[PDF] Top 20 Simulation of vortex induced vibration of a bluff body structure

... cylindrical body oscillating transversely to a free stream is due to its relevance to vortex-induced vibration ...a body is placed in a flow and the fluctuating lift force due the ... See full document

... Vortex-induced vibration is a vibration phenomenon which occurred to the bluff body structure either on the ground or sea ...transverse vibration of bluff ... See full document

... Important vortex-induced vibration (VIV) parameters including the amplitude responses, orbital trajectories, oscillation frequencies and vorticity contours are ...(CFD) simulation results are ... See full document

... Fig. 4 shows the computational mesh for the finite element analysis (FEA) of the present FSI simulation. The scale of the FEA model has been modified in order to clearly view the deflection of the model. Fig. 4 ... See full document

... Fluid Structure Interaction is the phenomenon that occurs at the interphase between an object and the surrounding environment ...and structure motion. The mechanism that causes elastic structure to ... See full document

... Differences between the capabilities of the applied tur- bulence approach is further emphasised in the prediction of external wake structures. Three-dimensional struc- tures are visualised using the Q-criterion method ... See full document

... a bluff cylinder is placed into a flow, the Karman vortex street will occur behind the bluff ...Karman vortex, a flow causes oscillation and fluid force transmits it to the bluff ...the ... See full document

... Slitty bluff body is widely used as a high-performance flame holder in power ...slitty bluff body in cold state was numerically investigated using the renormalization group (RNG) k-ε model at ... See full document

... present simulation results from the WRF-LES model with a modification to include passive tracer transport and ...(SBL) simulation which is, as far as the authors can tell, the first of its kind in ... See full document

... past bluff cylindrical bodies have received by far the greatest atten- ...Vibrations induced by the periodic shedding of vortices are those that most frequently occur in engineering ...practice. ... See full document

... wake structure is well-captured by the CFD ...the vortex core position for the lower leg of the ring vortex sitting slightly too low in the CFD simulation, due to reduced up-wash lower ...the ... See full document

... of vortex-induced vibrations (VIV) of the Storebælt Bridge, it is evident that a better understanding of the aerodynamics of these geometries is ...of vortex shedding. It is shown that the wake ... See full document

... the body or the cylinder is said to be under resonance ...the vortex shedding frequency due to fluid flow. The body that undergoes resonance due to flow induced vibration transmits the ... See full document

... the vortex flowmeter has its own disadvantage ...two bluff bodies in tandem showed that there was considerable improvement in vortex ...shape bluff bodies ...optimum vortex shedding. ... See full document

... discrete vortex method for viscous flow ...singularity-free vortex panel method is used to satisfy local body boundary conditions ...discrete vortex method makes it challenging to map ... See full document

... respect to middle span with three and six half-sine waves, respectively. Based on the same given fluid-structure parameters, empirical coefficients and initial conditions as before, the response comparison in Fig. ... See full document

... Inflation is very important for the new wall area or boundary layer mesh. Figure 2 show the plain meshing without inflation and detail sizing at some important area. Figure 3 show the meshing with inflation and nozzle ... See full document

... To the aim of minimizing the computational time effort, a reduced- order model describing the hydrodynamic-elastic cylinder interaction is now developed, by assuming that both the fluid (i.e. wake) and the riser ... See full document

... a bluff body, and the Reynolds number of that fluid ...the vortex weakens is due to its opposing sign, fluid b enters the feeding shear layer and cuts off the further circulation to the growing ... See full document

... There are several possible sources of error in our measurements of loudness that make our measurements of SPL preliminary (Fig.4). Only one microphone was used in our setup which, as a result of wind tunnel constraints, ... See full document