... , Reynolds number Re, mass ratio m *, and damping ratio ξ on VIVs have been discussed (Xu-Xu et al., 2016 and Kumar et al., 2018). Williamson and Govardhan (2004) have reviewed the research on the VIV of the single cylinder. The vibration frequency lock to the natural frequency of the cylinder system...

... vortex-induced vibration current velocity vibration frequency frequency case 2 riser amplitude case 1 upstream oil & gas vibration mode surge motion inline vibration mode equation excitation platform motion sway motion time series Proceedings of the Thirty-first (2021...

... characteristics under several conditions: the initial distance between materials, vibration frequency, and amplitude. We used some key parameters, such as aspect ratio, connection setup between hybrid devices, and initial distance, to obtain high electric performance and high efficiency. We found that both PENG...

... the velocity ratio of internal flow against external current varies. The results from dynamic analysis indicate that the internal flow does play a greatly important part in determining the typical VIV characteristics of the riser including vibration amplitude, vibration frequency and the dominant mode in both...

.... As a result, a good coincidence of the mode shape and vibration frequency was confirmed between the model test and the simulation. In addition to this, full scale VIV simulations of SLWR and Steel Catenary Riser (SCR) were conducted in frequency domain. From the result, it was shown that VIV mode shapes...

.... Vortices generates and sheds alternately from both sides of the riser leading to a periodic vortex-induced pressure around the riser. The riser vibrates under the effect of the pressure and the vibration also affects the flow field around. When the vibration frequency is close to the natural frequency...

...), the peak amplitude is found at KB=0.00563, where the comparison between the vibration frequency and the natural frequency of the plate implies the effect of both the first - and second- bending modes; it is also found that the plate vibration is nonlinear and the orbit of the tip presents a Figure-8...

.... Finally, wavelet analyses of the cross-flow displacements are given in Fig. 10. The relative in-line vibrations are dominated by the inertial forces and the vibration frequencies are confined to the forced oscillating frequency. Consequently, the wavelet analyses of in-line vibrations are not provided...

... to 2.5, the gap ratios G ranging from 0.2 to 1.0, Cl's non-dimensional vibration amplitudes A 1 ranging from 0.025 to 0.1, and Cl's non-dimensional vibration frequency f 1 ranging from 0.05 to 2.4. Through the FFT analyses of C2's displacement, the study finds that C2's frequency domain consist...

... shedding frequency. cross-flow arm rms amplitude coefficient cross-flow direction vibration frequency mass ratio linearly fn 0 drag coefficient amplitude inline direction experiment tendency buoyancy motion frequency stationary circular cylinder circular cylinder frequency...

... output in high vibration frequency. Parallel connection of piezoelectric chip and suitable external resistance can bring about better working performance of the test prototype. There is an optimal thickness ratio (shim thickness to overall thickness) for better working performances of the generator...

... vibration stiffness force coefficient cylinder artificial intelligence vibration frequency upstream oil & gas lock-in region coefficient inline experiment frequency response natural frequency vortex-induced vibration frequency riser Experimental Study of Flow-Induced Vibration (VIV...

... vibration undergoes a jump at certain values of Vr, at which the streamwise vibrating frequency is twice as much as the transverse one. However, when the streamwise vibration does not experience a jump, its frequency is the same as that of the transverse vibration. The maximum values of second streamwise...

.... They concluded that there existed a quadratic relationship between in-line and cross-flow motion. Triantafyllou, Techet, Hover, and Yue (2003) tested rigid and flexible cylinders at a Reynolds number of 30,000. vibration frequency load cell reynolds number natural frequency upstream oil & gas...

... erosion hannover sandy bottom investigation cylinder gauge settlement diameter sensor horizontal pipeline wave flume experiment dursthoff offshore pipeline vibration frequency Proceedings of the Seventh (1997) International Offshore and Polar Engineering Conference Honolulu, USA, May 25...

... of a load-dependent vector basis (Nour-Omid and Clough, 1985) is somewhat similar to the basic algorithm (Nour-Omid and Clough, 1984). factorization clough block lanczo algorithm matrix offshore structure basic lanczo frequency vibration frequency contribution vector ritz-lanczo vector...