搜索结果: 1-15 共查到“船舶与海洋工程 method”相关记录49条 . 查询时间(0.14 秒)
Development of Method of Analysis of Sound Propagation Based on Parabolic Equation Method
Sound Propagation Parabolic Equation Method
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2009/8/19
Recently, we developed program of sound propagation in ocean water using the parabolic equation (PE) method based on wave theory. This method accurately analyzed long-range sound propagation in deep w...
Speed-Up of Acoustic Propagation Program by Time-Domain Difference Method Using a Supercomputer
Acoustic Propagation Program Time-Domain Difference Method Supercomputer
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2009/8/19
The FDTD (Finite Difference Time Domain) method is a simple and high-precision numerical method in the underwater acoustic field. For large-scale underwater acoustic field simulations with the FDTD me...
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
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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...
Phase Error and Pulse Propagation Time of Parabolic Equation Method
Phase Error Pulse Propagation Time Parabolic Equation Method
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2009/8/19
The application of the sound wave which propagates through long range in the ocean is studied to monitor global warming. Recently, parabolic equation method (PE method) is often used as a sound propag...
A Prediction Method of Travel Demand of Cruise Ships in Japan
Tour Selection Model Characteristic Tours Potential Share Cruising Demand Economical Analysis
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2009/5/19
In the present study, a new prediction method of travel demand of cruise ships is proposed in which the characteristic of each demand for choosing a tour, the characteristics of tours, and factors of ...
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
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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...
Application of the p-version Finite Element Method to Stress Singularity Field Problems
Finite Element Method Welding Crack Problem Stress Singularity Stress Intensity Factor
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2009/5/12
The stress singularity exists at the crack tip and the weld toe. The stress singularities are expressed by a term of −1/2 power of distance r from the singular point for the crack tip, and ͨ...
A Study of Fatigue Damage Estimation in Transverse Frame of Ship Hull Structure using Pattern Load Method
Pattern Load FPSO Fatigue Damage
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2009/5/12
The strength estimation of ship hull structures on the design-by-analysis including wave load, structural response and stochastic fatigue analysis is increasing in number recently due to the advance o...
A Method for Estimating Collapse Strength and Reliability of VeryLong Box-type Floating Platforms under Extreme Wave Loads
Collapsing Behavior Analysis Dominant Failure Mode Hydro-Elasticity Short-Term Prediction VLFP
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2009/5/12
This paper deals with a method for estimating collapsing behavior and reliability of very long box-type floating platforms (VLFP) under extreme wave loads. First, a simplified estimation method is pre...
Study on Estimation Method of Heat Transfer during Line-Heating Process by using Inverse Heat Conduction Analysis
Line-Heating Manufacturing Practice Heat Transfer Inverse Heat Conduction Analysis
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2009/5/12
The experimental results obtained in the previous reports lead us to a new hypothesis that the relative distribution of gas temperature and local heat transfer coefficient around the torch remain unch...
A Study on Estimation Method of Ship Rolling Motion with Flooded Water on Deck
Damage Stability Flooded Water Ro-Ro Passenger Ship Rolling Motion Estimation Method Model Experiments
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2009/5/12
This study investigates validity of a time domain simulation method of rolling motion of a Ro-Ro passenger ship with flooded water expressed by 2-dimensional lump mass concept. Model experiments with ...
A Study on Transverse Porpoising of a Planing Craft in Drifting Motion (2nd Report)—Simulation Method of Transverse Porpoising—
High-Speed Planing Craft Stability Transverse Porpoising Drift
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2009/5/12
Following the first report in which the characteristics of transverse porpoising of a drifting planing craft in calm water were experimentally shown and the mechanism of transverse porpoising was clar...
Prediction of Propulsive Performance of High-Speed Boats using a CFD Simulation Method (1st Report)
CFD Simulation High-Speed Boat Running Attitude Resistance Coefficient
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2009/5/12
The applicability of CFD simulations for the prediction of the propulsive performance characteristics of high-speed boats is examined. In this report, a CFD code, WIDSAN-VIII, is used for simulations ...
An Optimization Method for Full Form Ships Using a Simple Prediction of the Thrust Deduction Factor
Optimization Minimum Thrust Deduction Factor Nonlinear Programming
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2009/5/12
Developing full form ship with maximum efficiency self-propulsion factors (t: Thrust deduction factor, ωs: Wake fraction, ηr: Relative rotative efficiency) is as important as developing one with light...
A Method to Confirm Scale Effect of Stern Waves due to a Transom Stern
Stern Waves Scale Effect Scale Effect Confirmation Method Small Model Ships
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2009/5/12
When a ship with a wide immersed transom stern runs on a deeper draft, forward-oriented wave breaking often occurs just behind the transom stern. Stern waves in such condition can be considered to con...