Impact of expansion level on flowfield with sudden expansion at supersonic regimes

• Main Authors: Faheem, Mohammed, Ridwan, R, Rayid, Muneer, Delvi, Hamza Afser, Khan, Sher Afghan
• Format: Conference or Workshop Item
• Language: English; English; English
• Published: Elsevier Ltd 2021
• Subjects: TL500 Aeronautics
• Online Access: http://irep.iium.edu.my/92647/7/92647_Impact%20of%20expansion%20level%20on%20flowfield.pdf; http://irep.iium.edu.my/92647/8/92647_Impact%20of%20expansion%20level%20on%20flowfield_Scopus.pdf; http://irep.iium.edu.my/92647/9/92647_Impact%20of%20expansion%20level%20on%20flowfield_WoS.pdf; http://irep.iium.edu.my/92647/; https://www.journals.elsevier.com/materials-today-proceedings

This paper aims to assess the control mechanism’s efficiency and flow pattern in the pipe. The flow was investigated for Mach numbers M = 1.25, 1.3, 1.48, 1.6, 1.8, 2.0, 2.5, and 3.0 for a step height of 3 mm. The NPRs of the tests were from 11 to 3. The flow revealed the minimum duct requirement for a given Mach number and NPR as L = 2D. Only some selected cases where the control mechanism impacts considerably are presented. In most of the cases, the flow field was the same. There is a reversal in control in the flow field; only such cases are discussed. At low Mach numbers, the flow regulator raises the pressure, and for the rest of the Mach numbers, t