Hydrodynamic behavior of offshore floating structures is of fundamental practical importance to engineers and designers. Physical modelling of offshore structures in hydrodynamic laboratory is a common practice in this field. Due to the increasing in the computer power and the development of the numerical algorithms, the use of the numerical wave tanks (NWT) have become a complementary tool to the model tests. The knowledge of the drawbacks of numerical model is an important issue for engineers and researchers, especially in the models whose governing equations do not have exact solution. This work presents the application of numerical model to simulate the generation and propagation of regular waves in the LabOcean Basin (LabOceano/ COPPE/UFRJ) using the commercial code Ansys-CFX. A cross-section of the offshore basin have been used. Waves have been generated by flap type wavemaker. Period wave in the range from 1.75 to 3.00 seconds have been simulated. For all tests, the analytical wave steepness is smaller than 0.017. Numerical results have been compared with Stokes wave theory and experimental data obtained in the offshore basin. Both the behavior of the free surface and the reflection coefficient have been evaluated. Good agreement was found for the wave profile, mean wave height and mean wave period. Divergences between numerical and experimental results were found evaluating the reflection parameters.
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ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering
July 1–6, 2012
Rio de Janeiro, Brazil
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4492-2
PROCEEDINGS PAPER
Numerical Simulations of Regular Waves in a Hydrodynamic Laboratory Basin
Monica Campos Silva
,
Monica Campos Silva
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Marcelo de Araújo Vitola
,
Marcelo de Araújo Vitola
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Waldir Terra Pinto
,
Waldir Terra Pinto
Federal University of Rio Grande, Rio Grande, RS, Brazil
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Carlos Antônio Levi
Carlos Antônio Levi
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Monica Campos Silva
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Marcelo de Araújo Vitola
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Waldir Terra Pinto
Federal University of Rio Grande, Rio Grande, RS, Brazil
Carlos Antônio Levi
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Paper No:
OMAE2012-83830, pp. 883-889; 7 pages
Published Online:
August 23, 2013
Citation
Silva, MC, de Araújo Vitola, M, Pinto, WT, & Levi, CA. "Numerical Simulations of Regular Waves in a Hydrodynamic Laboratory Basin." Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. Volume 5: Ocean Engineering; CFD and VIV. Rio de Janeiro, Brazil. July 1–6, 2012. pp. 883-889. ASME. https://doi.org/10.1115/OMAE2012-83830
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