搜索结果: 136-150 共查到“知识库 船舶原理”相关记录185条 . 查询时间(4.237 秒)
On Influence of Propeller Geometry on Underwater Noise of Propellers
Propeller Underwater Noise Cavitation Highly Skewed Propeller Propeller Design
2009/5/12
Low-level noise propellers with a higher propulsion performance are required lower incipient cavitation number of tip vortex cavitation and even if tip vortex cavitation is developed, to depress the u...
Influence of Surface Properties of Coatings to Frictional Resistance
Frictional Drag Reduction Self-Polishing Paint Water-Repellent Paint Sand Roughness Scale Effect
2009/5/12
In order to clarify correlation between properties of coating on ship hull surfaces and frictional resistance, experimental studies were carried out. A rotating cylinder type dynamometer was newly dev...
Effect of Transom Stern Bottom Profile Form on Stern Wave Resistance
Transom Stern Bottom Profile Form Stern Wave Resistance Model Test Small Model Ships
2009/5/12
When a ship with a wide immersed transom stern runs on a deeper draft than its design draft, forward-oriented wave breaking often occurs just behind the transom stern. The phenomenon accompanies large...
Fuzzy Modelling of Facial-Expression Analysis for Evaluating Ride Comfort
Facial-Expression Ride Comfort Fuzzy Modelling FD
2009/4/30
The authors have developed an evaluation method of facial expression for evaluating ride quality of vehicles. They demonstrated that facial expression can be quantitatively characterised by introduci...
Effect of Corrosion on Static Strength of Hull Structural Members (9th Report)
Static Strength Hull Structural Members DOP
2009/4/30
The aim of this research project is to establish a method of evaluating the effect of pitting corrosion with a circular cone shape on local strength of hold frames of bulk carriers. In the present stu...
Study on Tramper Allocation Planning Using Genetic Algorithm
Tramper Allocation Genetic Algorithm system
2009/4/29
Tramper allocation is important and difficult work operation because it affects heavily on transport efficiency and stability although a lot of factors must be considered carefully and properly. Some ...
Gain-Scheduled Control of a Flexible Marine Riser under Hydrodynamical Damping Force Varying with the Upper End Velocity
Flexible Marine Riser hydrodynamical Upper End Velocity
2009/4/29
In the entry/reentry operation of the flexible marine riser, the operators are required to connect its lower end to the blowout preventer at the seabed quickly with both its top connected angle and it...
Constraint Loss Correction for Assessment of Brittle Fracture Initiation in Residual Stress Field Based on the Weibull Stress Criterion
Constraint Loss Correction Brittle Fracture Initiation Residual Stress Field Weibull Stress Criterion
2009/4/24
This paper studies the method for estimating the welding residual stress effect on brittle fracture of structural steel based on the Weibull stress criterion. Using wide plate (WP) specimens with and ...
Development of an affix-type multipoint pressure sensor by use of FBG-2nd Report: Multipoint pressure measurements on the surface of model ship in resistance test-
affix-type multipoint pressure sensor Multipoint pressure measurements model ship
2009/4/22
An affix-type multipoint pressure sensor was developed by using the Fiber Bragg Grating (FBG) technology. In the 1st report, the measurement system of FBG pressure sensor was described and the perform...
Development of Time Domain VIV Response Analysis Method Based on Measured VIV Hydrodynamic Force
Time Domain VIV Response Analysis Method Measured VIV Hydrodynamic Force
2009/4/21
A time domain analysis method of Vortex Induced Vibration (VIV) was developed for risers and towing pipes with curvature. Risers are increasingly installed in deepwater and catenary shape is used util...
Investigation on Correlation Lines through the Analyses of Geosim Model Test Results
Correlation Lines Geosim Model Test Results
2009/4/9
The present paper, at first, presents the author's understanding of the problem caused by the use of ITTC (International Towing Tank Conference) 1957 Line in conjunction with three-dimensional analysi...
Model Experiments on Extreme Motions of a Wave-Piercing Tumblehome Vessel in Following and Quartering Waves
Wave-Piercing Tumblehome Vessel Quartering Waves
2009/4/7
This paper reports model experiments of a wave-piercing tumblehome hull in following and quartering waves for examining the applicability of a system-based simulation model proposed by the authors to ...
Numerical Analysis of Cylindrical Structure VIV Response by Discrete Vertex Method
Cylindrical Structure VIV Discrete Vertex Method
2009/4/3
A quasi 3 dimensional VIV response analysis method which combined 2 dimensional hydrodynamic force simulation by discrete vortex method with 3 dimensional finite element method has been proposed. Use ...
On a Computing Method for Nonlinear Free Surface Flow Causing Spray Ejection
Computing Method Nonlinear Free Surface Flow Spray Ejection
2009/4/2
On the numerical simulation using the BEM, the computational disadvantage by dealing with the particular fluid domain due to the jet flow is discussed and the adaptive schemes for robust time-donain c...
Numerical Simulation of Dynamic Response of Structure Caused by Impact Pressure Using an Eulerian Scheme with Lagrangian Particles
Dynamic Response Eulerian Scheme Lagrangian Particles
2009/4/2
We have developed a new numerical scheme that combines a Eulerian scheme with Lagrangian particles to compute fluid-structure interaction caused by impact pressure. The proposed numerical model was ap...