Effect of micro jet control on the flow filed of the duct at Mach 1.5

• Main Authors: Khan, Sher Afghan, Aabid, Abdul, Mokashi, Imran, Ahmad, Zaheer
• Format: Article
• Language: English; English
• Published: Blue Eyes Intelligence Engineering & Sciences Publication 2019
• Subjects: TL Motor vehicles. Aeronautics. Astronautics
• Online Access: http://irep.iium.edu.my/74935/7/74935%20Effect%20of%20Micro%20Jet%20Control.pdf; http://irep.iium.edu.my/74935/13/74935_Effect%20of%20micro%20jet%20control%20on%20the%20flow%20filed%20of%20the%20duct%20at%20mach%201.5_Scopus.pdf; http://irep.iium.edu.my/74935/; https://www.ijrte.org/wp-content/uploads/papers/v8i2S8/B11480882S819.pdf

This article reports the outcome of the wind-tunnel investigation on the role of microjets as an active control on the wall pressure distribution. Four tiny jets of 1 mm diameter located at 90-degree intervals along a pcd of 1.3 are employed for the control. The Mach number considered for suddenly expanded flow through the nozzle is 1.5, and the microjets are expanded suddenly into a duct at the base with an area ratio of 3.24 times the CD nozzle exit area. The L/D ratio of the duct was reduced from 10 to 1 in steps of 1. The nozzle pressure ratio (NPR) was operated at 3 to 11 with and without control. The wall pressure distribution is observed in the suddenly expanded axis-symmetric duct. From the results, it has been found that the wall pressure distribution does not adversely influence the microjet controller