Vortex mode selection of a rigid cylinder subject to VIV at low mass-damping

Riser modal identification in CFD and full-scale experiments

“…(8) are computed by a parallel three-dimensional Navier-Stokes solver, NkTar, based on the spectral/hp element method (Karniadakis and Sherwin, 1999) and used for various VIV applications (Lucor et al, 2001(Lucor et al, , 2003(Lucor et al, , 2005Dong and Karniadakis, 2005). This version of the code employs a hybrid scheme utilizing Fourier collocation in the spanwise z-direction (cylinder axis) and Jacobi-Galerkin formulation on (x-y)-planes perpendicular to the cylinder axis.…”

“…By definition, DNS data can provide a very detailed description of the response as well as the hydrodynamic forces both in the spatial and temporal domains. This is particularly true for structures with short or moderately long aspect ratios (Lucor et al, 2001(Lucor et al, , 2005. Here, however, the structure is too long to meet the DNS spanwise resolution requirement.…”

Numerical simulation of vortex-induced vibration of a circular cylinder at low mass-damping using RANS code

“…Moreover, few numerical studies have reported the 2P mode (Blackburn et al, 2001;Lucor et al, 2005), much less on the vortex-shedding mode transition through the lock-in region. The debate remains on the existence of the 2P mode as a steady-state pattern.…”

High order conservative differencing for viscous terms and the application to vortex-induced vibration flows

“…DNS based on spectral element methods are employed in Refs. [27][28][29]. The Beam-Warming central difference scheme is employed to solve the compressible NS equations in [30].…”