...Santosh Kumar Singh; Pankaj Kumar Raushan; Pankaj Kumar; Koustuv Debnath This study examines the turbulent stress anisotropy tensor based on the Lumley triangle technique and eigenvalues in wave–current combined flows. The invariant functions are also presented at a different vertical location from...

...: koustuv@aero.iiests.ac.in Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the J ournal of O ffshore M echanics and A rctic E ngineering . 25 08 2019 14 05 2020 14 05 2020 01 07 2020 spectral energy turbulence wave...

...) conservative scheme is used to solve the governing equations written in curvilinear coordinates and the k-ɛ turbulence model is used to simulate the turbulent flow in the wake of the body. The cylinder is supported by a spring and a damper and free to vibrate in the transverse direction. In previous work...

... module (STM) for fluid-sediment interface tracking. The GNS model is based on the finite difference method with a turbulent stress model of large-eddy simulation to compute incompressible viscous multiphase flows. The STM is used to compute nonlinear sediment bed profile change due to bed-load sediment...

... and shoreline movements. The renormalization group turbulence model and detached eddy simulation multiscale model were used to simulate turbulence dissipation. The subaerial landslide is simulated using a sliding mass. Results from the two-dimensional simulations are compared with the results from a scaled-down...

... with the rough turbulent case. Examples are included to illustrate the applicability of the seabed shear stress spectrum for practical purposes using data typical for field conditions, both for very rough beds and mud beds. Sequences of time series of: near-bed orbital velocity u ( t ) (upper...

... of the inflow turbulence, the incident waves, and the turbine response. Prediction of accurate loads depends on assumptions made in the simulation models employed. While for the wind, inflow turbulence models are relatively well established; for wave input, the current practice is to model irregular (random...

... = 0.22 × 0.5 × p U 3 D L at 1.6 kn. Strong dependence of VIV on Reynolds number was proven for the first time due to the range of Reynolds numbers achieved at the Low-Turbulence Free Surface Water (LTFSW) Channel of the University of Michigan. In this paper, proximity of VIVACE cylinders in VIV...

... simulation turbulence model and for the Reynolds number cases of 10 6 we make use of the unsteady Reynolds-averaged Navier–Stokes equations with a two-layer k -epsilon turbulence model. The rough surface modifications of the two-layer k -epsilon turbulence model due to Durbin et al. (2001, “Rough Wall...

... Turbulence Free-Surface Water Channel of the University of Michigan to demonstrate the concept, generate electricity, measure the power out, and calculate basic benchmarking measures such as energy density. The tests performed were tailored to the particulars of the VIVACE modulo, which dictate...

... turbulence wakes wake cylinder flow induced stability drag Consider two long parallel circular cylinders, one downstream of the other, in a flow perpendicular to their axes, as shown in Fig. 1 . This configuration occurs with parallel risers attached to deepwater floating petroleum...

... the influence of wave heights on turbine long-term loads is smaller than that of wind speed, there is possible resonance of tower dynamics induced by the waves; still, to first order, it is largely the wind speed and turbulence intensity that control design loads. Predicted design loads based on the campaign...

... vorticity isosurfaces for flow past a fixed cylinder. Isosurfaces range [ − 4 , 4 ] . 17 04 2006 12 11 2006 vortices vibrations turbulence damping offshore installations structural engineering numerical analysis In practical applications, the Reynolds...

... sodium formate. This material has been widely used as a drilling and completion fluid in challenging environments such as in the Barents Sea. In this paper large-eddy simulations, of a turbulent flow in a solid–liquid, baffled, cylindrical mixing vessel with a large number of solid particles...

... circular cylinder. The model scale is 1:100, and for a Froudian scaled model, this gives a model Reynolds number of 1.5 × 10 8 ∕ 1000 = 1.5 × 10 5 . Thus, both flow fields fall in the turbulent region. However, the model flow field is in the subcritical range while that for the full...

...; final revision, April 2002. Associate Editor: S. Yim. 01 July 2001 01 April 2002 16 04 2003 structural engineering ocean waves hydrodynamics turbulence wakes marine vehicles design engineering stability criteria displacement control Marine production riser...

... received by the OMAE Division, November 20, 1999; revised manuscript received June 22, 2000. Associate Technical Editor: J. Falzarano. 20 November 1999 22 June 2000 vibrations structural engineering Navier-Stokes equations hydrodynamics turbulence simulation Incompressible...