Log in

Relevant bibliographies by topics / Wave condition / Journal articles

To see the other types of publications on this topic, follow the link: Wave condition.

Journal articles on the topic 'Wave condition'

Author: Grafiati

Published: 18 May 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Wave condition.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Mori, Nobuhito, Hajime Mase, and Tomohiro Yasuda. "FREAK WAVE AND WEATHER CONDITION." Coastal Engineering Proceedings 1, no. 32 (2011): 70. http://dx.doi.org/10.9753/icce.v32.waves.70.

Full text

Abstract:

The kurtosis of the surface elevation, Benjamin-Feir Index (BFI) and directional spread are measures of nonlinear four-wave interactions and freak waves. The dependence of kurtosis, BFI and directional spread under typhoon conditions are examined by numerical simulations. The BFI is significantly large in the fourth quadrant of the typhoon while the directional spread is small in the fourth quadrant. It was found that the potentially possible area of freak wave occurrence is the fourth quadrant of the typhoon rather than the other quadrants.

APA, Harvard, Vancouver, ISO, and other styles

2

Yu, Wen, Fenggang Wang, Jianguo Lin, and Dong Li. "Numerical Simulation of the Force Acting on the Riser by Two Internal Solitary Waves." Applied Sciences 12, no. 10 (2022): 4873. http://dx.doi.org/10.3390/app12104873.

Full text

Abstract:

An internal wave is a typical dynamic process. As an internal wave, an internal solitary wave usually occurs between two layers of fluids with different densities. Compared with general internal waves, internal solitary waves have large amplitudes, fast propagation speeds, short-wave periods, and often have tremendous energy. The propagation causes strong convergence and divergence of seawater and generates a sudden strong current. Due to its various characteristics, the propagation of internal solitary waves can cause serious harm to offshore engineering structures. Therefore, studying the ef

APA, Harvard, Vancouver, ISO, and other styles

3

Tang, Haoyun, Huilong Ren, Hui Li, and Qi Zhong. "Experimental Investigation of Wave-Induced Hydroelastic Vibrations of Trimaran in Oblique Irregular Waves." Shock and Vibration 2016 (2016): 1–17. http://dx.doi.org/10.1155/2016/8794560.

Full text

Abstract:

The irregular wave condition, especially the oblique irregular wave condition, is the actual circumstances when trimaran is sailing in sea. In order to identify the characteristic of the wave-induced hydroelastic vibration in irregular waves, as well as investigate the change of vibration in different oblique irregular wave conditions, trimaran model tests were conducted to measure vibrations, wave impact, and motion under different azimuth and wave height. The vibration on main hull, side hull, and cross-desk is measured and analyzed separately to observe the influence of irregular wave in di

APA, Harvard, Vancouver, ISO, and other styles

4

Stresswave Technology Ltd. "Stress wave condition monitoring." NDT & E International 23, no. 4 (1990): 240. http://dx.doi.org/10.1016/0963-8695(90)90978-r.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Stresswave Technology Ltd. "Stress wave condition monitoring." NDT International 23, no. 4 (1990): 240. http://dx.doi.org/10.1016/0308-9126(90)91714-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Ismail, Mohd Arif, Nik Mohd Ridzuan Shaharuddin, Omar Yaakob, et al. "WAKE WASH OF A FAST SMALL BOAT IN RESTRICTED WATERS: MODEL TESTS AND FULL-SCALE MEASUREMENTS." Brodogradnja 73, no. 2 (2022): 93–119. http://dx.doi.org/10.21278/brod73206.

Full text

Abstract:

This paper presents the model testing of an 8.23m boat with hard chine planning hull generated waves at the Kilim recreational park. Wake is considered one of the main causes of riverbank erosion due to the energy carried by waves hitting the riverbank. Initially, ship particulars were measured from actual boats to generate a hull form using MAXSURF software. A lines plan was then generated to fabricate the model using fibreglass. Experiments were conducted in the National Hydraulic Research Institute of Malaysia (NAHRIM) at various speeds at a constant operating draft. The wave patterns gener

APA, Harvard, Vancouver, ISO, and other styles

7

Lamacz, A., and B. Schweizer. "Outgoing wave conditions in photonic crystals and transmission properties at interfaces." ESAIM: Mathematical Modelling and Numerical Analysis 52, no. 5 (2018): 1913–45. http://dx.doi.org/10.1051/m2an/2018026.

Full text

Abstract:

We analyze the propagation of waves in unbounded photonic crystals. Waves are described by a Helmholtz equation with x-dependent coefficients, the scattering problem must be completed with a radiation condition at infinity. We develop an outgoing wave condition with the help of a Bloch wave expansion. Our radiation condition admits a uniqueness result, formulated in terms of the Bloch measure of solutions. We use the new radiation condition to analyze the transmission problem where, at fixed frequency, a wave hits the interface between free space and a photonic crystal. We show that the vertic

APA, Harvard, Vancouver, ISO, and other styles

8

Randall, C. J. "Absorbing boundary condition for the elastic wave equation." GEOPHYSICS 53, no. 5 (1988): 611–24. http://dx.doi.org/10.1190/1.1442496.

