Open AccessInfluence of Microjets on Flow Development at Supersonic Mach numbers with Sudden Expansion
Author(s) -
Hamza Afser Delvi,
R Ridwan,
Rayid Muneer,
Mohammed Faheem,
Sher Afghan Khan
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1057/1/012051
Subject(s) - mach number , duct (anatomy) , supersonic speed , mechanics , mach wave , physics , geology , anatomy , biology
This paper presents the control of suddenly expanded flow using four microjets at the base recirculation zone for a diameter ratio of 1.8. Eight Mach numbers are considered for investigations from 1.25 to 3. The NPRs for which the tests were conducted were from 3 to 11. The duct length considered was L = 10D to 1D. This article has shown only selected results when there is significant variation in the duct's flow field; only those cases are considered. For most of the cases, the flow remains identical with and without control. For Mach M = 1.25 to 2.5, the control results in decline in the duct's pressure when the flow is within the reattachment length. Later there is a progressive rise in the duct pressure. However, the trend is reversed at Mach M 3.0. The least duct stretches necessary intended for the stream to continue to relate to the pipe is L = 1D, 2D, and 3D for the study's Mach number. The first section in your paper