The Experts below are selected from a list of 9927 Experts worldwide ranked by ideXlab platform
H.-c. Shen - One of the best experts on this subject based on the ideXlab platform.
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Development and experimental study of a new Submarine Guide Vane Propeller system
Chuan Bo Li Xue Journal of Ship Mechanics, 2001Co-Authors: H.-z. Yao, H.-c. ShenAbstract:Submarine Guide Vane Propeller is a new device developed by CSSRC to improve powering performance and reduce propeller - radiated noise of submarine. It is composed of propeller and guide vane, the latter is installed at an appropriate position between stem appendages and propeller. By interactions among stem appendages, Main Hull and the guide vane, the inflow of propeller is adjusted, so that the energy losses in propeller and the unsteady forces and radiated noise can be reduced. In our research it is shown that the new device can increase submarine maximum speed by 0.3 ∼ 0.5 knots and reduce propeller radiated noise by 2 ∼ 4 dB.
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DEVELOPMENT AND EXPERIMENTAL STUDY OF A NOVEL SUBMARINE GUIDE VANE PROPELLER SYSTEM
2001Co-Authors: H.-z. Yao, H.-c. ShenAbstract:Submarine guide vane propeller is a new device developed by the China Ship Scientific Research Center (CSSRC) in order to improve powering performance and reduce propeller-radiated noise of submarines. It is composed of propeller and guide vane. The guide vane is installed at an appropriate position between stern appendages and the propeller. By interactions among stern appendages, Main Hull and the guide vane, the inflow of the propeller is adjusted so that energy losses in the propeller and the unsteady forces and radiated noise can be reduced. The paper shows that the new device can increase submarine maximum speed by 0.3-0.5 knots and reduce the propeller radiated noise by 2-4 decibels.
H.-z. Yao - One of the best experts on this subject based on the ideXlab platform.
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Development and experimental study of a new Submarine Guide Vane Propeller system
Chuan Bo Li Xue Journal of Ship Mechanics, 2001Co-Authors: H.-z. Yao, H.-c. ShenAbstract:Submarine Guide Vane Propeller is a new device developed by CSSRC to improve powering performance and reduce propeller - radiated noise of submarine. It is composed of propeller and guide vane, the latter is installed at an appropriate position between stem appendages and propeller. By interactions among stem appendages, Main Hull and the guide vane, the inflow of propeller is adjusted, so that the energy losses in propeller and the unsteady forces and radiated noise can be reduced. In our research it is shown that the new device can increase submarine maximum speed by 0.3 ∼ 0.5 knots and reduce propeller radiated noise by 2 ∼ 4 dB.
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DEVELOPMENT AND EXPERIMENTAL STUDY OF A NOVEL SUBMARINE GUIDE VANE PROPELLER SYSTEM
2001Co-Authors: H.-z. Yao, H.-c. ShenAbstract:Submarine guide vane propeller is a new device developed by the China Ship Scientific Research Center (CSSRC) in order to improve powering performance and reduce propeller-radiated noise of submarines. It is composed of propeller and guide vane. The guide vane is installed at an appropriate position between stern appendages and the propeller. By interactions among stern appendages, Main Hull and the guide vane, the inflow of the propeller is adjusted so that energy losses in the propeller and the unsteady forces and radiated noise can be reduced. The paper shows that the new device can increase submarine maximum speed by 0.3-0.5 knots and reduce the propeller radiated noise by 2-4 decibels.
Yanlin Huang - One of the best experts on this subject based on the ideXlab platform.