Full text

Abstract:

Extant absorbing boundary conditions for the elastic wave equation are generally effective only for waves nearly normally incident upon the boundary. High reflectivity is exhibited for waves traveling obliquely to the boundary. In this paper, a new and efficient absorbing boundary condition for two‐dimensional and three‐dimensional finite‐difference calculations of elastic wave propagation is presented. Compressional and shear components of the incident vector displacement fields are separated by calculating intermediary scalar potentials, allowing the use of Lindman’s boundary condition for s

APA, Harvard, Vancouver, ISO, and other styles

9

Taniguchi, Kenji. "Variations in Winter Ocean Wave Climate in the Japan Sea under the Global Warming Condition." Journal of Marine Science and Engineering 7, no. 5 (2019): 150. http://dx.doi.org/10.3390/jmse7050150.

Full text

Abstract:

Future variations in the ocean wave climate caused by global warming could affect various coastal issues. Using a third-generation wave model, this study produced projections of the ocean wave climate for winter around Japan, focusing on the Japan Sea side. Wave simulation forcing (sea surface wind) was generated through five different global warming experiments. More than half the future wave projections showed an increasing tendency of the climatological mean significant wave height during winter. However, the maximum significant wave height did not show any clear tendency in future variatio

APA, Harvard, Vancouver, ISO, and other styles

10

Shin, Changsoo. "Sponge boundary condition for frequency‐domain modeling." GEOPHYSICS 60, no. 6 (1995): 1870–74. http://dx.doi.org/10.1190/1.1443918.

Full text

Abstract:

Several techniques have been developed to get rid of edge reflections from artificial boundaries. One of them is to use paraxial approximations of the scalar and elastic wave equations. The other is to attenuate the seismic waves inside the artificial boundary by a gradual reduction of amplitudes. These techniques have been successfully applied to minimize unwanted seismic waves for time‐domain seismic modeling. Unlike time‐domain seismic modeling, suppression of edge reflections from artificial boundaries has not been successful in frequency‐domain seismic modeling. Rayleigh waves caused by c

APA, Harvard, Vancouver, ISO, and other styles

11

Li, Lei, P. W. Chan, Lijie Zhang, and Fei Hu. "Numerical Simulation of a Lee Wave Case over Three-Dimensional Mountainous Terrain under Strong Wind Condition." Advances in Meteorology 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/304321.

Full text

Abstract:

This study of a lee wave event over three-dimensional (3D) mountainous terrain in Lantau Island, Hong Kong, using a simulation combining mesoscale model and computational fluid dynamics (CFD) model has shown that (1) 3D steep mountainous terrain can trigger small scale lee waves under strong wind condition, and the horizontal extent of the wave structure is in a dimension of few kilometers and corresponds to the dimension of the horizontal cross-section of the mountain; (2) the life cycle of the lee wave is short, and the wave structures will continuously form roughly in the same location, the

APA, Harvard, Vancouver, ISO, and other styles

12

Xu, Shanshan, and Frédéric Dias. "Long Wave Run-Up Resonance in a Multi-Reflection System." Applied Sciences 10, no. 18 (2020): 6172. http://dx.doi.org/10.3390/app10186172.

Full text

Abstract:

Wave reflection and wave trapping can lead to long wave run-up resonance. After reviewing the theory of run-up resonance in the framework of the linear shallow water equations, we perform numerical simulations of periodic waves incident on a linearly sloping beach in the framework of the nonlinear shallow water equations. Three different types of boundary conditions are tested: fully reflective boundary, relaxation zone, and influx transparent boundary. The effect of the boundary condition on wave run-up is investigated. For the fully reflective boundary condition, it is found that resonant re

APA, Harvard, Vancouver, ISO, and other styles

13

Vay, J. L. "'Transmitted-wave' boundary condition for the wave equation multiscale computation of electromagnetic waves." IEEE Transactions on Magnetics 34, no. 5 (1998): 2688–91. http://dx.doi.org/10.1109/20.717623.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Wu, Ping-Chen, Md Alfaz Hossain, Naoki Kawakami, et al. "EFD and CFD Study of Forces, Ship Motions, and Flow Field for KRISO Container Ship Model in Waves." Journal of Ship Research 64, no. 01 (2020): 61–80. http://dx.doi.org/10.5957/jsr.2020.64.1.61.

Full text

Abstract:

Ship motion responses and added resistance in waves have been predicted by a wide variety of computational tools. However, validation of the computational flow field still remains a challenge. In the previous study, the flow field around the Korea Research Institute for Ships and Ocean Engineering (KRISO) Very Large Crude-oil Carrier 2 tanker model with and without propeller condition and without rudder condition was measured by the authors, as well as the resistance and self-propulsion tests in waves. In this study, the KRISO container ship model appended with a rudder was used for the higher

APA, Harvard, Vancouver, ISO, and other styles

15

Conceição, Ana, António J. Silva, José Boaventura, Daniel A. Marinho, and Hugo Louro. "Wave Characteristics in Breaststroke Technique with and Without Snorkel Use." Journal of Human Kinetics 39, no. 1 (2013): 185–94. http://dx.doi.org/10.2478/hukin-2013-0081.

