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http://dx.doi.org/10.5139/JKSAS.2017.45.1.1

A Quasi-Steady Method for Unsteady Flows over Surfaces with Structural Deformation  

Kim, Minsoo (Inha University)
Lee, Namhun (Inha University)
Lee, Hak-Tae (Inha University)
Lee, Seungsoo (Inha University)
Kim, Heon-Ju (Agency for Defense Development)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.45, no.1, 2017 , pp. 1-9 More about this Journal
Abstract
In this paper, we present and verify an aerodynamic reduced-order model (ROM) based on a quasi-steady flow method to reduce the computational cost of supersonic aeroelastic analysis. For supersonic flows, especially when the characteristic time scale of the flow is small compared to that of the structural motion, the unsteadiness of flow can be negligible, and quasi-steady solutions can be used instead of the unsteady solutions for the aeroelastic analysis. Kriging method is used to build the ROM of the aerodynamics. The surface solutions from the ROM are used as the boundary conditions for the structural analysis at each time-step. The ROM is validated against the unsteady solutions.
Keywords
Reduced-order Model; Piston Theory; Quasi-steady; Aeroelastic Analysis; Supersonic; Kriging Method;
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