TY - GEN
T1 - Nonlinear viscous wavefields generated by a piston-type wavemaker
AU - Huang, Ching Jer
AU - Zhang, En Cheng
AU - Lee, Jaw Fang
N1 - Funding Information:
This research is supported by the National Science Council of Taiwan under the contract no. NSC-83-0209-E-006-014.
Publisher Copyright:
© 1995 by The International Society of Offshore and Polar Engineers.
PY - 1995
Y1 - 1995
N2 - A numerical scheme is developed to solve the unsteady, two-dimensional Navier-Stokes equations using the exact free surface boundary conditions for determining viscous wavefields generated by a piston-type wavemaker. The SUMMAC method for treating the free surface has been further modified to extrapolate the velocity components at free surface more accurately. For a piston wavemaker, both small- and large-amplitude waves can be simulated by the present numerical scheme. The process of the wave formation is shown in detail. For verifying the accuracy of the numerical results, the numerical wave profiles are compared with both analytical and experimental results. For small wave steepness, our numerical results coincide with theoretical and experimental results. For large wave steepness, the numerical wave heights are a little lower than the experimental ones. In the worst case, the deviation is about 6%.
AB - A numerical scheme is developed to solve the unsteady, two-dimensional Navier-Stokes equations using the exact free surface boundary conditions for determining viscous wavefields generated by a piston-type wavemaker. The SUMMAC method for treating the free surface has been further modified to extrapolate the velocity components at free surface more accurately. For a piston wavemaker, both small- and large-amplitude waves can be simulated by the present numerical scheme. The process of the wave formation is shown in detail. For verifying the accuracy of the numerical results, the numerical wave profiles are compared with both analytical and experimental results. For small wave steepness, our numerical results coincide with theoretical and experimental results. For large wave steepness, the numerical wave heights are a little lower than the experimental ones. In the worst case, the deviation is about 6%.
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M3 - Conference contribution
AN - SCOPUS:85054859777
SN - 1880653168
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 34
EP - 41
BT - 5th International Offshore and Polar Engineering Conference, ISOPE 1995
PB - International Society of Offshore and Polar Engineers
T2 - 5th International Offshore and Polar Engineering Conference, ISOPE 1995
Y2 - 11 June 1995 through 16 June 1995
ER -