Full text

Abstract:

Abstract The purpose of this paper was to examine the characteristics of waves generated when swimming with and without the use of Aquatrainer® snorkels. Eight male swimmers performed two maximal bouts of 25 m breaststroke, first without the use of a snorkel (normal condition) and then using a snorkel (snorkel condition). The body landmarks, centre of the mass velocity, stroke rate, stroke length, stroke index, and Strouhal number (St) were quantified. Fourier analysis was conducted to determine the frequency, amplitude, and phase characteristics of the vertical undulations. We also determined

APA, Harvard, Vancouver, ISO, and other styles

16

Stern, F., J. E. Choi, and W. S. Hwang. "Effects of Waves on the Wake of a Surface-Piercing Flat Plate: Experiment and Theory." Journal of Ship Research 37, no. 02 (1993): 102–18. http://dx.doi.org/10.5957/jsr.1993.37.2.102.

Full text

Abstract:

Results are presented from a towing-tank experiment conducted in order to document the effects of waves on the wake of a surface-piercing body. A unique, simple model geometry is utilized which makes it possible to isolate and identify the most important features of the wave-induced effects. Measurements were made for three wave-steepness conditions: zero, medium, and large. The effects of the waves for the latter two conditions are shown to be significant. In particular, the variations of the external-flow pressure gradients cause acceleration and deceleration phases of the streamwise velocit

APA, Harvard, Vancouver, ISO, and other styles

17

Islam, Muhammad Rabiul, Mahmudul Hasan Akib, Fariha Tabassum, and Khandakar Akhter Hossain. "ON THE INVESTIGATION OF WIND GENERATED WAVES IN BANGLADESH RIVERS FOR THE ASSESSMENT OF STABILITY REQUIREMENTS IN INLAND VESSEL DESIGN." Brodogradnja 72, no. 3 (2021): 45–59. http://dx.doi.org/10.21278/brod72304.

Full text

Abstract:

Standard environmental condition is one of the main inputs in designing a vessel especially in assessment of stability condition. The performance based minimum stability requirements are determined by assessing vessels' dynamic failure modes. Winds as well as wind generated waves are the main factors that affect a specific vessel’s dynamics. Wind generated waves in rivers though are usually small in comparison with ocean waves may play a crucial role behind inland vessels accidents. The river condition of a crucial location in Bangladesh inland river routes is assessed where wind velocities ha

APA, Harvard, Vancouver, ISO, and other styles

18

Keys, R. G. "Absorbing boundary conditions for acoustic media." GEOPHYSICS 50, no. 6 (1985): 892–902. http://dx.doi.org/10.1190/1.1441969.

Full text

Abstract:

By decomposing the acoustic wave equation into incoming and outgoing components, an absorbing boundary condition can be derived to eliminate reflections from plane waves according to their direction of propagation. This boundary condition is characterized by a first‐order differential operator. The differential operator, or absorbing boundary operator, is the basic element from which more complicated boundary conditions can be constructed. The absorbing boundary operator can be designed to absorb perfectly plane waves traveling in any two directions. By combining two or more absorption operato

APA, Harvard, Vancouver, ISO, and other styles

19

Shi, He, Jinzhe Gong, Aaron C. Zecchin, Martin F. Lambert, and Angus R. Simpson. "Hydraulic transient wave separation algorithm using a dual-sensor with applications to pipeline condition assessment." Journal of Hydroinformatics 19, no. 5 (2017): 752–65. http://dx.doi.org/10.2166/hydro.2017.146.

Full text

Abstract:

Over the past two decades, techniques have been developed for pipeline leak detection and condition assessment using hydraulic transient waves (i.e. water hammer waves). A common measurement strategy for applications involves analysis of signals from a single pressure sensor located at each measurement site. The measured pressure trace from a single sensor is a superposition of reflections coming from upstream, and downstream, of the sensor. This superposition brings complexities for signal processing applications for fault detection analysis. This paper presents a wave separation algorithm, a

APA, Harvard, Vancouver, ISO, and other styles

20

Miura, Naoto, and Takashi Watanabe. "Potential of M-Wave Elicited by Double Pulse for Muscle Fatigue Evaluation in Intermittent Muscle Activation by Functional Electrical Stimulation for Motor Rehabilitation." Journal of Medical Engineering 2016 (March 27, 2016): 1–12. http://dx.doi.org/10.1155/2016/6957287.

Full text

Abstract:

Clinical studies on application of functional electrical stimulation (FES) to motor rehabilitation have been increasing. However, muscle fatigue appears early in the course of repetitive movement production training by FES. Although M-wave variables were suggested to be reliable indices of muscle fatigue in long lasting constant electrical stimulation under the isometric condition, the ability of M-wave needs more studies under intermittent stimulation condition, because the intervals between electrical stimulations help recovery of muscle activation level. In this paper, M-waves elicited by d

APA, Harvard, Vancouver, ISO, and other styles

21

Stern, F., W. S. Hwang, and S. Y. Jaw. "Effects of Waves on the Boundary Layer of a Surface-Piercing Flat Plate: Experiment and Theory." Journal of Ship Research 33, no. 01 (1989): 63–80. http://dx.doi.org/10.5957/jsr.1989.33.1.63.

