A Numerical Investigation of Localized and Steady Energy Addition to High Speed Airflows

Fraile Jr, Andre Carlos; Rosa, Mauricio Antoniazzi Pinheiro

doi:10.5028/jatm.v5i2.207

ABSTRACT

This work presents a numerical analysis of the gas dynamic problem of localized and steady energy addition to uniform high-speed airflows. Firstly, the general effects caused by a localized energy deposition on the flow were investigated, then an extensive parametric analysis concerning the effects of energy deposition rate and dispersion for different free stream flow speeds was performed. As a general result, localized and steady energy deposition generates compression waves and constant property flow stream tube downstream to the source. The parametric analysis results have shown that either increasing the rate or decreasing dispersion in the orthogonal direction to the flow of the deposited energy has the effect of enhancing property flow changes, which is even more pronounced for lower flow speeds. In contrast, energy dispersion in the flow direction has presented very little effect on the flow changes. The results of this numerical analysis should be very helpful in studies of energy addition applications in hypersonic.

KEYWORDS:
High speed flow; Energy addition; Flow control; Numerical analysis

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REFERENCES

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» http://cdlab2.fluid.tuwien.ac.at/LEHRE/TURB/Fluent.Inc/fluent6.3.26/help/html/ug/main_pre.htm
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Salvador, I.I. et al, 2007, “Surface Heat Flux and Pressure Distribution on a Hypersonic Blunt Body with DEAS”, Fifth International Symposium on Beamed Energy Propulsion, Vol. 997, pp. 367-37.
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Tannehill, J.C. et al, 1997, “Computational fluid mechanics and heat transfer”, Taylor and Francis, London, England, 792 p.

Publication Dates

Publication in this collection
Apr-Jun 2013

History

Received
03 Dec 2012
Accepted
10 Apr 2013

This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

[1] FLUENT INC., 2006, “FLUENT 6.3 User’s Guide”, Retrieved in May 03, 2013, from http://cdlab2.fluid.tuwien.ac.at/LEHRE/TURB/Fluent.Inc/fluent6.3.26/help/html/ug/main_pre.htm
» http://cdlab2.fluid.tuwien.ac.at/LEHRE/TURB/Fluent.Inc/fluent6.3.26/help/html/ug/main_pre.htm

[2] Fraile Jr., A.C., 2011, “Um estudo numerico da reducao de arrasto em corpos rombudos por adicao de energia em escoamentos de altas velocidades” (In Portuguese), Thesis, Instituto Tecnologico de Aeronautica, 128 p.

[3] Knight, D., 2003, “Survey of Aerodynamic Flow Control at High Speed by Energy Deposition”, 41st AIAA Aerospace Sciences Meeting and Exhibit, 19 p.

[4] Minucci, M.A.S. et al, 2005, “Laser-supported directed-energy ‘airspike’ in hypersonic flow”, Journal of Spacecraft and Rockets, Vol. 42, No. 1, pp. 51-57.

[5] Oliveira, A.C. et al, 2008a, “Bow shock wave mitigation by laserplasma energy addition in hypersonic flow”, Journal of Spacecraft and Rockets, Vol. 45, No. 5, pp. 921-927.

[6] Oliveira, A.C. et al, 2008b, “Drag Reduction by Laser-Plasma Energy Addition in Hypersonic Flow”, Fifth International Symposium on Beamed Energy Propulsion, Vol. 997, pp. 379-389.

[7] Oliveira, A.C., 2008c, “Investigacao experimental da adicao de energia por laser em escoamento hipersonico de baixa densidade” (In Portuguese), Thesis, Instituto Nacional de Pesquisas Espaciais, 202 p.

[8] Riggins, D.W. et al, 1999, “Blunt-body wave drag reduction using focused energy deposition”, AIAA Journal, Vol. 37, No. 4, pp. 460-467.

[9] Riggins, D.W., Nelson, H.F., 1999, “Hypersonic flow control using upstream focused energy deposition”, Aerospace Sciences Meeting & Exhibit, 37, Reno.

[10] Salvador, I.I. et al, 2005, “Experimental Analysis of Heat Flux to a Blunt Body in Hypersonic Flow with Upstream Laser Energy Deposition Preliminary Results”, 4th International Symposium on Beamed Energy Propulsion, Vol. 830, pp. 163-171.

[11] Salvador, I.I. et al, 2007, “Surface Heat Flux and Pressure Distribution on a Hypersonic Blunt Body with DEAS”, Fifth International Symposium on Beamed Energy Propulsion, Vol. 997, pp. 367-37.

[12] Salvador, I.I. et al, 2008, “Experimental Analysis of Heat Flux to a Blunt Body in Hypersonic Flow with Upstream Laser Energy Deposition”, Fifth International Symposium on Beamed Energy Propulsion, Vol. 997, pp. 379-389.

[13] Tannehill, J.C. et al, 1997, “Computational fluid mechanics and heat transfer”, Taylor and Francis, London, England, 792 p.

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