Results 91 to 100 of about 66,745 (254)
Advanced Functional Materials for Marine Energy Utilization
Interdisciplinary Materials, EarlyView.Marine renewable energy is an important future clean energy supply. We construct and sort out the material system for marine energy capture and conversion, transmission, storage, and utilization for the first time. ABSTRACT Several features of marine energy, including large reserves, sustainable utilization, environmental friendliness, make it a ...
Qiang Yu +7 more
wiley +1 more source
Three-dimensional Unsteady Numerical Simulation of Reversible Flow Passage of Pump Turbine
Chemical Engineering Transactions, 2018 The purpose of this paper is to study the three-dimensional unsteady numeral simulation of the whole flow passage in the reversible pump turbine. To this end, the geometric model was established by CFD numerical simulation method, and the rated flow of ...
Wei Zang
doaj +1 more source
Dual-fuel, dual-mode rocket engine [PDF]
, 1989 The invention relates to a dual fuel, dual mode rocket engine designed to improve the performance of earth-to-orbit vehicles. For any vehicle that operates from the earth's surface to earth orbit, it is advantageous to use two different fuels during its ...
Martin, James A.
core +1 more source
Materials and Corrosion, EarlyView.A novel thick‐track electrical resistance probe with five sensing tracks was developed for offshore corrosion monitoring. The probe provides reliable, real‐time corrosion‐rate measurements in natural seawater. Corrosion‐rate trends showed strong agreement with weight‐loss coupon measurements.
Mohammad Hassanzadeh +5 more
wiley +1 more source
Twin-spool turbopumps for ''low'' net positive suction pressure operations [PDF]
, 1970 Modified single-shaft turbopump incorporates inducer and main pump, each separately driven at different speeds through coaxial-shaft arrangement. Inducer operates at low speed for low net positive suction pressure, main pump operates at high speed to ...
Bair, E. K. +2 more
core +1 more source
Vibration Attenuation of Cantilever Beam Using Electromagnetic Delayed Feedback
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT This study presents a combined analytical and numerical investigation of a single‐input single‐output delayed feedback controller designed to suppress vibrations in a cantilever beam actuated by an electromagnet positioned beneath its free end. An analytical model was developed using the linearized equation of motion for a transversely excited
Mohammad Alabdullah, Khaled Alhazza
wiley +1 more source
People and Nature, EarlyView.Abstract Debates abound regarding how to use land for nature recovery and environmental governance. Such decisions require an understanding of benefits and trade‐offs, and increasingly rely on vast quantities of data, delivered through digital technologies.
Lucy Jenner +3 more
wiley +1 more source
Systematic analysis on the energy loss in pump-turbines
Advances in Mechanical EngineeringThe pump-turbine is a key component in pumped-storage power stations, operating under complex conditions. RANS (Reynolds-Averaged Navier-Stokes) is commonly used for numerical simulations, but the differences among various RANS models under different ...
Miao Guo +5 more
doaj +1 more source
Digital surveillance of animals and nature recovery
People and Nature, EarlyView.Abstract Digital surveillance technologies (DSTs) are widely applied in nature recovery for their potential to generate novel data on species and ecosystems through digital tracking, automation (e.g. from hazardous locations) and from newly recruited citizen scientists.
William M. Adams
wiley +1 more source
Small hydropower generation using pump as turbine; a smart solution for the development of Pakistan's energy. [PDF]
Heliyon, 2023 Ali A +7 more
europepmc +1 more source