搜索结果: 1-15 共查到“船舶与海洋工程 Surface”相关记录20条 . 查询时间(0.219 秒)
Influence by Shear Wave of Ice with Sea-surface to Sound Propagation Characteristics in Arctic Ocean using Elastic Parabolic Equation Method
Shear Wave of Ice Sound Propagation Characteristics Elastic Parabolic Equation Method
2009/8/19
Characteristics of pulse propagation in Arctic Ocean were calculated by elastic Parabolic Equation (PE) method based on rotated Pade approximation. It was assumed that the transmitter was placed at 10...
On the Characteristics of an Absorbing Wavemaker with a Cross Section Having a Plumb Part near the Free Surface
Absorbing Wavemaker Active Wave Absorption FIR Digital Filter Absorption Efficiency Cross Section with a Plumb Part near the Free Surface Wave Reflection
2009/5/18
The characteristics of a plunger absorbing wavemaker are studied. In the present wave absorption system the wavemaker is controlled to absorb the incoming waves by means of digital filtering of wave e...
The Experiment and Numerical Calculation of Propeller Performance with Surface Roughness Effects
Propeller Performance Surface Roughness Boundary Layer
2009/5/18
As well known, propeller and hull of ship are fouled and their surface are roughened due to various causes such as adhesion of sea-lives, painting degradation, cavitation erosion etc. The surface roug...
Free Surface Potential Flow around Multi-Hulls in Shallow Water Using a Potential Based Panel Method
Wave Making Resistance Lifting Body Shallow Water Free Surface Boundary Element Method Sinkage and Trim
2009/5/18
The present paper investigates the shallow water effect on the hydrodynamic characteristics of lifting body such as wave resistance, sinkage and trim using a potential based boundary element method. T...
Variational Principle for Determining the Unknown Wetted Surface of a Planing Ship in Periodic Motion
Plaining Plate Unknown Wetted Length Radiation Problem Adjoint Variational Principle Reverse Flow
2009/5/12
A variational principle is presented to solve the boundary-value problem with the unknown wetted surface of a planing ship in periodic motion. The boundary-value problem is solvable uniquely under the...
Experimental Study on Propulsive Performance of Surface Piercing Propeller
Surface Piercing Propeller Horizontal Rake Angle of Propeller Shaft Immersion Ratio Propeller Efficiency Design Chart High Speed Vessel
2009/5/12
It is generally known that the screw propeller has the highest efficiency in the marine propulsive devices. For fully submerged propeller it is well known that cavitation phenomena on propeller blades...
Wave Making Resistance of Ships in Shallow Water Based on Second Order Free Surface Condition with Sinkage and Trim Effects
Resistance Boundary Element Method Shallow Water Morino Perturbation Method Free-Surface Flow
2009/5/12
The problem of free surface potential flow around a ship in shallow water is subjected to linearized form of free surface condition and kinematic conditions on the body and bottom surface. The solutio...
A Study of On-Board Monitoring and Analysis System of Ship Propulsion Performance-An Estimation Method of Propeller Performance with Surface Roughness Effects
Propeller Performance Surface Roughness Ship Propulsion Performance Monitoring
2009/5/12
The propulsion performance of actual ship at sea tends to deteriorate mainly due to the fouling of hull and propeller. It is important, therefore, to monitor the present situation of ship propulsion p...
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...
Fully Automatic 3-dimensional Hexahedral Mesh Generation- Improved Whisker Weaving Method with Surface Mesh Modification Procedure
Hexahedral Mesh Generation Whisker Weaving Method Surface Mesh Modification Procedure
2009/4/30
In this paper, a new strategy of fully automatic hexahedral mesh generation is proposed. In this strategy, the prerequisite for generating hexahedral is quadrilateral surface mesh. From the given sur...
Calculation of Steady Cavitation on a Marine Propeller Using a Simple Surface Panel Method
Steady Cavitation Marine Propeller Simple Surface Panel Method
2009/4/27
This paper presents a calculation method for the steady cavitating propeller problem. The method is based on a simplified surface panel method "SQCM" which satisfies the Kutta condition at a time even...
Development and Demonstration of CAD/CFD/Optimizer Integrated Simulation-Based Design Framework by Using High-Fidelity Viscous Free-Surface RaNS Equation Solver
CAD/CFD/Optimizer Integrated Simulation-Based Design Framework High-Fidelity Viscous Free-Surface RaNS Equation Solver
2009/4/23
This paper, for the first time, describes development and demonstration of a CAD/CFD/optimizer-integrated simulation-based design (SBD) framework by introducing an advanced CAD system direct control a...
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...
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...
Sea Surface Wave Observation by using CW Doppler Radar and Effect of Radar irradiation Width
Sea Surface Wave CW Doppler Radar Effect of Radar irradiation Width
2009/4/1
Sea surface waves had been observed remotely by using a continuous wave (CW) X-band microwave Doppler radar at off Hiratsuka of Sagami-bay. A new algorithm was applied to retrieve a sea surface elevat...