Full text

Abstract:

Results are presented from a towing-tank experiment conducted in order to document the effects of waves on the boundary layer of a surface-piercing body. A unique, simple model geometry is utilized which makes it possible to identify and isolate the most important features of the wave-induced effects. Measurements were made of wave profiles as well as detailed boundary-layer velocity profiles for three wave-steepness conditions: zero, medium, and large. The effects of the waves for both the medium-and large-steepness conditions are shown to be significant. In particular, the variations of the

APA, Harvard, Vancouver, ISO, and other styles

22

Cao, Hong Sheng, Xi Shan Pan, Chun Hui Li, Cong Ying Kong, and Wei Yi Zhang. "Nonlinear Wave Mathematical Model and its Application in Permeable Breakwater Harbor." Applied Mechanics and Materials 303-306 (February 2013): 2731–35. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.2731.

Full text

Abstract:

Non-linear wave influence is considered in the elliptic mild-slope equation including higher-order terms of water depth, and a non-linear wave mathematical model is derived in which reflection and transmission boundary conditions are involved based on Behrent radiation boundary condition. The model was verified with data obtained from experiment of elliptic shoal topography, and numerical simulation result accord with experiment value well. The model is applied to simulate waves in a permeable breakwater harbor and a sound wave height distribution in the harbor is obtained, can reflect reflect

APA, Harvard, Vancouver, ISO, and other styles

23

Sung, Mi-Kyung, Seon-Hwa Kim, Baek-Min Kim, and Yong-Sang Choi. "Interdecadal Variability of the Warm Arctic and Cold Eurasia Pattern and Its North Atlantic Origin." Journal of Climate 31, no. 15 (2018): 5793–810. http://dx.doi.org/10.1175/jcli-d-17-0562.1.

Full text

Abstract:

This study investigates the origin of the interdecadal variability in the warm Arctic and cold Eurasia (WACE) pattern, which is defined as the second empirical orthogonal function of surface air temperature (SAT) variability over the Eurasian continent in Northern Hemisphere winter, by analyzing the Twentieth Century Reanalysis dataset. While previous studies highlight recent enhancement of the WACE pattern, ascribing it to anthropogenic warming, the authors found that the WACE pattern has experienced a seemingly periodic interdecadal variation over the twentieth century. This long-term variat

APA, Harvard, Vancouver, ISO, and other styles

24

Ranjbar, Monireh, and Ali Bahari. "Phase-matching condition of four-wave mixing in cylindrical nonlinear optical media." International Journal of Modern Physics B 30, no. 25 (2016): 1650182. http://dx.doi.org/10.1142/s0217979216501824.

Full text

Abstract:

Propagation of cylindrical waves in homogeneous and inhomogeneous nonlinear optical media has been investigated theoretically. The coupled-wave equations for a homogeneous and inhomogeneous nonlinear media have been investigated numerically. For homogeneous media, calculations show that phase-matching condition is not fulfilled and efficiency of output wave is very low, but for inhomogeneous media, phase-matching condition is nearly fulfilled and the generated wave amplitude of the four-wave mixing (FWM) is much larger than the homogeneous media. The effect of effective nonlinear optical coeff

APA, Harvard, Vancouver, ISO, and other styles

25

Qin, Shufang, Jun Fan, Haiming Zhang, Junwei Su, and Yi Wang. "Flume Experiments on Energy Conversion Behavior for Oscillating Buoy Devices Interacting with Different Wave Types." Journal of Marine Science and Engineering 9, no. 8 (2021): 852. http://dx.doi.org/10.3390/jmse9080852.

Full text

Abstract:

Oscillating buoy device, also known as point absorber, is an important wave energy converter (WEC) for wave energy development and utilization. The previous work primarily focused on the optimization of mechanical design, buoy’s array configuration and the site selection with larger wave energy density in order to improve the wave energy generation performance. In this work, enlightened by the potential availability of Bragg reflection induced by multiple submerged breakwaters in nearshore areas, we investigate the energy conversion behavior of oscillating buoy devices under different wave typ

APA, Harvard, Vancouver, ISO, and other styles

26

Husain, Nyla T., Tetsu Hara, Marc P. Buckley, Kianoosh Yousefi, Fabrice Veron, and Peter P. Sullivan. "Boundary Layer Turbulence over Surface Waves in a Strongly Forced Condition: LES and Observation." Journal of Physical Oceanography 49, no. 8 (2019): 1997–2015. http://dx.doi.org/10.1175/jpo-d-19-0070.1.

Full text

Abstract:

AbstractThe impact of sea state on air–sea momentum flux (or wind stress) is a poorly understood component of wind–wave interactions, particularly in high wind conditions. The wind stress and mean wind profile over the ocean are influenced by the characteristics of boundary layer turbulence over surface waves, which are strongly modulated by transient airflow separation events; however, the features controlling their occurrence and intensity are not well known. A large-eddy simulation (LES) for wind over a sinusoidal wave train is employed to reproduce laboratory observations of phase-averaged

APA, Harvard, Vancouver, ISO, and other styles

27

Schlutow, Mark, and Erik Wahlén. "Generalized modulation theory for strongly nonlinear gravity waves in a compressible atmosphere." Mathematics of Climate and Weather Forecasting 6, no. 1 (2020): 97–112. http://dx.doi.org/10.1515/mcwf-2020-0105.

Full text

Abstract:

Abstract This study investigates strongly nonlinear gravity waves in the compressible atmosphere from the Earth’s surface to the deep atmosphere. These waves are effectively described by Grimshaw’s dissipative modulation equations which provide the basis for finding stationary solutions such as mountain lee waves and testing their stability in an analytic fashion. Assuming energetically consistent boundary and far-field conditions, that is no energy flux through the surface, free-slip boundary, and finite total energy, general wave solutions are derived and illustrated in terms of realistic ba

APA, Harvard, Vancouver, ISO, and other styles

28

Wang, Zhuo, Michael T. Montgomery, and Cody Fritz. "A First Look at the Structure of the Wave Pouch during the 2009 PREDICT–GRIP Dry Runs over the Atlantic." Monthly Weather Review 140, no. 4 (2012): 1144–63. http://dx.doi.org/10.1175/mwr-d-10-05063.1.

Full text

Abstract:

In support of the National Science Foundation Pre-Depression Investigation of Cloud-systems in the tropics (NSF PREDICT) and National Aeronautics and Space Administration Genesis and Rapid Intensification Processes (NASA GRIP) dry run exercises and National Oceanic and Atmospheric Administration Hurricane Intensity Forecast Experiment (NOAA IFEX) during the 2009 hurricane season, a real-time wave-tracking algorithm and corresponding diagnostic analyses based on a recently proposed tropical cyclogenesis model were applied to tropical easterly waves over the Atlantic. The model emphasizes the im

APA, Harvard, Vancouver, ISO, and other styles

29

Jung, Jae-Sang, and Changhoon Lee. "An Analytical Study of Regular Waves Generated by Bottom Wave Makers in a 3-Dimensional Wave Basin." Journal of Korean Society of Coastal and Ocean Engineers 34, no. 4 (2022): 93–99. http://dx.doi.org/10.9765/kscoe.2022.34.4.93.

Full text

Abstract:

Analytical solutions for regular waves generated by bottom wave makers in a 3-dimensional wave basin were derived in this study. Bottom wave makers which have triangular, rectangular and combination of two shapes were adopted. The 3-dimensional velocity potential was derived based on the linear wave theory with the bottom moving boundary condition, kinematic and dynamic free surface boundary conditions in a wave basin. Then, analytical solutions of 3-dimensional particle velocities and free surface displacement were derived from the velocity potential. The solutions showed physically valid res

APA, Harvard, Vancouver, ISO, and other styles

30

Hara, Tetsu, and Peter P. Sullivan. "Wave Boundary Layer Turbulence over Surface Waves in a Strongly Forced Condition." Journal of Physical Oceanography 45, no. 3 (2015): 868–83. http://dx.doi.org/10.1175/jpo-d-14-0116.1.

Full text

Abstract:

AbstractAccurate predictions of the sea state–dependent air–sea momentum flux require a thorough understanding of the wave boundary layer turbulence over surface waves. A set of momentum and energy equations is derived to formulate and analyze wave boundary layer turbulence. The equations are written in wave-following coordinates, and all variables are decomposed into horizontal mean, wave fluctuation, and turbulent fluctuation. The formulation defines the wave-induced stress as a sum of the wave fluctuation stress (because of the fluctuating velocity components) and a pressure stress (pressur

APA, Harvard, Vancouver, ISO, and other styles

31

Dalrymple, Robert A., and James T. Kirby. "Models for very wide-angle water waves and wave diffraction." Journal of Fluid Mechanics 192 (July 1988): 33–50. http://dx.doi.org/10.1017/s0022112088001776.

Full text

Abstract:

For a bathymetry consisting of parallel bottom contours, wide-angle parabolic models are developed to describe the diffraction of linear water waves. The first model, developed by operator correspondence, extends the validity of conventional forms of the parabolic model for wave angles up to 70° from the assumed wave direction. Through the use of Fourier decomposition, wave models valid to 90° are developed for three different lateral boundary conditions. By application, it is shown that the diffraction of waves through gaps or around structures is governed by the initial wave condition at the

APA, Harvard, Vancouver, ISO, and other styles

32

Zhao, Xiangfeng, and Hui Huang. "Theoretical Analysis of a Simple Hyperbolic Metamaterial Wave Splitter." Journal of Physics: Conference Series 2666, no. 1 (2023): 012024. http://dx.doi.org/10.1088/1742-6596/2666/1/012024.

Full text

Abstract:

Abstract Wave splitter for TE and TM wave is critical components in the integrated optics. Current technologies mainly rely on two types of designs to separate TE and TM waves: directional coupler type and branch type, but these designs are generally complex. By exploring the transmission behavior of the waves in the hyperbolic metamaterial and the distinct dispersion relationships of TE and TM waves in these materials, we have designed a wave splitter with a simple structure. Under different parameter conditions, we can get the pure TE wave or pure TM wave in the transmission region. Furtherm

APA, Harvard, Vancouver, ISO, and other styles

33

Long, L. T., and J. S. Liow. "A transparent boundary for finite‐difference wave simulation." GEOPHYSICS 55, no. 2 (1990): 201–8. http://dx.doi.org/10.1190/1.1442827.

Full text

Abstract:

Transparent (or absorbing) boundaries can be used in finite‐difference wave simulation to reduce the size of the computational grid and to eliminate reflections from the edges. An efficient and accurate transparent boundary can be formulated by decomposing the elastic waves into dilatational and rotational strains. The wave motions for the strains at the boundary can then be approximated by a one‐way wave equation. The direction of propagation is determined at each grid point by the gradient. This transparent boundary condition eliminates artificial reflections for a wave arriving at any angle

APA, Harvard, Vancouver, ISO, and other styles

34

Sim, Woo Jeong, Hyun-Doug Yoon, Weon Mu Jeong, and Kyong-ho Ryu. "OBSERVATION OF WAVE SPECTRUM UNDER TYPHOON CONDITION." Coastal Engineering Proceedings, no. 35 (June 23, 2017): 10. http://dx.doi.org/10.9753/icce.v35.waves.10.

Full text

Abstract:

The spatial and temporal variation of wave spectrum under typhoon SANBA, which was the 16th typhoon originating in the northwestern Pacific Ocean in 2012, was examined. The typhoon SANBA passed through the middle of Korean peninsula whereas most of typhoons passed the Straits of Korea (eastern side of Korean peninsula). This unique path of typhoon SANBA provided interesting features of wave conditions. It was believed that wave heights were larger in the right side of the typhoon path because typhoons translation speed and rotational wind field were in the same direction (i.e., dangerous semic

APA, Harvard, Vancouver, ISO, and other styles

35

Cha, Louis Dongbing, and Arick Shao. "Global stability of traveling waves for (1 + 1)-dimensional systems of quasilinear wave equations." Journal of Hyperbolic Differential Equations 19, no. 04 (2022): 549–86. http://dx.doi.org/10.1142/s0219891622500163.

Full text

Abstract:

A key feature of [Formula: see text]-dimensional nonlinear wave equations is that they admit left or right traveling waves, under appropriate algebraic conditions on the nonlinearities. In this paper, we prove global stability of such traveling wave solutions for [Formula: see text]-dimensional systems of nonlinear wave equations, given a certain asymptotic null condition and sufficient decay for the traveling wave. We first consider semilinear systems as a simpler model problem; we then proceed to treat more general quasilinear systems.

APA, Harvard, Vancouver, ISO, and other styles

36

Mundhra, Raksha, and P. N. Deka. "Instability of Ion Cyclotron Waves (ICWS) at the Expense of Lower Hybrid Drift Waves (LHDWS) Turbulence Energy." East European Journal of Physics, no. 4 (December 2, 2023): 54–65. http://dx.doi.org/10.26565/2312-4334-2023-4-06.

Full text

Abstract:

Instability of ion cyclotron waves(ICWs) is investigated in presence of lower hybrid drift waves(LHDWs) turbulence. Plasma inhomogeneity in the Earth’s magnetopause region supports a range of low frequency drift wave turbulent fields due to gradients in density in different regions of the media. One of these drift phenomena is identified as lower hybrid drift waves (LHDWs) which satisfies resonant conditions ω − k · v = 0. We have considered a nonlinear wave-particle interaction model where the resonant wave that accelerates the particle in magnetopause may transfer its energy to ion cyclotron

APA, Harvard, Vancouver, ISO, and other styles

37

ZHU, QIANG, YUMING LIU, and DICK K. P. YUE. "Resonant interactions between Kelvin ship waves and ambient waves." Journal of Fluid Mechanics 597 (February 1, 2008): 171–97. http://dx.doi.org/10.1017/s002211200700969x.

Full text

Abstract:

We consider the nonlinear interactions between the steady Kelvin waves behind an advancing ship and an (unsteady) ambient wave. It is shown that, for moderately steep ship waves and/or ambient waves, third-order (quartet) resonant interaction among the two wave systems could occur, leading to the generation of a new propagating wave along a specific ray in the Kelvin wake. The wave vector of the generated wave as well as the angle of the resonance ray are determined by the resonance condition and are functions of the ship forward speed and the wave vector of the ambient wave. To understand the

APA, Harvard, Vancouver, ISO, and other styles

38

Lee, Young Hak, and Taekeun Oh. "The Measurement of P-, S-, and R-Wave Velocities to Evaluate the Condition of Reinforced and Prestressed Concrete Slabs." Advances in Materials Science and Engineering 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/1548215.

Full text

Abstract:

The traditional P-wave ultrasonic measurement has been used for the condition assessment of general reinforced concrete structures for a long time, but the effects of prestressing applied to concrete structures such as long-span buildings and bridges on ultrasonic pulse velocity have not been studied clearly. Therefore, this study analyzed the statistical distribution of P-wave ultrasonic pulse velocities in reinforced and prestressed concrete slabs of 3000 × 3000 mm with a thickness of 250 mm. In addition, we measured S- and R-waves to identify experimental consistency by statistical analysis

APA, Harvard, Vancouver, ISO, and other styles

39

Jung, Jae-Sang, and Changhoon Lee. "Development of Analytical Solutions on Velocities of Regular Waves Generated by Bottom Wave Makers in a Flume." Journal of Korean Society of Coastal and Ocean Engineers 34, no. 3 (2022): 58–71. http://dx.doi.org/10.9765/kscoe.2022.34.3.58.

Full text

Abstract:

Analytical solutions for two-dimensional velocities of regular waves generated by bottom wave makers in a flume were derived in this study. Triangular and rectangular bottom wave makers were adopted. The velocity potential was derived based on the linear wave theory with the bottom moving boundary condition, kinematic and dynamic free surface boundary conditions. Then, analytical solutions of two-dimensional particle velocities were derived from the velocity potential. The velocity potential and two-dimensional particle velocities which were derived as complex integral equations were numerical

APA, Harvard, Vancouver, ISO, and other styles

40

Yang, C., and R. C. Ertekin. "Numerical Simulation of Nonlinear Wave Diffraction by a Vertical Cylinder." Journal of Offshore Mechanics and Arctic Engineering 114, no. 1 (1992): 36–44. http://dx.doi.org/10.1115/1.2919950.

Full text

Abstract:

A three-dimensional time domain approach is used to study nonlinear wave diffraction by a fixed, vertical circular-cylinder that extends to the sea floor. In this approach, the development of the flow can be obtained by a time-stepping procedure, in which the velocity potential of the flow at any instant of time is obtained by the boundary-element method. In the numerical calculations, the exact body-boundary condition is satisfied on the instantaneous wetted surface of the cylinder, and an extended Sommerfeld condition is developed and used as the numerical radiation condition. The fourth-ord

APA, Harvard, Vancouver, ISO, and other styles

41

Jiang, Ting, Fan Wang, Xin-ying Li, and Xiao-long Zheng. "Research on Wind Wave Simulation Technology based on Potential Flow Theory." Journal of Physics: Conference Series 2381, no. 1 (2022): 012003. http://dx.doi.org/10.1088/1742-6596/2381/1/012003.

Full text

Abstract:

Abstract The wave environment is the main service environment of surface aircraft in the process of surface duty. In order to comprehensively study the operating characteristics of aircraft under this condition, it is necessary to conduct research on wave parameter modeling methods and simulation technology based on different wave conditions. This paper adopts the three-dimensional potential theory and ball model to calculate the different wave cases. A high-precision numerical simulation method of complex sea conditions is formed by mastering the numerical wave-making technology of typical re

APA, Harvard, Vancouver, ISO, and other styles

42

Dudko, Olga V., and Alexandr A. Mantsybora. "Shock Loading of Heteromodular Elastic Materials under Plane-Strain Condition." Key Engineering Materials 887 (May 2021): 634–39. http://dx.doi.org/10.4028/www.scientific.net/kem.887.634.

Full text

Abstract:

The paper discusses the results of mathematical modeling the two-dimensional nonlinear dynamics of heteromodular elastic materials. The resistance of these materials under tension and compression is various. The deformation properties of the heteromodular medium are described within the framework of the isotropic elasticity theory with stress-dependent elastic moduli. In the plane strain case, it is shown that only two types of the nonlinear deformation waves can appear in the heteromodular elastic materials: a plane-polarized quasi-longitudinal wave and a plane-polarized quasi-transverse wave

APA, Harvard, Vancouver, ISO, and other styles

43

Wang, Shu-qi, Ying Zhang, Yang-yang Xie, Gang Xu, Kun Liu, and Yuan Zheng. "Hydrodynamic Analysis of Horizontal Axis Tidal Current Turbine under the Wave-Current Condition." Journal of Marine Science and Engineering 8, no. 8 (2020): 562. http://dx.doi.org/10.3390/jmse8080562.

Full text

Abstract:

To take advantage of the high tidal current velocity near the free surface, the horizontal axis turbine is installed, which inevitably causes hydrodynamic characteristics to effect the turbine by the waves. In this article, we established a numerical calculation method for the hydrodynamic load of a horizontal axis turbine under wave-current conditions. Based on the numerical calculation results, the hydrodynamic loads were decomposed and the influence rules of wave parameters and blade tip immersion depth on the hydrodynamic load were obtained. The study found the following: (1) the multi-fre

APA, Harvard, Vancouver, ISO, and other styles

44

Zhi-Fu, Li, Shi YuYun, Ren HuiLonga, Li Hui, and Muhammad Aqeel Ashraf. "Simulation of Irregular Waves in a Numerical Wave Tank." Polish Maritime Research 22, s1 (2015): 21–25. http://dx.doi.org/10.1515/pomr-2015-0027.

Full text

Abstract:

Abstract The time domain boundary element method was utilized to simulate the propagation of the irregular waves in a numerical wave tank. The problem was solved in a time-marching scheme, upon the irregular waves being fed through the inflow boundary, in which the theoretical solution was obtained from the wave energy spectrum. The open boundary condition was modeled by the multi transmitting formula (MTF), in which the phase velocity was calculated according to the Sommerfeld’s condition. The velocity potential and wave elevation were directly obtained by integrating the free surface conditi

APA, Harvard, Vancouver, ISO, and other styles

45

Hamada, Tokuichi. "THE SURFACE WAVE IN A TWO-DIMENSIONAL VORTEX LAYER." Coastal Engineering Proceedings 1, no. 8 (2011): 3. http://dx.doi.org/10.9753/icce.v8.3.

