Abstract
For decades, researchers have pursued the development of supersonic combustion ramjet (scramjet) engines. The scramjet is an airbreathing hypersonic propulsion system that utilizes atmospheric oxygen for combustion. Hence, the oxidizer does not have to be carried on-board, which makes scramjets more efficient than rockets and thus very attractive for hypersonic transportation or access-to-space systems. However, hypersonic speeds cause, amongst other challenges, very short residence times within the scramjet combustor. Therefore, achieving a high combustion efficiency poses a major challenge. The combustion efficiency is closely coupled with the mixing efficiency, since most scramjets are mixing limited. Thus, extensive studies focusing on mixing enhancement have been conducted in the past. Different injector shapes and angles [1, 2], flame holding devices [3] and mixing enhancing hypermixers [4] have been investigated in scramjets.
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References
Srinivasan, R., Bowersox, R.D.W.: Transverse Injection Through Diamond and Circular Ports into a Mach 5.0 Freestream. AIAA J. 46(8), 1944–1962 (2008)
Kovachevich, A.L.: Investigation of an Intake Injected Scramjet with a Hot Wall. PhD thesis, The University of Queensland, Australia (2012)
Ben-Yakar, A., Hanson, R.K.: Cavity Flame-Holders for Ignition and Flame Stabilization in Scramjets: An Overview. JPP 17(4), 869–877 (2001)
Seiner, J.M., Dash, S.M., Kenzakowski, D.C.: Historical Survey on Enhanced Mixing in Scramjet Engines. JPP 17(6), 1273–1286 (2001)
Gardner, A.D., Paul, A., McIntyre, T.J.: Upstream porthole injection in a 2-D scramjet model. Shock Waves 11(5), 369–375 (2002)
Boyce, R.R., Schloegel, F., McIntyre, T.J., Tirtey, S.C.: Pressure-Scaling of Inlet-Injection Radical-Farming Scramjets. In: 20th International Symposium on Airbreathing Engines (2011)
Huber, P.W., Schexnayder Jr., C.J., McClinton, C.R.: Criteria for Self-Ignition of Supersonic Hydrogen-Air Mixtures. Technical Report, NASA, TP-1457 (1979)
Lee, S.-H., Jeung, I.-S., Yoon, Y.: Computational Investigation of Shock-Enhanced Mixing and Combustion. AIAA J. 35(12), 1813–1820 (1997)
Boyce, R.R., Mudford, N.R., McGuire, J.R.: OH-PLIF visualisation of radical farming supersonic combustion flows. Shock Waves 22(1), 9–21 (2012)
Boyce, R.R., Schramm, J.M., Oberg, D., Hannemann, K., Brown, L.: Shock tunnel and numerical studies of a large inlet-fuelled inward turning axisymmetric scramjet. In: International Space Planes and Hypersonic Systems and Technologies Conferences. AIAA (2012)
Peterson, D., Boyce, R.R., Wheatley, V.: Hybrid Reynolds-Averaged and Large-Eddy Simulation of Mixing in an Axisymmetric Scramjet. In: International Space Planes and Hypersonic Systems and Technologies Conferences. AIAA (2012)
Nompelis, I., Drayna, T.W., Candler, G.V.: Development of a Hybrid Unstructured Implicit Solver for the Simulation of Reacting Flows Over Complex Geometries. In: 34th AIAA Fluid Dynamics Conference. AIAA (2004)
Peterson, D.M., Candler, G.V.: Hybrid Reynolds-Averaged and Large-Eddy Simulation of Normal Injection into a Supersonic Crossflow. JPP 26(4), 533–544 (2010)
Spalart, P.R., Allmaras, S.R.: One-equation turbulence model for aerodynamic flows. Rech. Aerosp. 1, 5–21 (1994)
Subbareddy, P.K.V.: Stable Low-Dissipation Schemes for Turbulent Compressible Flows. PhD thesis, University of Minnesota, USA (2007)
Evans, J.S., Schexnayder Jr., C.J.: Influence of Chemical Kinetics and Unmixedness on Burning in Supersonic Hydrogen Flames. AIAA J. 18(2), 188–193 (1980)
Gehre, R.M., Wheatley, V., Boyce, R.R., Peterson, D.M., Brieschenk, S.: Reynolds-averaged Navier-Stokes and wall-modeled large-eddy simulations of sonic hydrogen injection into hypersonic crossflow. In: Proceedings of the 18th Australasian Fluid Mechanics Conference (2012)
Peterson, D.M.: Simulations of Mixing, Injection, and Combustion in Supersonic Flow Using a Hybrid RANS/LES Approach. PhD thesis, University of Minnesota, USA (2011)
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Gehre, R.M., Peterson, D., Wheatley, V., Boyce, R.R. (2015). Numerical Investigation of the Mixing Process in Inlet-fuelled Scramjets. In: Bonazza, R., Ranjan, D. (eds) 29th International Symposium on Shock Waves 2. ISSW 2013. Springer, Cham. https://doi.org/10.1007/978-3-319-16838-8_32
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DOI: https://doi.org/10.1007/978-3-319-16838-8_32
Publisher Name: Springer, Cham
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