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Speed-Up of Acoustic Propagation Program by Time-Domain Difference Method Using a Supercomputer
Acoustic Propagation Program Time-Domain Difference Method Supercomputer
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...
Phase Error and Pulse Propagation Time of Parabolic Equation Method
Phase Error Pulse Propagation Time Parabolic Equation Method
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...
Fiber Bragg Grating Hydrophone Array using Feedback Control Circuit: Time-division Multiplexed and Thermally Stabilized Operation
Hydrophone Acoustic sensor Fiber optic sensor
2009/8/19
A novel fiber Bragg grating (FBG) hydrophone array has been proposed in order to realize multipoint underwater sound detection with thermal stabilization. The interrogation technique of the FBG hydrop...
Estimations of Motions and Added Wave Resistance of Ships Advancing in Waves by a Time-Domain Hybrid Method
a time-domain hybrid motions wave resistance of ships
2009/4/29
In this paper, we apply the method to simulate ship motions in regular head waves and also to estimate added wave resistance for four ships; two modified Wigley models, Series-60 (Cb = 0.6) and Series...
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...