Summary
The 3D Navier-Stokes solver TAU is coupled with linear stability analysis methods in order to predict flows including transition due to Tollmien-Schlichting (TS) and crossflow (CF) instabilities. The new simulation capability is investigated for an airfoil and compared with data of 2D boundary layer methods that include transition prediction based on a well-known envelope method and with experiments. The results indicate the levels of grid and residual convergence needed for accurate transition prediction. First applications of transition prediction in 3D for a 1:6 prolate spheroid are discussed. It is shown that transition calculations for fully 3D flows are numerical feasible and yield physically reasonable results for moderate angles of attack.
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Nebel, C., Radespiel, R., Haas, R. (2005). Transition Prediction for 2D and 3D Flows using the TAU-Code and N-Factor Methods. In: Kroll, N., Fassbender, J.K. (eds) MEGAFLOW - Numerical Flow Simulation for Aircraft Design. Notes on Numerical Fluid Mechanics and Multidisciplinary Design (NNFM), vol 89. Springer, Berlin, Heidelberg . https://doi.org/10.1007/3-540-32382-1_18
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DOI: https://doi.org/10.1007/3-540-32382-1_18
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