Results 91 to 100 of about 68,067 (337)
Two-scale momentum theory for very large wind farms [PDF]
, 2016 A new theoretical approach is proposed to predict a practical upper limit to the efficiency of a very large wind farm. The new theory suggests that the efficiency of ideal turbines in an ideal very large wind farm depends primarily on a non-dimensional ...
Nishino, Takafumi
core +2 more sources
Catheterization and Cardiovascular Interventions, EarlyView.ABSTRACT We describe the “skipping rope technique” for managing burr entrapment during rotational atherectomy. Sequential counterclockwise rotational force is applied to the drive shaft, generating alternative torque dynamics. This maneuver provides a safe method to disengage a stuck rotaburr, offering operators an additional strategy for this ...
Thomas J. Ford +3 more
wiley +1 more source
Automated Process Optimization in a Novel Triple Shaft Mixer with Adaptive Mixing Modes
Chemie Ingenieur Technik, EarlyView.A novel multi‐purpose mixer with adjustable blade angle and a coaxial stirrer is developed, providing three degrees of freedom. An optimization strategy is integrated to autonomously identify optimal operating conditions through automated tests. The current draw of the main stirrer serves as the optimization criterion, while stirrer speeds, directions,
B. Schwarz, H. Kniele, J. A. Lindner
wiley +1 more source
CFD Simulation and Optimization of Very Low Head Axial Flow Turbine Runner
International Journal of Renewable Energy Development, 2015 The main objective of this work is Computational Fluid Dynamics (CFD) modelling, simulation and optimization of very low head axial flow turbine runner to be used to drive a centrifugal pump of turbine-driven pump. The ultimate goal of the optimization
Yohannis Mitiku Tobo +2 more
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This paper explores global solar PV deployment, cost trends, and grid integration challenges in 2025. It examines the role of energy storage in firming solar output and supporting electric vehicle (EV) growth, alongside policy shifts, investment flows, and technological innovations.
Ehsan Rezaee, S. Ravi P. Silva
wiley +1 more source
Journal of Applied Fluid Mechanics, 2016 This research study was aimed to develop a new concept design of a very low head (VLH) turbine using advanced optimization methodologies. A potentially local site was chosen for the turbine and based on its local conditions, such as the water head level ...
Weerapon Nuantong +1 more
doaj
DESIGN OF A SINGLE-STAGE AXIAL POWER TURBINE IN AN ULTRA-MICRO GAS TURBINE ENGINE
Rekayasa MesinToday's electrical energy needs require several alternative power and electrical energy storage. One system that can be developed to meet these needs is an ultra-micro gas turbine.
Rizal Gidion Solissa +2 more
doaj +1 more source
Cold-air performance of a 15.41-cm-tip-diameter axial-flow power turbine with variable-area stator designed for a 75-kW automotive gas turbine engine [PDF]
An experimental evaluation of the aerodynamic performance of the axial flow, variable area stator power turbine stage for the Department of Energy upgraded automotive gas turbine engine was conducted in cold air.
Kofskey, M. G. +2 more
core +1 more source
Prediction of the flow inside a micro gas turbine combustor [PDF]
, 2008 The main purpose of this study is to predict the flow dynamics inside a micro gas turbine combustor model. The flow field inside the combustor is controlled by the liner shape and size, wall side holes shape, size and arrangement (primary, secondary and
Eldrainy, Yehia A. +2 more
core
Latest results from the EU project AVATAR: aerodynamic modelling of 10 MW wind turbines [PDF]
, 2016 This paper presents the most recent results from the EU project AVATAR in which aerodynamic models are improved and validated for wind turbines on a scale of 10 MW and more. Measurements on a DU 00-W-212 airfoil are presented which have been taken in the
Barakos, G. +16 more
core +4 more sources