Results 71 to 80 of about 593,954 (295)

Random Wave-Induced Momentary Liquefaction around Rubble Mound Breakwaters with Submerged Berms

Journal of Marine Science and Engineering, 2020
The effects of submerged berms in attenuating the momentary liquefaction beneath rubble mound breakwaters under regular waves were investigated in a recent study.
Daniele Celli, Yuzhu Li, Muk Chen Ong, Marcello Di Risio   +3 more
doaj   +1 more source

Three-dimensional fluid motion in Faraday waves: creation of vorticity and generation of two-dimensional turbulence

, 2014
We study the generation of 2D turbulence in Faraday waves by investigating the creation of spatially periodic vortices in this system. Measurements which couple a diffusing light imaging technique and particle tracking algorithms allow the simultaneous ...
Francois, N., Punzmann, H., Ramsden, S., Shats, M., Xia, H.   +4 more
core   +2 more sources

OWC-Type Wave Chamber Optimization Under Series of Regular Waves

Arabian Journal for Science and Engineering, 2015
Oceans cover more than 70 % of the Earth’s surface, and water waves are considered as unlimited sources of renewable energy. The use of fossil fuels may cause undesired challenges such as global warming and climate change in the nature. Advantages of renewable energy include low operational cost, environment friendliness, simple maintenance procedures,
Mahnamfar, Farrokh, Altunkaynak, Abdusselam   +1 more
openaire   +2 more sources

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Performance of a two-body wave energy converter with an annular heave plate

Flow
We theoretically examine the performance of a two-body wave energy converter (WEC) featuring a floating sphere and a submerged annular heave plate, connected by a power take-off (PTO) system. Utilising linear wave theory, we derive the system’s frequency-
Raj Tamakuwala, Muhammad Usman, Nathan Tom, Hassan Masoud   +3 more
doaj   +1 more source

Avoided intersections of nodal lines

, 2002
We consider real eigen-functions of the Schr\"odinger operator in 2-d. The nodal lines of separable systems form a regular grid, and the number of nodal crossings equals the number of nodal domains.
Alejandro G Monastra, Berry M V, Berry M V, Bies W E, Courant R, Donnelly H, Donnelly H, Donnelly H, Graf J H, Krahn E, Pleijel A, Sven Gnutzmann, Uhlenbeck K, Uzy Smilansky, Watson G N   +14 more
core   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Anomalous wave propagation in quasiisotropic media

, 2006
Based on boundary conditions and dispersion relations, the anomalous propagation of waves incident from regular isotropic media into quasiisotropic media is investigated.
Belov, Born, Chen, Dumelow, Fei Li, Foteinopoulou, Foteinopoulou, Grzegorczyk, Grzegorczyk, Hailu Luo, Houck, Hu, Jackson, Jiang, Kong, Lakhtakia1, Landau, Lindell, Luo, Luo, Luo, Mackay, Parazzoli, Parazzoli, Russell, Shelby, Shen, Shen, Shen, Smith, Smith, Smith, Smith, Thomas, Veselago, Weixing Shu, Yu, Zengerle, Zhongzhou Ren, Zhou   +39 more
core   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source