Numerical Simulation of Channel Flow Transition: Resolution Requirements and Structure of the Hairpin VortexNational Aeronautics and Space Administration, Scientific and Technical Information Branch, 1987 - Boundary layer control - 66 pages |
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32 FFDM 32 grid aliased calculations Biringen boundary layer Boundary-Layer Transition channel flow Chebyshev coarse grid Comput critical layer de-aliased calculation detached shear layer dimensional TS wave Fasel FCBM code FFDM calculation Figure 17 Figure 20 finite-difference method Floquet theory flow geometry Fluid Mech Fourier harmonic grid points hairpin vortex Hama Helicity contours higher Reynolds number Hussaini 1985a initial amplitude K-type transition K-type vortex k₂ Kinetic energy lambda vortices Langley Research Center Log energy low Reynolds number Navier-Stokes Equations number of grid Numerical Simulation oscillations peak plane left sec per step secondary instability spanwise direction Spectral Method Squire mode stages streamwise direction streamwise velocity stretching and diffusion structure subharmonic Taylor-Couette Flow three-dimensional wave ticity tion Tollmien-Schlichting waves transition process two-dimensional TS wave vortex loop right Vortex stretching rate vorticity component Vorticity contours wave numbers X/L₁ X/L₁₂ X/L₂ X/Lx XILx Z-direction Z/L₂ Z/Lz Zang and Hussaini