Numerical Prediction of Hydrodynamic Performance of Planing Trimaran with a Wave-Piercing Bow
Science and Technology on Underwater Vehicle Laboratory, Harbin Engineering University, Harbin 150001, China
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J. Mar. Sci. Eng. 2020, 8(11), 897; https://doi.org/10.3390/jmse8110897
Received: 11 October 2020
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Revised: 4 November 2020
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Accepted: 9 November 2020
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Published: 10 November 2020
(This article belongs to the Section Ocean Engineering)
The central hull is the most important structure in the planing trimaran. In order to gain insight into the relationship between hydrodynamic performance and main hull shape, experimental tests and numerical simulations were carried out for volume Froude Number (FrΔ) ranging from 1.31 to 4.98. Dynamic sinkage and trim in the Dynamic Fluid Body Interaction (DFBI) six-degree-of-freedom model were considered. A validation study carried out by comparison of experimental test results with numerical results showed good consistency. To analyze the process of tunnel penetration and pressure change at the bottom of the boat, numerical simulation results for free surface, bottom streamline, and pressure distribution around the hull are given. A large triangular high-pressure area was observed in the front of the main hull for all volume Froude numbers. Consequently, the central drainage body, in reference to the profile of single planing craft with distinctive resistance performance, was redesigned into a wave-piercing shape. Total resistance, sinkage, and trim angle of the new model were then predicted by numerical method. The results show that the central drainage body has a significant impact on the hydrodynamic performance of the planing trimaran. Furthermore, the wave-piercing shaped main hull has a drag reduction effect.
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MDPI and ACS Style
Su, G.; Shen, H.; Su, Y. Numerical Prediction of Hydrodynamic Performance of Planing Trimaran with a Wave-Piercing Bow. J. Mar. Sci. Eng. 2020, 8, 897. https://doi.org/10.3390/jmse8110897
AMA Style
Su G, Shen H, Su Y. Numerical Prediction of Hydrodynamic Performance of Planing Trimaran with a Wave-Piercing Bow. Journal of Marine Science and Engineering. 2020; 8(11):897. https://doi.org/10.3390/jmse8110897
Chicago/Turabian StyleSu, Guangsheng, Hailong Shen, and Yumin Su. 2020. "Numerical Prediction of Hydrodynamic Performance of Planing Trimaran with a Wave-Piercing Bow" Journal of Marine Science and Engineering 8, no. 11: 897. https://doi.org/10.3390/jmse8110897
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