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 OJFD  Vol.7 No.3 , September 2017
Numerical Simulation of Interaction between Supersonic Flow and Backward Inclined Jets Surrounded by Porous Cavity
Nao Kuniyoshi1, Minoru Yaga2
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Abstract: As one of supersonic mixing techniques, a supersonic mixing technique using a cavity and a porous wall has been proposed. The cavity and the porous wall generate the low speed region in the cavity, which enhances mixing the main flow with the jets. In this study, numerical simulations were conducted to clarify the effects of backward inclined jets on the mixing technique using a porous wall and a cavity. In the numerical simulations, three patterns of jet injections which combined normal jets with backward inclined jets were studied. As a result, the combination of a backward inclined jet and a normal jet generates the suction flow behind the backward inclined jet, which is useful for making the injected jets flow into the cavity. In addition, the introduction of backward inclined jets reduces the total pressure loss. On the other hand, the mass flow rate through the porous holes decreases with increase in the number of the backward inclined jets.
Keywords: Supersonic Mixing, Cavity, Porous Wall, Backward Inclined Jet
Cite this paper: Kuniyoshi, N. and Yaga, M. (2017) Numerical Simulation of Interaction between Supersonic Flow and Backward Inclined Jets Surrounded by Porous Cavity. Open Journal of Fluid Dynamics, 7, 276-287. doi: 10.4236/ojfd.2017.73018.
References

[1]   Masuda, W., Hishida, M. and Abe, Y. (1999) Mixing and Reacting Zone Structure in a Supersonic Mixing Chemical Oxygen-Iodine Laser with Ramp Nozzle Array. JSME International Journal Series B Fluids and Thermal Engineering, 42, 362-368.
https://doi.org/10.1299/jsmeb.42.362

[2]   Gerlinger, P., Stoll, P., Kindler, M., Schneider, F. and Aigner, M. (2008) Numerical Investigation of Mixing and Combustion Enhancement in Supersonic Combustors by Strut Induced Streamwise Vorticity. Aerospace Science and Technology, 12, 159-168.
https://doi.org/10.1016/j.ast.2007.04.003

[3]   Kubo, N., Murakami, A., Kudo, K. and Tomioka, S. (2015) An Experimental Investigation on Combustion Characteristics of Hypermixer Injectors—Effects of the “Swept” Applied to Hypermixer Injector Ramps. Procedia Engineering, 99, 954-960.
https://doi.org/10.1016/j.proeng.2014.12.627

[4]   Das, R., Kim, J. S. and Kim, H.D. (2015) Supersonic Cavity Based Combustion with Kerosene/Hydrogen Fuel. Journal of Thermal Science, 24, 164-172.
https://doi.org/10.1007/s11630-015-0769-z

[5]   Ukai, T., Zare-Behtash, H., Lo, K.H., Kontis, K. and Obayasihi S. (2014) Effects of Dual Jets Distance on Mixing Characteristics and Flow Path within a Cavity in Supersonic Crossflow. International Journal of Heat and Fluid Flow, 50, 254-262.
https://doi.org/10.1016/j.ijheatfluidflow.2014.08.009

[6]   Kuniyoshi, N., Yaga, M., Koda, A., Teruya, I. and Ishikawa, M. (2012) Experimental Study of Interaction between Supersonic Duct Flow and Jets Surrounded by the Porous Cavity. Experimental Thermal and Fluid Science, 40, 185-194.
https://doi.org/10.1016/j.expthermflusci.2012.03.011

[7]   Kuniyoshi, N., Yaga, M., Teruya, I. and Ishikawa, M. (2016) Numerical Study of Injected Jet into Supersonic Main Flow from Porous Cavity. Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, 14, Pe_49-Pe_53.
http://doi.org/10.2322/tastj.14.Pe_49

[8]   Doerffer, P.P. and Bohning, R. (2000) Modeling of Perforated Plate Aerodynamics Performance. Aerospace Science and Technology, 4, 525-534.
https://doi.org/10.1016/S1270-9638(00)01063-4

 
 
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