An experimental study on the inline wave force on a truncated vertical cylinder

2015 ◽  
Vol 15 (1) ◽  
pp. 39-52 ◽  
Author(s):  
Hong Xiong ◽  
Jianmin Yang ◽  
Xinliang Tian
Keyword(s):  
Experimental Study ◽  
Vertical Cylinder ◽  
Wave Force

On Wave Force Coefficient Variability

1987 ◽  
Vol 109 (4) ◽  
pp. 295-306 ◽  
Author(s):  
J. H. Nath
Keyword(s):  
Phase Angle ◽  
Vortex Shedding ◽  
Vertical Cylinder ◽  
Wave Force ◽  
Maximum Force ◽  
Periodic Waves ◽  
Force Coefficient ◽  
Ambient Flow ◽  
Smooth Cylinder ◽  
Phase Differences

Wave force coefficient variability for cylinders, from wave to wave in a train of periodic waves, has been shown to be dependent on the phase of the force record relative to the ambient flow. The phase varies due to vortex shedding, but the maximum force is approximately constant as seen from this work and the work of other investigators. Thus, the maximum force coefficient is tightly organized according to the Keulegan-Carpenter number and scatter is seen in the phase angle versus Keulegan-Carpenter number. On the other hand, both Cd and Cm have scatter due to these phase differences from wave to wave. For unknown reasons, even when averaged over several wave cycles there is scatter in the results for Cd and Cm. This investigation shows that the maximum force coefficients for a heavily roughened vertical cylinder are tightly arranged according to the Keulegan-Carpenter number and the period parameter. Furthermore, the phase angle is similarly much more organized than for the smooth cylinder.

scholarly journals Experimental Study for Directional Wave Force on a Column

1994 ◽  
Vol 10 ◽  
pp. 277-282 ◽  
Author(s):  
Yasumasa Suzuki ◽  
Tetsuya Hiraishi ◽  
Yasuhiro Tomita
Keyword(s):  
Experimental Study ◽  
Wave Force ◽  
Directional Wave

Experimental Study on the Wave Loads on Monopile and Jacket Type Support of Offshore Wind Turbines

2018 ◽  
Author(s):  
Jing Zhang ◽  
Qin Liu ◽  
Xing Hua Shi ◽  
C. Guedes Soares
Keyword(s):  
Experimental Study ◽  
Wind Turbine ◽  
Nonlinear Wave ◽  
Wave Force ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Wave Forces ◽  
Wave Loads ◽  
Morison Equation ◽  
Offshore Wind Turbines

As the offshore fixed wind turbine developed, more ones will be installed in the sea field with the depth 15–50 meters. Wave force will be one of the main forces that dominate the design of the wind turbine base, which is calculated using the Morison equation traditionally. This method can predict the wave forces for the small cylinders if the drag and inertia coefficients are obtained accurately. This paper will give a series scaled tests of monopile and jacket type base of the offshore wind turbine in tank to study the nonlinear wave loads.

Second-Order Diffraction Loads on Plural Vertical Cylinder With Arbitrary Cross Sections

1987 ◽  
Vol 109 (4) ◽  
pp. 314-319
Author(s):  
K. Masuda ◽  
W. Kato ◽  
H. Ishizuka
Keyword(s):  
Boundary Value Problem ◽  
Cross Sections ◽  
Present Method ◽  
Boundary Value ◽  
Vertical Cylinder ◽  
Wave Force ◽  
Second Order ◽  
Wave Forces ◽  
Order Diffraction ◽  
Rectangular Cylinders

The purpose of the present study is development of a powerful numerical method for calculating second-order diffraction loads on plural vertical cylinder with arbitrary cross sections. According to the present method, second-order wave force can be obtained from a linear radiation potential without solving second-order boundary value problem. The boundary value problem for the radiation potential is solved with the hybrid boundary element method. The computations for circular and rectangular cylinders were carried out and compared with the experiments. In addition, second-order wave forces on twin circular cylinder are calculated with the present method.

Sign in / Sign up

Export Citation Format

Share Document