Results 31 to 40 of about 158,656 (309)
A position-free control strategy in the full speed domain based on an electro-hydraulic pump
Measurement + ControlThe electric plunger hydraulic pump plays a crucial role in hydraulic transmission technology by integrating an electric motor and a hydraulic pump. The main objectives in designing such devices are to improve efficiency, achieve miniaturization, and ...
Xinguo Qiu +4 more
doaj +1 more source
Geometrical effects on performance and inner flow characteristics of a pump-as-turbine: A review
Advances in Mechanical Engineering, 2020 A pump-as-turbine is a hydraulic machine that can operate as a pump and turbine at the same time. Pump-as-turbine happens to be the most appropriate method for meeting the world’s energy demands, particularly in rural and isolated areas of a country ...
Stephen Ntiri Asomani +4 more
doaj +1 more source
Efficient pressure-transformer for fluids [PDF]
, 1970 Fluid transformer utilizes fluid under pressure at one level to drive series of free pistons in positive displacement pump. Pump in turn delivers hydraulic fluid at different pressure level to a load.
Morando, J. A.
core +1 more source
A superelement-based method for computing unsteady three-dimensional potential flows in hydraulic turbomachines [PDF]
, 1999 A numerical method is presented for the computation of unsteady, three-dimensional potential flows in hydraulic pumps and turbines. The superelement method has been extended in order to eliminate slave degrees of freedom not only from the governing ...
Esch, B.P.M. van +2 more
core +3 more sources
Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration
Advanced Functional Materials, EarlyView.Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley +1 more source
The Unsteady, Dynamic Characterization of Hydraulic Systems with Emphasis on Cavitation and Turbomachines [PDF]
, 1978 The ability to analyze and model the unsteady, dynamic response of hydraulic systems has arisen from the need for operational stability, flexibility and controlled transient behavior.
Brennen, Christopher
core
Advanced Functional Materials, EarlyView.Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco +7 more
wiley +1 more source
Applied SciencesThe conventional hydraulic system of excavators suffers from significant valve throttling losses and inadequate matching between the hydraulic power source and the load, which substantially impact the system’s overall energy consumption and severely ...
Aihuan He +3 more
doaj +1 more source
Rocketdyne's advanced coal slurry pumping program [PDF]
, 1977 The Rocketdyne Division of Rockwell International Corporation is conducting a program for the engineering, fabrication, and testing of an experimental/prototype high-capacity, high-pressure centrifugal slurry feed pump for coal liquefaction purposes. The
Davis, D. E., Gilman, H. H., Wong, G. S.
core +1 more source
Multiobjective optimization of water distribution systems accounting for economic cost, hydraulic reliability, and greenhouse gas emissions [PDF]
, 2013 In this paper, three objectives are considered for the optimization of water distribution systems (WDSs): the traditional objectives of minimizing economic cost and maximizing hydraulic reliability and the recently proposed objective of minimizing ...
Angus R. Simpson +37 more
core +1 more source