Introduction
It is well known that external localized flow heating upstream of supersonic blunt bodies can help to reduce their wave drag and to save the thrust required for a supersonic flight. According to published results the power effectiveness ratio η, defined as the ratio of the thrust power saved to the heating power introduced, is the most-recognized dimensionless parameter quantifying this drag reduction effect.
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References
Schülein, E., Zheltovodov, A.A.: Effects of localized flow heating by arc discharge upstream of non-slender bodies. Shock Waves, 1–16 (2011), doi :10.1007/s00193-011-0307-1
Banuti, D., Hannemann, K.: Flow Control by Energy Deposition in Hypersonic Flow - Some Fundamental Considerations, AIAA Paper 2009-7345 (2009)
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Schülein, E., Bornhöft, E. (2012). Potential of Localized Flow Heating for Wave Drag Reduction. In: Kontis, K. (eds) 28th International Symposium on Shock Waves. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25688-2_93
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DOI: https://doi.org/10.1007/978-3-642-25688-2_93
Publisher Name: Springer, Berlin, Heidelberg
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