Results 61 to 70 of about 184,150 (234)

Nanophotonic Biosensors and the Paradigm of Trans‐Scale Autonomous Bio‐Integrated Diagnostics for Addressing Health Complexities

Electron, EarlyView.
Physics‐driven advances in optical nanobiosensors for rapid, miniaturized, and point‐of‐care diagnostics for next‐generation decentralized and personalized healthcare based on sensor intelligence. ABSTRACT Public health emergencies and the escalating burden of chronic diseases necessitate a paradigm shift from centralized laboratory testing to rapid ...
Vishal Chaudhary, Harsh Sable, Sonu Sonu, Lakshita Phor, Reddicherla Umapathi, Pradeep Bhadola   +5 more
wiley   +1 more source

Innovative Device to Control Self-Induced Instabilities Associated with the Swirling Flow from the Discharge Cone of Hydraulic Turbines

Actuators
In our previous research work, we investigated different methods to mitigate the vortex rope that appears in the draft tube of a Francis turbine when it operates at off-design operating points.
Constantin Tănasă, Adrian Ciprian Stuparu, Alin Bosioc, Cristina Terteci, George Belgiu, Sorin Nanu   +5 more
doaj   +1 more source

Genetic Algorithm‐Driven Analysis of Gravitational Water Vortex Power Plant Runner Performance: A Comparative Study Integrating Experimental and Computational Fluid Dynamics

Energy Science &Engineering, EarlyView.
This study integrates genetic algorithm optimization, CFD simulation, and experimental validation to identify the optimal runner geometry for a gravitational water vortex turbine. The combined approach enhances vortex stability and improves energy conversion efficiency, demonstrating strong agreement between predicted and measured performance ...
Zakaria. A. Mwakitwange, Adam Faraji
wiley   +1 more source

Damage accumulation in high performance synthetic fibre ropes [PDF]

This thesis presents the results of an investigation into the process of damage and failure in small diameter high performance synthetic fibre ropes namely Dyneema, Vectran and Technora ropes.
Koohgilani, Mehran
core   +4 more sources

A Parametric Study of Vane and Air-jet Vortex Generators [PDF]

, 1998
An experimental parametric sturdy of vane and air-jet vortex generators in a turbulent boundary layer has been carried out. Experiments were carried out in two facilities, one with a free-stream velocity of 20 m/s and a boundary layer thickness (6) of ...
Bray, Tim P.
core   +2 more sources

Predicting Solar Photovoltaic Power Output in Saudi Arabia's Jazan Region: Performance Comparison of Machine Learning Models

Energy Science &Engineering, EarlyView.
Workflow of the PV power estimation and ML forecasting methodology. ABSTRACT Accurate prediction of solar panel energy output is vital for managing power systems effectively and maintaining a stable electrical grid. This is especially important in regions that rely heavily on renewable sources. This research provides a direct comparison of five machine
Abdoalateef Alzhrani, Abdullahi Abubakar Mas'ud, Mohd Khairul Amri Kamarudin, Firdaus Muhammad‐Sukki, Abdullahi Mohammad   +4 more
wiley   +1 more source

3DCFDSimulationoftheRunawayTransientsofBulbTurbine

工程科学与技术, 2014
:In order to study of the unstable phenomena due to additional inertia forces during the runaway transients of hydropower units,the 3D simulation of the runaway transients in the whole passage of a bulb turbine was presented.The histories of pressure ...
夏林生, 程永光, 张晓曦, 张春泽   +3 more
doaj  

Internal flow characteristics in the draft tube of a Francis turbine under different working conditions

Advances in Mechanical Engineering
The Francis turbine stability is impacted significantly by the flow characteristics in its draft tube. In the case of a Francis turbine in a hydropower plant, numerical simulations were undertaken at the maximum and rated heads, respectively, under three
Yuanhang Hou, Xiaobing Liu, Ming Xiao, Haibin Zhang, Yinhui Cai, Yongzhong Zeng, Lei Zou, Jiayang Pang   +7 more
doaj   +1 more source

Numerical and experimental investigation of the effect of baffles on flow instabilities in a Francis turbine draft tube under partial load conditions

Advances in Mechanical Engineering, 2019
An improved method for preventing vortex rope formation and alleviating the associated pressure fluctuations in turbine draft tubes is investigated using baffles in the draft tube to hinder the swirling flow emerging from a Francis turbine runner.
Xing Zhou, He-gao Wu, Chang-zheng Shi
doaj   +1 more source

Expectations regarding rope lubrication today

, 2022
OITAF-NACS: ninth symposium, September 16-20, 2004, Vail Marriott Mountain Resort and Spa, Vail, Colorado, USA; International Organization for Transportation by Rope, North American Continental Section.Held at: Arthur Lakes Library, Colorado School of ...
Kopanakis, Georg A.
core