Results 51 to 60 of about 7,208 (162)

Incorporating Non-Equlibrium Ripple Dynamics into Bed Stress Estimates Under Combined Wave and Current Forcing

Journal of Marine Science and Engineering
We present direct measurements of seafloor ripple dimensions, near-bed mean flow Reynolds stresses and near-bed turbulent sediment fluxes on a sandy inner shelf subjected to strong wave and tidal current forcing.
Raúl P. Flores, Sabine Rijnsburger, Saulo Meirelles, Alexander R. Horner-Devine, Alejandro J. Souza, Julie D. Pietrzak   +5 more
doaj   +1 more source

Ripple-averaged wave boundary layer over long-crest sand ripples at high Reynolds number: Observations and theoretical model

Applied Ocean Research
Long-crest sand ripples are common bedform features developed by moderate shoaling waves in the coastal environment. The spanwise coherent vortex (SCV) generated in the lee side controls the behavior of ripple-averaged (RA) flow, which is of primary ...
Jing Yuan, Deping Cao
doaj   +1 more source

Laboratory study of suspended sediment dynamics over a mildly sloping sandy seabed

Oceanologia, 2019
Summary: This paper presents the results of laboratory measurements of suspended sediment movement induced by regular non-linear water waves propagating over a mildly sloping sandy seabed covered with ripples.
Barbara Stachurska, Ryszard Staroszczyk
doaj   +1 more source

Numerical investigation of surface roughness formation under alternating current gas tungsten arc welding

Journal of Materials Research and Technology
Surface roughness is a critical factor influencing weld quality and mechanical performance in aluminum arc welding. This study presents a Multiphysics simulation of surface ripple formation during gas tungsten arc welding (GTAW) under alternating current
C.Y. Kuo, P.S. Wei, W.L. Cheng
doaj   +1 more source

Predictive control of plug-in electric vehicle chargers with photovoltaic integration

Journal of Modern Power Systems and Clean Energy, 2018
This paper presents a model predictive control (MPC) for off-board plug-in electric vehicle (PEV) chargers with photovoltaic (PV) integration using two-level four-leg inverter topology.
Adrian Soon Theam TAN, Dahaman ISHAK, Rosmiwati MOHD-MOKHTAR, Sze Sing LEE, Nik Rumzi Nik IDRIS   +4 more
doaj   +1 more source

Analysis of traveling wheel on loose sandy soil (Sandy soil flow beneath a wheel due to the interaction)

Nihon Kikai Gakkai ronbunshu, 2017
Soil-vehicle interaction is an important factor for predicting trafficability of off-road vehicles. Tractive forces on the wheel to drive the vehicle can be estimated by soil deformation analysis around the contact area of the wheel. Sand deformation and
Junya YAMAKAWA, Masato GOTO, Ryosuke ETO
doaj   +1 more source

Accurate Evaluation of Steady-State Sheath Voltage and Current in HVDC Cable Using Electromagnetic Transient Simulation

Energies, 2019
The current and voltage in High Voltage DC (HVDC) line is not pure DC but contain superimposed ripple components. The current ripple in core of HVDC cable magnetically induces a voltage in the sheath, whereas the voltage ripple causes the flow of ...
Mansoor Asif, Ho-Yun Lee, Kyu-Hoon Park, Bang-Wook Lee   +3 more
doaj   +1 more source

Environmental-friendly quantum dot ripples prepared from the Couette flow of solution exhibiting strong laser polarizer ability

Nano Research
Herein, we fabricate a well-patterned semiconductor ripple structure via confined Couette flow of a quantum dot solution between two glass slides. This method is broadly applicable to diverse colloidal quantum dots, including environmentally friendly ...
Kexin Chen, Baowei Zhang, Shizhe Ren, Qingxiu Song, Yongqiang Zhang, Yongsheng Hu, Haiyun Dong, Yong Sheng Zhao, Siyu Lu   +8 more
doaj   +1 more source

Mathematical Relationship Between Particle Reynolds Number and Ripple Factor using Tapi River Data, India. [PDF]

Journal of Systemics, Cybernetics and Informatics, 2011
The computation of bed load allows for the fact that only part of the shear stress is used for transport of sediments and some of the shear stress is wasted in overcoming the resistance due to bed forms therefore the total shear stress developed in the ...
S. M. Yadav, B. K. Samtani, K. A. Chauhan   +2 more
doaj  

Nonlinearity in Oscillatory Flow over Sand Ripple

, 2009
In this report, We investigated the nonlinear phenomena in the study of flow dynamics of velocity component. In our studies, we observed nonlinear term in the vertical component of velocity by vittori et al \cite{vit} The time series simulation of vertical component which increases with Reynold stress value.
Dutta, Ruma, Kubatko, Ethan
openaire   +2 more sources