Control of wall pressure flow field with micro jets and control effectiveness
This paper presents an experimental study of airflow from convergent-divergentnozzles discharged into enlarged duct, focusing attention on the flow development in the duct. To investigate the influence of active control on the flow field developed in the duct, the tiny jets of 0.05 mmradiuslocated a...
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my.iium.irep.542962017-01-23T07:48:38Z http://irep.iium.edu.my/54296/ Control of wall pressure flow field with micro jets and control effectiveness Bashir, Musavir Azam, Qummare Khan, Sher Afghan Baig, Maugal Ahmed Ali TJ212 Control engineering This paper presents an experimental study of airflow from convergent-divergentnozzles discharged into enlarged duct, focusing attention on the flow development in the duct. To investigate the influence of active control on the flow field developed in the duct, the tiny jets of 0.05 mmradiuslocated at 900interval along the base at 6.5 mm from the main jet were employed. The Mach number tested in the present study was 1.48. The area ratio tested was 2.56. The NPR tested are from 3, 5, 7, and 9 respectively. The L/D ratio of the duct was varied from 10 to 1. The level of expansion at the nozzle exit influences the wall pressure very strongly. When the micro jets were activated they found to influence the base region, taking the wall pressure to considerably higher values, for most of the cases. Flow field in the duct with and without control remains the same. IOSR journals 2016-12 Article REM application/pdf en http://irep.iium.edu.my/54296/1/qamar-usm.pdf Bashir, Musavir and Azam, Qummare and Khan, Sher Afghan and Baig, Maugal Ahmed Ali (2016) Control of wall pressure flow field with micro jets and control effectiveness. IOSR Journal of Machanical & Civil Engineering, 3. pp. 99-107. ISSN 2320-334x http://www.iosrjournals.org/ http://www.iosrjournals.org/iosr-jmce/pages/i-%20CAM2K16(Mech)-volume-3.html |
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TJ212 Control engineering Bashir, Musavir Azam, Qummare Khan, Sher Afghan Baig, Maugal Ahmed Ali Control of wall pressure flow field with micro jets and control effectiveness |
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This paper presents an experimental study of airflow from convergent-divergentnozzles discharged into enlarged duct, focusing attention on the flow development in the duct. To investigate the influence of active control on the flow field developed in the duct, the tiny jets of 0.05 mmradiuslocated at 900interval along the base at 6.5 mm from the main jet were employed. The Mach number tested in the present study was 1.48. The area ratio tested was 2.56. The NPR tested are from 3, 5, 7, and 9 respectively. The L/D ratio of the duct was varied from 10 to 1. The level of expansion at the nozzle exit influences the wall pressure very strongly. When the micro jets were activated they found to influence the base region, taking the wall pressure to considerably higher values, for most of the cases. Flow field in the duct with and without control remains the same. |
format |
Article |
author |
Bashir, Musavir Azam, Qummare Khan, Sher Afghan Baig, Maugal Ahmed Ali |
author_facet |
Bashir, Musavir Azam, Qummare Khan, Sher Afghan Baig, Maugal Ahmed Ali |
author_sort |
Bashir, Musavir |
title |
Control of wall pressure flow field with micro jets and control effectiveness |
title_short |
Control of wall pressure flow field with micro jets and control effectiveness |
title_full |
Control of wall pressure flow field with micro jets and control effectiveness |
title_fullStr |
Control of wall pressure flow field with micro jets and control effectiveness |
title_full_unstemmed |
Control of wall pressure flow field with micro jets and control effectiveness |
title_sort |
control of wall pressure flow field with micro jets and control effectiveness |
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IOSR journals |
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2016 |
url |
http://irep.iium.edu.my/54296/1/qamar-usm.pdf http://irep.iium.edu.my/54296/ http://www.iosrjournals.org/ http://www.iosrjournals.org/iosr-jmce/pages/i-%20CAM2K16(Mech)-volume-3.html |
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13.160551 |