammed Zulkefli, Yaacob Wafaa, Kamil Mahmood |
| author_sort | Abdulbari, Hayder A. |
| collection | UMP |
| description | The experimental design incorporated to study the response of a turbulent pressure drop fluctuations to differently shaped longitudinal grooves, involved three conformations or structures being triangular, trapezoidal and spaced triangular grooves with height 800 m. The ratios of the groove height to groove space for triangular were: 1, 0.8, 0.6 and 0.4. Experiments were therefore performed at free stream velocity up to 0.44m/sec, which were corresponding to Reynolds number (Re)5.3×. The development of the obtained turbulent layerdownstream of the grooves was then compared with the results from the corresponding smooth-wall case. To conclude, the effect of the spaced triangular riblets on the turbulent characteristics seemed to be more pronounced than the effects of the triangular and trapezoidal riblets. |
| first_indexed | 2024-03-06T12:08:09Z |
| format | Article |
| id | UMPir14737 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:08:09Z |
| publishDate | 2016 |
| publisher | IJENS |
| record_format | dspace |
| spelling | UMPir147372018-01-11T07:31:05Z http://umpir.ump.edu.my/id/eprint/14737/ Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets Abdulbari, Hayder A. Hassan D., Mahammed Zulkefli, Yaacob Wafaa, Kamil Mahmood TP Chemical technology The experimental design incorporated to study the response of a turbulent pressure drop fluctuations to differently shaped longitudinal grooves, involved three conformations or structures being triangular, trapezoidal and spaced triangular grooves with height 800 m. The ratios of the groove height to groove space for triangular were: 1, 0.8, 0.6 and 0.4. Experiments were therefore performed at free stream velocity up to 0.44m/sec, which were corresponding to Reynolds number (Re)5.3×. The development of the obtained turbulent layerdownstream of the grooves was then compared with the results from the corresponding smooth-wall case. To conclude, the effect of the spaced triangular riblets on the turbulent characteristics seemed to be more pronounced than the effects of the triangular and trapezoidal riblets. IJENS 2016 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/14737/1/Wall-Pressure%20Fluctuations%20of%20Modified%20Turbulent.pdf Abdulbari, Hayder A. and Hassan D., Mahammed and Zulkefli, Yaacob and Wafaa, Kamil Mahmood (2016) Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets. International Journal of Mechanical & Mechatronics Engineering, 16 (1). pp. 23-34. ISSN 2077-124X (Online); 2227-2771 (Print). (Published) http://ijens.org/Vol_16_I_01/162001-3737-IJMME-IJENS.pdf |
| spellingShingle | TP Chemical technology Abdulbari, Hayder A. Hassan D., Mahammed Zulkefli, Yaacob Wafaa, Kamil Mahmood Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets |
| title | Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets |
| title_full | Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets |
| title_fullStr | Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets |
| title_full_unstemmed | Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets |
| title_short | Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets |
| title_sort | wall pressure fluctuations of modified turbulent boundary layer with riblets |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/14737/1/Wall-Pressure%20Fluctuations%20of%20Modified%20Turbulent.pdf |
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