In the original publication the third author name is published incorrectly as“Hayatdavoodi Masoud”.The correct author name should be read as“Masoud Hayatdavoodi”.The correct author name is available in this correc...In the original publication the third author name is published incorrectly as“Hayatdavoodi Masoud”.The correct author name should be read as“Masoud Hayatdavoodi”.The correct author name is available in this correction.展开更多
Structural integrity has remained a challenge for design and analysis of wave energy devices.A difficulty in assessment of the structural integrity is often laid in the accurate determination of the wave-induced loads...Structural integrity has remained a challenge for design and analysis of wave energy devices.A difficulty in assessment of the structural integrity is often laid in the accurate determination of the wave-induced loads on the wave energy devices and the repones of the structure.Decoupled hydroelastic response of a submerged,oscillating wave energy device to extreme nonlinear wave loads is studied here.The submerged wave energy device consists of an oscillating horizontal disc attached to a direct-drive power take-off system.The structural frame of the wave energy device is fixed on the seafloor in shallow water.Several extreme wave conditions are considered in this study.The nonlinear wave loads on members of the submerged structure are obtained by use of the level I Green-Naghdi equations and Morison’s equation for cylindrical members.Distribution of Von Mises stresses and the elastic response of the structure to the extreme wave loads are determined by use of a finite element method.The decoupled hydroelastic analysis of the structure is carried out for devices built by four different materials,namely stainless steel,concrete,aluminium alloy,and titanium alloy.The elastic response of these devices is studied and results are compared with each other.Points of maximum stress and deformations are determined and the structural integrity under the extreme conditions is assessed.It is shown that the proposed approaches provide invaluable information about the structural integrity of wave energy devices.展开更多
In this paper,steady solutions of solitary waves in the presence of nonuniform shear currents are obtained by use of the high-level Green-Naghdi(HLGN)model.We focus on large-amplitude solitary waves in strong opposing...In this paper,steady solutions of solitary waves in the presence of nonuniform shear currents are obtained by use of the high-level Green-Naghdi(HLGN)model.We focus on large-amplitude solitary waves in strong opposing shear currents.The linear-type currents,quadratic-type currents and cubic-type currents are considered.In particular,the wave speed,wave profile,velocity field,particle trajectories and vorticity distribution are studied.It is demonstrated that presence of the nonuniform shear current modifies the velocity field and vorticity field of the solitary wave.展开更多
文摘In the original publication the third author name is published incorrectly as“Hayatdavoodi Masoud”.The correct author name should be read as“Masoud Hayatdavoodi”.The correct author name is available in this correction.
文摘Structural integrity has remained a challenge for design and analysis of wave energy devices.A difficulty in assessment of the structural integrity is often laid in the accurate determination of the wave-induced loads on the wave energy devices and the repones of the structure.Decoupled hydroelastic response of a submerged,oscillating wave energy device to extreme nonlinear wave loads is studied here.The submerged wave energy device consists of an oscillating horizontal disc attached to a direct-drive power take-off system.The structural frame of the wave energy device is fixed on the seafloor in shallow water.Several extreme wave conditions are considered in this study.The nonlinear wave loads on members of the submerged structure are obtained by use of the level I Green-Naghdi equations and Morison’s equation for cylindrical members.Distribution of Von Mises stresses and the elastic response of the structure to the extreme wave loads are determined by use of a finite element method.The decoupled hydroelastic analysis of the structure is carried out for devices built by four different materials,namely stainless steel,concrete,aluminium alloy,and titanium alloy.The elastic response of these devices is studied and results are compared with each other.Points of maximum stress and deformations are determined and the structural integrity under the extreme conditions is assessed.It is shown that the proposed approaches provide invaluable information about the structural integrity of wave energy devices.
基金Supported by the National Natural Science Foundation of China(Nos.11772099,11972126,11572093 and 51490671).
文摘In this paper,steady solutions of solitary waves in the presence of nonuniform shear currents are obtained by use of the high-level Green-Naghdi(HLGN)model.We focus on large-amplitude solitary waves in strong opposing shear currents.The linear-type currents,quadratic-type currents and cubic-type currents are considered.In particular,the wave speed,wave profile,velocity field,particle trajectories and vorticity distribution are studied.It is demonstrated that presence of the nonuniform shear current modifies the velocity field and vorticity field of the solitary wave.
