Luminescent Measurement Systems for the Investigation of a Scramjet Inlet-Isolator
AbstractScramjets have become a main focus of study for many researchers, due to their application as propulsive devices in hypersonic flight. This entails a detailed understanding of the fluid mechanics involved to be able to design and operate these engines with maximum efficiency even at their off-design conditions. It is the objective of the present cold-flow investigation to study and analyse experimentally the mechanics of the fluid structures encountered within a generic scramjet inlet at M = 5. Traditionally, researchers have to rely on stream-thrust analysis, which requires the complex setup of a mass flow meter, a force balance and a heat transducer in order to measure inlet-isolator performance. Alternatively, the pitot rake could be positioned at inlet-isolator exit plane, but this method is intrusive to the flow, and the number of pitot tubes is limited by the model size constraint. Thus, this urgent need for a better flow diagnostics method is addressed in this paper. Pressure-sensitive paint (PSP) has been applied to investigate the flow characteristics on the compression ramp, isolator surface and isolator sidewall. Numerous shock-shock interactions, corner and shoulder separation regions, as well as shock trains were captured by the luminescent system. The performance of the scramjet inlet-isolator has been shown to improve when operated in a modest angle of attack. View Full-Text
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Idris, A.C.; Saad, M.R.; Zare-Behtash, H.; Kontis, K. Luminescent Measurement Systems for the Investigation of a Scramjet Inlet-Isolator. Sensors 2014, 14, 6606-6632.
Idris AC, Saad MR, Zare-Behtash H, Kontis K. Luminescent Measurement Systems for the Investigation of a Scramjet Inlet-Isolator. Sensors. 2014; 14(4):6606-6632.Chicago/Turabian Style
Idris, Azam C.; Saad, Mohd R.; Zare-Behtash, Hossein; Kontis, Konstantinos. 2014. "Luminescent Measurement Systems for the Investigation of a Scramjet Inlet-Isolator." Sensors 14, no. 4: 6606-6632.