Uniform theory of the boundary diffraction wave

2009 ◽  
Vol 41 (3) ◽  
pp. 285-288 ◽  
Author(s):  
Yusuf Z. Umul
Keyword(s):  
Diffraction Wave

The coastal refraction-diffraction wave propagation model

1995 ◽  
Vol 17 (4) ◽  
pp. 6-12
Author(s):  
Nguyen Tien Dat ◽  
Dinh Van Manh ◽  
Nguyen Minh Son
Keyword(s):  
Wave Propagation ◽  
Field Data ◽  
Surf Zone ◽  
Propagation Model ◽  
Wave Transformation ◽  
Diffraction Effect ◽  
Linear Wave ◽  
Diffraction Wave ◽  
Linear Wave Propagation ◽  
Wave Propagation Model

A mathematical model on linear wave propagation toward shore is chosen and corresponding software is built. The wave transformation outside and inside the surf zone is considered including the diffraction effect. The model is tested by laboratory and field data and gave reasonables results.

Direct visualization of Young’s boundary diffraction wave

2007 ◽  
Vol 276 (1) ◽  
pp. 54-57 ◽  
Author(s):  
Raj Kumar ◽  
Sushil K. Kaura ◽  
D.P. Chhachhia ◽  
A.K. Aggarwal
Keyword(s):  
Direct Visualization ◽  
Diffraction Wave

Dynamic Instability in Quartering Seas: The Behavior of a Ship During Broaching

1996 ◽  
Vol 40 (01) ◽  
pp. 46-59 ◽  
Author(s):  
K. J. Spyrou
Keyword(s):  
Steady State ◽  
Transient Analysis ◽  
Dynamic Instability ◽  
Dynamical Analysis ◽  
Wave Excitation ◽  
Periodic Motions ◽  
Regular Waves ◽  
Limit Sets ◽  
Diffraction Wave ◽  
Surf Riding

The dynamic stability of ships encountering large regular waves from astern is analyzed, with focus on delineating the specific conditions leading to the uncontrolled turn identified as broaching. The problem's formulation takes into account motions of the actively steered or controls-fixed vessel in surge-sway-yaw-roll with consideration of Froude-Krylov and diffraction wave excitation. Dynamical analysis of surf-riding is carried out for the general case of quartering waves, exploring the route periodic motions—surf riding, loss of stationary stability, turn, capsize. Steady-state and transient analysis is carried out in the system's multidimensional state-space in order to identify all existing limit sets and locate attracting domains. Broaching from periodic motions is also a part of the investigation.

Influence of Feeding Guide′s Straightness Errors of Grating Ruling Machine on Diffraction Wave-Front of Grating and Intensity of Stray Light

2015 ◽  
Vol 35 (5) ◽  
pp. 0506005
Author(s):  
黄元申 Huang Yuanshen ◽  
黄运柏 Huang Yunbai ◽  
杨海马 Yang Haima ◽  
李柏承 Li Baicheng ◽  
苏仰庆 Su Yangqing ◽  
...  
Keyword(s):  
Wave Front ◽  
Stray Light ◽  
Diffraction Wave

scholarly journals Wave field reconstruction and phase imaging by electron diffractive imaging

Microscopy ◽  
2020 ◽  
Author(s):  
Jun Yamasaki
Keyword(s):  
Wave Field ◽  
Real Space ◽  
Phase Image ◽  
Phase Imaging ◽  
Diffractive Imaging ◽  
Diffraction Wave ◽  
Phase Images ◽  
Applicable Range ◽  
The Fourier Transform

Abstract In electron diffractive imaging, the phase image of a sample is reconstructed from its diffraction intensity through iterative calculations. The principle of this method is based on the Fourier transform relation between the real-space wave field transmitted by the sample and its Fraunhofer diffraction wave field. Since Gerchberg’s experimental work in 1972, various advancements have been achieved, which have substantially improved the quality of the reconstructed phase images and extended the applicable range of the method. In this review article, the principle of diffractive imaging, various experimental processes using electron beams and application to specific samples are explained in detail.

Removing the Residual Zeroth-Order Diffraction Wave in Polarization-Based Parallel Phase-Shifting Digital Holography System

2011 ◽  
Vol 4 (7) ◽  
pp. 072501 ◽  
Author(s):  
Peng Xia ◽  
Tatsuki Tahara ◽  
Motofumi Fujii ◽  
Takashi Kakue ◽  
Yasuhiro Awatsuji ◽  
...  
Keyword(s):  
Digital Holography ◽  
Phase Shifting ◽  
Zeroth Order ◽  
Order Diffraction ◽  
Diffraction Wave
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