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Experimental Study and Numerical Simulation on Slamming of High-Speed Trimaran
29th International Conference on Ocean Offshore and Arctic Engineering: Volume 2, 2010Co-Authors: Xiangshao Kong, Yuanzhou Zheng, Yanlin HuangAbstract:The study on slamming of high speed trimaran is a very complicated and significant topic. Ship slamming is a nonlinear unsteady problem in which dynamic boundary and coupling among structure, air and water should be considered. It is a key issue in the ship research field. Unlike the slamming of ordinary monoHull, trimaran slamming include not only Main Hull bottom slamming, but also slamming of trimaran cross structure, which makes trimaran slamming more complicated. In this paper, a reduced scale model of trimaran was constructed and an experiment was carried out in order to study the slamming pressure distribution on Main Hull and cross structure. By using nonlinear simulation software Autodyn, a finite element model was established to simulate the process that trimaran model enters into water. The accuracy and reliability of numerical simulation is validated by comparing experimental data and numerical simulation results. Furthermore, some valuable conclusions on trimaran slamming are obtained.Copyright © 2010 by ASME
H.q. Shi - One of the best experts on this subject based on the ideXlab platform.
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Model experiments of a trimaran with transom stern
International shipbuilding progress, 2009Co-Authors: J.b. Jia, Z. Zong, H.q. ShiAbstract:This study was initiated due to the lack of published experimental data on transom stern trimaran capability. The feasibility of the model experiments was examined and a series of model tests were carried out in the towing tank of Department of Naval Architecture, Dalian University of Technology. The study concentrates on the resistance and seakeeping characteristics of transom stern trimaran. A set of configurations of the trimaran over a range of Froude numbers were tested and the results were compared. Some conclusions can be drawn as below. The wave resistance and heave response can be reduced by placing the side Hulls towards the stern and the Main Hull at high speeds. The pitch motion response can be depressed effectively by increasing the distance between the Main Hull and the side Hulls. Furthermore, the breadth of trimaran is a sensitive parameter to roll, and the amplitude of roll angle is reduced along with the increase of trimaran breadth.
Kazuo Suzuki - One of the best experts on this subject based on the ideXlab platform.
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optimum positions of outriggers of high speed trimaran with slender Main Hull from viewpoint of wave making resistance
横浜国立大学工学部紀要, 1996Co-Authors: Kazuo SuzukiAbstract:In the present study, a trimaran with small outriggers at both sides is introduced as a high-speed ship of multiHull type. In the case of the trimaran, the wave making interaction between the Main Hull and outriggers is expected to reduce the wave making resistance. For a practical slender Main Hull, positions of small outriggers are optimized from the viewpoint of wave making resistance, and models are tested in a towing tank to verify hydrodynamical effects of outriggers.
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STUDIES ON MINIMIZATION OF WAVE MAKING RESISTANCE FOR HIGH SPEED TRIMARAN WITH SMALL OUTRIGGERS
Journal of the Society of Naval Architects of Japan, 1995Co-Authors: Kazuo Suzuki, Mitsuhisa IkehataAbstract:In this study, a trimaran with small outriggers at both sides is introduced in place of the catamaran. In a trimaran, the wave making interaction between the Main Hull and outriggers is expected to reduce the wave making resistance. The position of the small outriggers is optimized for optimum wave making resistance by means of a nonlinear programming technique. For fundamental studies of the problem, mathematical Hull forms are employed as the Main Hull and outriggrers. For more practical studies, the high speed Hull form of the slender displacement type proposed by Takarada et al is also introduced as the Main Hull, and similar studies to previous studies carried out. In both studies, model tests based on the optimization results are carried out to verify the hydrodynamical effect of outriggers, including towing tests, wave analyses, and measurements of trim and sinkage.
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FUNDAMENTAL STUDY ON OPTIMUM POSITION OF OUTRIGGERS OF TRIMARAN FROM VIEW POINT OF WAVE MAKING RESISTANCE
1993Co-Authors: Kazuo Suzuki, Mitsuhisa IkehataAbstract:In place of the catamaran, this paper introduces a trimaran with small outriggers at both sides. The wave making resistance interaction between the Main Hull and outriggers is expected to reduce the wave resistance. The positions of the small outriggers are optimized from the view point of the minimization of wave resistance by means of nonlinear programming. The mathematical Hull form whose water lines and frame lines are cosine curve and parabolic curve respectively is adopted for this fundamental study of the trimaran. Model tests based on the optimization results are carried out to verify the hydrodynamic effect of outriggers, including towing tests, wave analyses, and measurements of trim and sinkage.
