established that the results for wave–ice interaction problems apply to problems associated with gravity wave interaction with VLFSs. Squire, “ Past, present and impendent hydroelastic challenges in the polar and subpolar seas,” Philos. Squire, “ Of ocean waves and sea-ice revisited,” Cold Reg. proposed the study of a wave–ice interaction problem considering the floating ice as an elastic plate. Kheysin, “ On the problem of the elastic-plastic bending of an ice cover,” Tr. investigated numerous applications, ongoing research, and developments on the use of VLFSs over the past two decades. Tay, “ Very large floating structures: Applications, research and development,” Procedia Eng. Toffoli, “ Hydroelastic interactions between water waves and floating freshwater ice,” Phys. Meylan, “ Time-dependent motion of a floating circular elastic plate,” Fluids 6, 29 (2021). Chwang, “ Scattering of surface waves by a semi-infinite floating elastic plate,” Phys. Several features of wave interaction with very large floating structures (VLFSs) were analyzed by Sahoo et al., 1 1. Usually, structural and hydrodynamic analyses are performed individually to analyze wave-induced structural responses of large floating structures in regular waves. Compared to rigid body analysis, the main advantage of the hydroelasticity theory is the more accurate realization of the fluid–structure interaction system. In the last few decades, there have been significant developments in the theory of hydroelasticity. Furthermore, plate deflections are exhibited for different wave and structural parameters. The detailed behavior of the roots of the dispersion equation and the mode shapes are illustrated through contour plots and by analyzing the roots’ loci. However, the phase velocity vanishes, and the group velocity becomes continuous irrespective of the value of non-zero viscous damping at the buckling limit for the compressive force. In the presence of viscous damping, wave blocking does not happen before the buckling limit of the compressive force. The complex wave modes are classified as predominant progressive wave modes and rapidly decaying modes. On the other hand, the flexural gravity wave modes become complex in the presence of a viscoelastic foundation. Moreover, the study reveals that irrespective of the values of viscous damping constant, the blocking/buckling points shift to a higher wavenumber with an increase in the value of elastic foundation constant. Within wave blocking and plate buckling limit in the presence of compressive force, three distinct propagating modes occur in the absence of viscous damping. During wave blocking, the group velocity vanishes, and mode swapping occurs. Flexural gravity wave blocking occurs for specific values of the compressive force in the absence of viscous damping. Furthermore, agreement in dispersion behaviour was found when straight pipe flow experiments were compared with the wheel matching the energy dissipation rate.A hydroelastic model is developed to study the interaction of linear long gravity waves with a very large floating flexible plate resting on a viscoelastic foundation, which is based on the Kelvin–Voigt model. The sensitivity of the results indicated that the wheel qualifies as a characterization tool for dispersion properties. Furthermore, the effect of temperature, pressure and water cut on dispersion properties was demonstrated. Two fluid systems, a realistic fluid system consisting of a light crude oil, synthetic natural gas and brine, and a model system consisting of a mineral oil, tap water and nitrogen as gas phase were investigated. Onset of dispersion and the stability of emulsions formed was identified by interpreting torque profiles supported by visual observations. Several different flow conditions were simulated by varying the rotational speed. By rotating the device in vertical orientation, a gravity driven flow is initiated. The so-called Wheel Flow Loop consists of a wheel-shaped closed pipe section that can be filled with gas, oil and water. The work describes how a quasi-endless wheel flow loop can be used to study dispersion formation, development and stability at different pressures and temperatures.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |