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Keywords: hydrofoil
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Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-542
... ABSTRACT The shallowly submerged hydrofoil often induces disturbances on the free surface, involving various physical phenomena and mechanisms. In this paper, we analyze the flow field around the hydrofoil under two different initial water depth conditions, revealing the suppression of wave...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-598
... of hydrofoil, and based on the relative thickness parameter, select the optimal hydrofoil. Therefore, based on STAR-CCM+, this paper adopts adaptive mesh technology to study the hydrodynamic performance and cavitation characteristics of hydrofoils with different relative thickness under different cavitation...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-310
... optimization design of two-dimensional (2D) hydrofoils by combining a machine learning method XGBoost and an intelligent optimization algorithm NSGAIII. The results show that the proposed multi-objective optimization design method can efficiently obtain the Pareto curve of optimal hydrofoil geometries...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-330
... artificial intelligence tether reliability geologist submarine glider coefficient modeling & simulation experiment accuracy geology hydrofoil buoyancy dynamic modeling worsen torque excitation sensor diagram case2 case3 case4 case5 case6 amplitude Proceedings...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-396
... ABSTRACT Vortex shedding of the NACA0009 hydrofoil with oblique truncation trailing edge was studied by three-dimensional (3D) and two-dimensional (2D) numerical simulation using the shear stress transport (SST) k-ω turbulence model. The vortex shedding formation process, the boundary layer...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-370
... ABSTRACT The flapping hydrofoil is widely used in the fields of wave energy capture and bionic propulsion, and its hydrodynamic characteristics are one of the factors that must be considered in the design process of the device. In this paper, the overlapping grid technology is used to simulate...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-554
... bionic propeller inspired by wings of bird and tail fins of fish. It is composed of a pair of hydrofoils which oscillate in opposite phase. (Knoller & Verein, 1909) and (Betz, 1912) first discovered the forward thrust generated by oscillating foil in 1909 and 1912 respectively, which was called...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-591
... risk with LES method for a Delft twist-11 hydrofoil Qian LIU1,2, Zi-ru LI1,2, Peng-peng HE1,2 1. Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Ministry of Education, P. R. China. 2. School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-314
... affecting the steering effect. It is therefore very important to study the hydrodynamic characteristics and structural characteristics of the flexible rudder under cavitating condition. There are two ways to fix the rudder: one is cantilever type fixed at one end (usually simplified as flexible hydrofoil...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-351
... of uniformly mixed water-air-bubble incoming flow on hydrodynamic performance of a two-dimensional NACA0012 hydrofoil by using the Computational Fluid Dynamics (CFD) method. Two-fluid method (TFM) is adopted to solve the mixed water-air-bubble multiphase flow field with the open-source CFD toolkit OpenFOAM...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-499
... passenger transportation cavitation inception number cavitation number marine transportation drag coefficient hydrofoil tip vortex cavitation clearance cavitation inception hydrofoil cavitation inception experimental study vortice cavitation vortex cavitation tip clearance...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-493
... of high-speed hydrofoils and marine propeller placed in a numerical pool with free surface is studied by numerical simulation. Based on the pressure reduction coefficient and cavitation number at the section of propeller blade at a certain immersion depth, the occurrence mechanism of cavitation...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-497
... ABSTRACT Underwater noise (URN) is the focus of academic research, and cavitation is an important source of underwater noise. This paper takes NACA66 (mod) two-dimensional hydrofoil as the research object, and uses the open source software OpenFOAM to simulate the sheet cavitation and sound...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-498
... achieved. In this work, we perform TVC simulation of wetted and cavitating flows around an elliptical hydrofoil with the cross section of NACA0012 and try to control the cavitation inception by injecting water. In order to capture the TVC induced by the hydrofoil, adaptive mesh refinement (AMR) method...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-500
... 66 pseudo-2D hydrofoil, and verifies the feasibility of the mesh scheme with the numerical results and experimental values. Then, taking hydrofoil with same relative thickness and different relative camber as the research object, the hydrodynamic performance and cavitation characteristics...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1156
... marine transportation flow field robot is upstream oil & gas different rotation rate robot artificial intelligence passenger transportation hydrofoil underwater robot move hydrodynamic performance main body rotation rate propeller thrust ducted propeller numerical result...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3176
... and convolutional neural network (CNN) algorithm”, are chosen to predict the lift and drag coefficients on hydrofoil NACA0012, respectively. The angle of attack (AOA) is considered as a variable. Two different forms are adopted to describe the variable. One is the degree itself and the other is a matrix based...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-4150
... of NACA0015 Hydrofoil Cavitation Using Different Turbulence Models Kaidong Ma1, Liushuai Cao1, Decheng Wan1*, Jing Xu2 1 Computational Marine Hydrodynamic Lab (CMHL), School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China 2 China Ship Development and Design...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-4154
... on flow field around a three-dimensional flexible hydrofoil Shunyuan Xu1, Jiaming Wu1, Chenghua Ma2, Hua Liao 2, Haotian Wang1, Tian Zhang1 1Department of Naval Architecture and Ocean Engineering South China University of Technology, Guangzhou, Guangdong province, China 2Guangzhou Shunhai Shipyards Ltd...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3218
... CFD Study of Tip Vortex Cavitation around Hydrofoil Shang Liang1, Decheng Wan1*, Changhong Hu2 1 Computational Marine Hydrodynamics Lab (CMHL), State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China 2...

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