Effect of Strut Geometry in Supersonic Mixing
V. Sumesh1, P. Balachandran2
1V. Sumesh*, Research Scholar, Department of Mechanical Engineering, College of Engineering Trivandrum, Thiruvanathapuram, India.
2P. Balachandran, Dean – Research, John Cox Memorial CSI Institute of Technology, Thiruvananthapuram, India.
Manuscript received on August 07, 2020. | Revised Manuscript received on August 15, 2020. | Manuscript published on August 30, 2020. | PP: 383-389 | Volume-9 Issue-6, August 2020. | Retrieval Number: F1529089620/2020©BEIESP | DOI: 10.35940/ijeat.F1529.089620
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Effective mixing in a short mixing chamber is a major challenge in supersonic air breathing engines, especially the mixing between two high speed co-axial streams. The residence time is a major factor to get the two streams properly mixed. The selection of mixing method is crucial in the supersonic conditions. An experimental study has been performed on the supersonic mixing of air from strut injectors of various combinations in their trailing ramp angles with a free stream air of Mach number 2. Two different configurations of geometries, a plain geometry and a lobed geometry considered and further two different combinations, slot and hole injections, are taken for the study in each geometry. Among different combinations, it is found that a better mixing enhancement is achieved for the 9o lobed geometry struts.
Keywords: Momentum Flux, Stagnation pressure loss, Strut injection, Supersonic mixing.