Flow control with aero-spike behind bluff body
Flow control in high-speed is challenging due to the high-pressure shock and low-pressure recirculation bubble attached around the vehicle. Wave drag, and Base drag are important accouterments of flow around high-speed objects. This paper deals with base drag, only and presents an experimental stu...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Trans Stellar
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/64272/ http://irep.iium.edu.my/64272/ http://irep.iium.edu.my/64272/ http://irep.iium.edu.my/64272/1/2-67-1528969682-106.IJMPERDJUN2018106_2.pdf http://irep.iium.edu.my/64272/7/64272_Flow%20control%20with%20aerospike%20behind%20bluff%20body_scopus.pdf |
| Summary: | Flow control in high-speed is challenging due to the high-pressure shock and low-pressure recirculation bubble
attached around the vehicle. Wave drag, and Base drag are important accouterments of flow around high-speed objects.
This paper deals with base drag, only and presents an experimental study of aerospikes behind the base of bluff bodies to control this drag. A plate of 1 mm thickness with two spikes at 11.5 mm is placed between the nozzle and duct as a passive controller. The Mach numbers deployed for the subsonic regime were 0.6, 0.7 and for transonic regime were 0.8, 0.9 for area ratio 6.25. The L/W ratio taken were 4W, 6W, 8W and 10W. Aerospikes were found to be very effective in controlling base pressure in the transonic regime without influencing the main flow field. |
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