Full text

Abstract:

Progressive surface wave in a two-dimensional vortex layer is theoretically treated. Dynamical equations and free surface conditions are shown by using the two-dimensional stream functions of wave and vortex. Then the perturbation equations are given by assuming that the ratio of length scale of vortices and wave is fairly small. The first approximate solution of wave has a usual form of an irrotational progressive wave. Vortices are assumed to be steady and to have simplified Fourier- Stleltjes form. Then the interaction of this primary wave and the vortices are examined. To satis

APA, Harvard, Vancouver, ISO, and other styles

46

Wiciak, Piotr, Giovanni Cascante, and Maria Anna Polak. "Laser vibrometer condition assessment of cemented materials using wavelet synchro-squeezed transform." MATEC Web of Conferences 323 (2020): 01003. http://dx.doi.org/10.1051/matecconf/202032301003.

Full text

Abstract:

Current non-destructive ultrasonic techniques (NDT) are based mostly on wave velocity analysis. While current techniques can identify severe damage, they fail to detect early deterioration. Therefore, the proposed method, based on the propagation of surface waves, takes into account not only changes in wave velocity but also changes in wave attenuation. In practical/field applications, access to a structure is often limited to one side only (i.e. concrete slabs, vacuum building walls). Thus, surface wave analysis is a natural solution. To improve the reliability of wave attenuation measurement

APA, Harvard, Vancouver, ISO, and other styles

47

Hwang, Paul A., Derek M. Burrage, David W. Wang, and Joel C. Wesson. "Ocean Surface Roughness Spectrum in High Wind Condition for Microwave Backscatter and Emission Computations*." Journal of Atmospheric and Oceanic Technology 30, no. 9 (2013): 2168–88. http://dx.doi.org/10.1175/jtech-d-12-00239.1.

Full text

Abstract:

Abstract Ocean surface roughness plays an important role in air–sea interaction and ocean remote sensing. Its primary contribution is from surface waves much shorter than the energetic wave components near the peak of the wave energy spectrum. Field measurements of short-scale waves are scarce. In contrast, microwave remote sensing has produced a large volume of data useful for short-wave investigation. Particularly, Bragg resonance is the primary mechanism of radar backscatter from the ocean surface and the radar serves as a spectrometer of short surface waves. The roughness spectra inverted

APA, Harvard, Vancouver, ISO, and other styles

48

Li, J., and H. Huang. "Second-Order Radiation Condition of Scattering Wave and Its Application." Journal of Offshore Mechanics and Arctic Engineering 112, no. 3 (1990): 177–80. http://dx.doi.org/10.1115/1.2919853.

Full text

Abstract:

The first and second-order radiation conditions for scattering waves in two and three-dimensional problems have been derived by virtue of a sequence of linear differential operators. The wave forces on a large circular cylinder are computed by using finite element methods with first and second-order radiation conditions and the Sommerfeld condition, respectively. The results show that an improvement in accuracy is achieved by employing the second-order radiation condition. The interior region in which finite elements are employed can be restricted to a much smaller one, compared with that usin

APA, Harvard, Vancouver, ISO, and other styles

49

Dally, William R., and Robert G. Dean. "CLOSED-FORM SOLUTIONS FOR THE PROBABILITY DENSITY OF WAVE HEIGHT IN THE SURF ZONE." Coastal Engineering Proceedings 1, no. 21 (1988): 60. http://dx.doi.org/10.9753/icce.v21.60.

Full text

Abstract:

By invoking the assumption that in the surf zone, random waves behave as a collection of individual regular waves, two closed-form solutions for the probability density function of wave height on planar beaches are derived. The first uses shallow water linear theory for wave shoaling, assumes a uniform incipient condition, and prescribes breaking with a regular wave model that includes both bottom slope and wave steepness effects on the rate of decay. In the second model, the shallow water assumption is removed, and a distribution in wave period (incipient condition) is included. Preliminary r

APA, Harvard, Vancouver, ISO, and other styles

50

Hu, Xuan, Azhar Halik, and Ahmadjan Muhammadhaji. "SPH Simulation of the Interaction between Freak Waves and Bottom-Fixed Structures." Mathematics 11, no. 23 (2023): 4838. http://dx.doi.org/10.3390/math11234838.

Full text

Abstract:

In this paper, the Smoothed Particle Hydrodynamics (SPH) method is used in a C# environment to simulate the interaction between freak waves and bottom-fixed structures by establishing a fluid dynamics model. Paraview software 5.10.1 was used to analyze and visualize the simulation results. In order to simulate wave propagation accurately, the reliability of the model was verified by comparing experimental and simulated data. A two-dimensional numerical wave flume was established based on the SPH method, a conservative Riemann solver was introduced, a repulsive boundary condition was adopted, a

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!