Local Similarity Method for Aerodynamics Calculation at Low Supersonic Flight Speed
https://doi.org/10.18384/2949-5067-2025-4-100
Abstract
Aim. Verification of local similarity method for calculating the aerodynamics of aircraft at low supersonic speeds.
Methodology. The primary criterion for developing this method is minimal computation time. The method is based on the hypothesis of locality, i. e. aerodynamic characteristics of each surface element are calculated independently. The proposed technique for aerodynamics calculation is a combination of well-known methods widely-used in supersonic flow around a thin plate and a flexible mechanism for their application taking into account the curvature of the aircraft surface.
Results. The technique proposed has been verified on s cone, a slender body of revolution and a thin straight wing. The verification has been carried by comparing with numerical simulation results and existing techniques of aerodynamics calculation. Good agreement between the aerodynamic coefficient values and the numerical calculation results was demonstrated.
Research implications. The technique considered is supposed to be used to make preliminary assessment of the aerodynamics of an aircraft at low supersonic flight speeds, followed by their refinement using more accurate methods.
Supporting agencies: The numerical experiments were performed with the use of resources of the Equipment Sharing Center “Mekhanika” (Mechanics) based at ITAM SB RAS and of the Siberian Branch of the Russian Academy of Sciences Siberian Supercomputer Center. This study was performed within the framework of the State Contract of the Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences (ITAM SB RAS) (№124021400040-4)
About the Authors
D. Polevshchikov
Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the RAS
Russian Federation
Russian Federation
Danila P. Polevshikov, Research Engineer
Laboratory No. 7
Novosibirsk
A. Kashkovsky
Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the RAS
Russian Federation
Russian Federation
Aleksandr V. Kashkovsky, Cand. Sci. (Engineering), Senior Researcher
Laboratory No. 7
Novosibirsk
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