Results 81 to 90 of about 75,374 (303)

Numerical Comparison of Piston-, Flap-, and Double-Flap-Type Wave Makers in a Numerical Wave Tank

Journal of Marine Science and Engineering
In naval and ocean engineering, accurate simulation of incident waves is essential for predicting the motion response of offshore structures. Traditional wave generation methods, such as piston- and flap-type wave makers, often face challenges in ...
Kaicheng Yan, Haoyu Dou, Jungkeun Oh, Daewon Seo   +3 more
doaj   +1 more source

Effects of boundary layer and liquid viscosity and compressible air on sloshing characteristics

International Journal of Naval Architecture and Ocean Engineering, 2015
In this paper, numerical investigations for tank sloshing, based on commercial CFD package FLUENT, are performed to study effects of boundary layer grid, liquid viscosity and compressible air on sloshing pressure, wave height and rising time of impact ...
Chang-Fang Zou, De-Yu Wang, Zhong-Hua Cai   +2 more
doaj   +1 more source

On the relaxation approach for wave absorption in numerical wave tanks [PDF]

Ocean Engineering, 2019
Abstract In CFD modelling, relaxation methods are widely used in numerical wave tanks (NWTs) for wave absorption; however, this method can be very expensive as part of the NWT must be dedicated to a relaxation zone. In this short technical note, a parametric study on the effects of the relaxation approach on absorbing different types of waves is ...
Chen, Qiang, Kelly, David M, Zang, Jun
openaire   +1 more source

Spectral up- and downshifting of Akhmediev breathers under wind forcing

, 2017
We experimentally and numerically investigate the effect of wind forcing on the spectral dynamics of Akhmediev breathers, a wave-type known to model the modulation instability.
A. Chabchoub, A. Lemoine, Akhmediev N., C. Kharif, D. Eeltink, H. Branger, J. D. Carter, J. Kasparian, M. Brunetti, Massel S. R., O. Kimmoun, Osborne A., Trulsen K., Tulin M. P.   +13 more
core   +4 more sources

Predicting the breaking onset of surface water waves [PDF]

, 2015
Why do ocean waves break? Understanding this important and obvious property of the ocean surface has been elusive for decades. This paper investigates causes which lead deep-water two-dimensional initially monochromatic waves to break.
Babanin, Alexander V, Chalikov, Dmitry, Savelyev, Ivan, Young, Ian R   +3 more
core   +1 more source

Integrated Ultrasound Device for Precision Bladder Volume Monitoring via Acoustic Focusing and Machine Learning

Advanced Science, EarlyView.
We present a conformable wearable ultrasound patch for noninvasive bladder volume monitoring. A flexible PZT array combined with a concave acoustic lens concentrates acoustic energy and improves depth selectivity through the anterior pelvic wall.
Long Long Cao, Feng Wen Wang, Jingwei Xue, Fulei Liu, Ming Liang Jin   +4 more
wiley   +1 more source

Nonlinear wave transmission and pressure on the fixed truncated breakwater using NURBS numerical wave tank

Latin American Journal of Solids and Structures
Fully nonlinear wave interaction with a fixed breakwater is investigated in a numerical wave tank (NWT). The potential theory and high-order boundary element method are used to solve the boundary value problem.
Arash Abbasnia, Mahmoud Ghiasi
doaj   +1 more source

Higher-order Spectral Method for Regular and Irregular Wave Simulations

한국해양공학회지, 2020
In this study, a nonlinear wave simulation code is developed using a higher-order spectral (HOS) method. The HOS method is very efficient because it can determine the solution of the boundary value problem using fast Fourier transform (FFT) without ...
Seunghoon Oh, Jae-Hwan Jung, Seok-Kyu Cho   +2 more
doaj   +1 more source

Hydrodynamics of the Oscillating Wave Surge Converter in the open ocean [PDF]

, 2012
A potential flow model is derived for a large flap-type oscillating wave energy converter in the open ocean. Application of the Green's integral theorem in the fluid domain yields a hypersingular integral equation for the jump in potential across the ...
Dias, F., Renzi, E.
core   +2 more sources

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

Advanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source