Results 41 to 50 of about 4,033,948 (250)

A novel drifter designed for use with a mounted Acoustic Doppler Current Profiler in shallow environments [PDF]

, 2013
We present a novel design for a surface drifter, mounted with a pulse-coherent Acoustic Doppler Current Profiler (ADCP) for measuring near-surface (depths 0.18-1 m) flows.
Henderson, Stephen M., Mullarney, Julia C.   +1 more
core   +2 more sources

A New Model for Calculating Voidage in Goaf Under Roof‐Cutting Pressure Relief Mining: Exploring the Influence of Volumetric Strain on Voidage From the Perspective of Finite Element

Energy Science &Engineering, Volume 13, Issue 10, Page 4674-4689, October 2025.
ABSTRACT Roof cutting and pressure relief mining technology has been applied in coal mine enterprises because of its advantages of improving the resource utilization rate. Compared to the previous longwall mining mode, the roof unloading and caving characteristics of goaf have undergone significant changes, leading to different patterns of overlying ...
Mengke Liu, Haidong Chen, Xiangjun Chen, Lin Wang, Shuailong Feng   +4 more
wiley   +1 more source

Power loss analysis in altered tooth-sum spur gearing

MATEC Web of Conferences, 2018
The main cause of power loss or dissipation of heat in case of meshed gears is due to friction existing between gear tooth mesh and is a major concern in low rotational speed gears, whereas in case of high operating speed the power loss taking place due ...
Sachidananda H. K., Raghunandana K., Shivamurthy B.   +2 more
doaj   +2 more sources

Design and Simulation of a Robotic System Integrated With Flywheel Energy Storage for Power Outage Resilience

Energy Science &Engineering, Volume 13, Issue 10, Page 4717-4729, October 2025.
ABSTRACT In industrial robotics, it is crucial to ensure the completion of ongoing processes in the event of a power outage. In this study, a robotic system integrated with a solar panel production system was designed using the ABB RobotStudio program.
Resat Celikel, Omur Aydogmus, Musa Yilmaz   +2 more
wiley   +1 more source

A Hybrid Parameters Estimation Approach for Power Consumption Modeling of Ground Mobile Robots With Unknown Payload

Journal of Field Robotics, Volume 42, Issue 5, Page 1840-1860, August 2025.
ABSTRACT Typically, batteries are the main power source for mobile robots, and the practical constraints in carrying them pose challenges in achieving efficiency, autonomy, and safety objectives in robotic missions. Moreover, dealing with battery degradation requires a precise understanding of energy consumers' behavior in the system.
Parham Haji Ali Mohamadi, Amin Khorasani, Tom Verstraten, Bram Vanderborght   +3 more
wiley   +1 more source

Separation Timescales of Vertically Migrating Zooplankton and Other (a)Biotic Materials in the Benguela System

Journal of Geophysical Research: Oceans, Volume 130, Issue 4, April 2025.
Abstract Plankton, plastics, nutrients, and other materials in the ocean can exhibit different dispersion patterns depending on their individual transport properties. These dispersion patterns can provide information on the effective timescales of interaction between different types of materials in a highly dynamic ocean environment, such as the ...
Darshika Manral, Laura Gómez‐Navarro, Michael C. Denes, Doroteaciro Iovino, Pier Giuseppe Fogli, Simona Masina, Ismael Hernández‐Carrasco, Linda Amaral‐Zettler, Marcello Vichi, Erik van Sebille   +9 more
wiley   +1 more source

Extended Windage Loss Models for Gas Bearing Supported Spindles Operated in Dense Gases

Journal of Engineering For Gas Turbines and Power, 2020
Generic models are proposed to evaluate the skin friction coefficient acting on enclosed rotating disks and cylinders under various flow regimes. In particular, a model taking into account the inner radius of the disk is developed.
K. Rosset, J. Schiffmann
semanticscholar   +1 more source

Numerical and analytical investigations of the water immersion cooling strategy for a permanent magnet synchronous motor

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
Elevated operating temperatures in permanent magnet synchronous motors (PMSMs) induce performance degradation due to partial demagnetization of the permanent magnets and accelerated aging of the insulation system. Effective thermal management is, therefore, critical for ensuring optimal motor performance and longevity.
Tohid Sharifi
wiley   +1 more source

Assessment of Parameter Estimation Methods for Nonintrusive Loss Estimation of Induction Motors

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
Nine methods for induction motor equivalent circuit parameter estimation from catalogue data for on‐site loss estimation are assessed. The combination of high accuracy and total absence of nonphysical results is not found in any of the tested methods. The case study of loss estimation with tested motors shows that good accuracy is achievable as long as
Carlos A. C. Wengerkievicz, Nelson J. Batistela, Nelson Sadowski, Cristhian Becker, Humberto Verdejo   +4 more
wiley   +1 more source

Analytical and Experimental Investigation of Windage–Churning Behavior in Spur, Bevel, and Face Gears

Applied Sciences
This paper presents comparable sets of the no-load power loss as a product of windage and churning behaviors of a family of various rotating parts (i.e., disc, spur gear, straight bevel gear, and orthogonal face gear).
Yu Dai, Caihua Yang, He Liu, Xiang Zhu
doaj   +1 more source