Spanwise-localised arrowhead travelling waves are identified via symmetry-breaking bifurcation and modulational instability as candidate building blocks for elastic turbulence in rectilinear sheared polymer flows.
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In axis-switching elliptical jets, the main coherent structure shifts from a pre-switch flapping mode to a post-switch flapping mode, with the transition frequency rising as forcing level increases.
Phase-shifting dealiasing cancels aliasing errors in pseudo-spectral Navier-Stokes solvers by evaluating nonlinear terms on shifted grids, achieving up to 3x speedup over 2/3 truncation with small accuracy loss on Taylor-Green and forced isotropic turbulence tests.
citing papers explorer
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Localised Arrowheads: The building blocks of elastic turbulence in rectilinear, sheared polymer flows
Spanwise-localised arrowhead travelling waves are identified via symmetry-breaking bifurcation and modulational instability as candidate building blocks for elastic turbulence in rectilinear sheared polymer flows.
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Coherent structures in axis-switching elliptical jets
In axis-switching elliptical jets, the main coherent structure shifts from a pre-switch flapping mode to a post-switch flapping mode, with the transition frequency rising as forcing level increases.
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Aliasing and phase shifting in pseudo-spectral simulations of the incompressible Navier-Stokes equations
Phase-shifting dealiasing cancels aliasing errors in pseudo-spectral Navier-Stokes solvers by evaluating nonlinear terms on shifted grids, achieving up to 3x speedup over 2/3 truncation with small accuracy loss on Taylor-Green and forced isotropic turbulence tests.