Summary
The unsteady three-dimensional flow field over an oscillating, 65° swept delta wing is investigated by the numerical solution of the compressible, time-dependent, Reynolds-averaged Navier-Stokes equations. The spatial discretization is performed with a Jameson-based finite volume scheme using structured grids. The time integration is done by a modified version of the dual time stepping scheme, which is stable for arbitrarily large and small time steps. All unsteady calculations have been carried out in a hyperbolic C-O type mesh consisting of 2,016,657 grid points and using the Baldwin-Lomax turbulence model with the Degani-Schiff modification. The resolution in time was 24 time steps per cycle, giving an increment of 15° in the phase angle. Results are presented for the low speed testcase (M=0.4, Re=3* 106) at α0=9° and α0=15° for the reduced frequency ω*=0.56 and oscillation amplitudes of Δα=3° and Δα=6°.
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© 1999 Springer Fachmedien Wiesbaden
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Fritz, W. (1999). Numerical Simulation of Unsteady Vortical Flow about Delta Wings Oscillating at High Incidence. In: Nitsche, W., Heinemann, HJ., Hilbig, R. (eds) New Results in Numerical and Experimental Fluid Mechanics II. Notes on Numerical Fluid Mechanics (NNFM), vol 72. Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-663-10901-3_22
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DOI: https://doi.org/10.1007/978-3-663-10901-3_22
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
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