Results 31 to 40 of about 21,157 (224)

Control and Dynamic Characteristics Analysis for the Double-Compound Axial Piston Pump Based on Working Conditions

Machines, 2022
The periodic flow and pressure pulsation of the axial piston pump can lead to periodic vibration, noise, and even damage to various components in the hydraulic system.
Zhiyuan Sun, Qingliang Zeng, Lirong Wan, Hanzheng Dai   +3 more
doaj   +1 more source

Traces of surfactants can severely limit the drag reduction of superhydrophobic surfaces [PDF]

, 2017
Superhydrophobic surfaces (SHSs) have the potential to achieve large drag reduction for internal and external flow applications. However, experiments have shown inconsistent results, with many studies reporting significantly reduced performance. Recently,
Goldstein, Raymond E., Landel, Julien R., Luzzatto-Fegiz, Paolo, Peaudecerf, François J.   +3 more
core   +2 more sources

Research of single phase-shift close-loop control for bi-directional full-bridge DC-DC converter

Gong-kuang zidonghua, 2014
In view of problem of low efficiency of bi-directional full-bridge DC-DC converter based on traditional single phase-shift control, the paper proposed a design scheme of bi-directional full-bridge DC-DC converter based on single phase-shift close-loop ...
YANG Xiaokang, LI Hequn, GAO Qiaomei, CHENG Hong   +3 more
doaj   +1 more source

A new modulation strategy and power balance method of unsymmetrical CHB inverter

IET Renewable Power Generation, 2021
There exist the problems of the low utilization rate of DC voltage, power imbalance and current backflow in the modulation process of traditional unsymmetrical cascaded units.
Renxi Gong, Xinyu Zhang, Jianfeng Liu, Bo Xue   +3 more
doaj   +1 more source

Physical Meaning of the Current Vertex Corrections: DC and AC Transport Phenomena in High-Tc Superconductors

, 2005
Famous non-Fermi liquid-like behaviors of the transport phenomena in high-Tc cuprates (Hall coefficient, magnetoresistance, thermoelectric power, Nernst coefficient, etc) are caused by the current vertex corrections in neary antiferromagnetic (AF) Fermi ...
Kontani, Hiroshi
core   +3 more sources

Charge-Spin Separation in 2D Fermi Systems: Singular Interactions as Modified Commutators, and Solution of 2D Hubbard Model in Bosonized Approximation [PDF]

, 1995
The general 2-dimensional fermion system with repulsive interactions (typified by the Hubbard Model) is bosonized, taking into account the finite on-shell forward scattering phase shift derived in earlier papers.
A. A. Abrikosov, A. El Azrak, A. Houghton, C. di Castro, D. G. Clarke, D. Khveshchenko, D. Khveshchenko, F. D. M. Haldane, F. D. M. Haldane, G. Engelbrecht, G. Engelbrecht, G. Engelbrecht, H. Fukuyama, H. Fukuyama, P. C. E. Stamp, P. W. Anderson, P. W. Anderson, P. W. Anderson   +17 more
core   +3 more sources

Unusual low-temperature thermopower in the one-dimensional Hubbard model

, 1993
The low-temperature thermoelectric power of the repulsive-interaction one-dimensional Hubbard model is calculated using an asymptotic Bethe ansatz for holons and spinons.
A. B. Kaiser, B. S. Shastry, C. A. Stafford, C. A. Stafford, C. F. Coll, E. H. Lieb, F. D. M. Haldane, F. Woynarovich, F. Woynarovich, F. Woynarovich, H. J. Schulz, J. Carmelo, J. F. Kwak, J. Sugiyama, M. Ogata, N. Kawakami, P. M. Chaikin, P. M. Chaikin, P. W. Anderson, P. W. Anderson, P. W. Anderson, P. W. Anderson, R. C. Yu, S. D. Obertelli, W. Jiang, W. Kang, X. Q. Xu   +26 more
core   +2 more sources

Wall effects on the transportation of a cylindrical particle in power-law fluids [PDF]

, 2011
The present work deals with the numerical calculation of the Stokes-type drag undergone by a cylindrical particle perpendicularly to its axis in a power-law fluid.
A. Ambari, A. Ben Richou, A. Despeyroux, Batchelor, Champmartin, Douglas, Ferreira, Frankel, Happel, Lamb, Lyon, Marus˘ić-Paloka, Oseen, Peaceman, Peyret, Quartappelle, Richou, Scirocco, semin, Sepehr, Sivakumar, Stokes, Tanner, Tomita, Tucker, Wasserman, Whitney   +26 more
core   +5 more sources

Three-dimensional coating and rimming flow : a ring of fluid on a rotating horizontal cylinder [PDF]

, 2013
The steady three-dimensional flow of a thin, slowly varying ring of Newtonian fluid on either the outside or the inside of a uniformly rotating large horizontal cylinder is investigated.
Duffy, Brian, Leslie, George Adam, Wilson, Stephen   +2 more
core   +1 more source

An Efficiency-Optimized Isolated Bidirectional DC-DC Converter with Extended Power Range for Energy Storage Systems in Microgrids

Energies, 2012
This paper proposes a novel extended-single-phase shift (ESPS) control strategy of isolated bidirectional full-bridge DC-DC converters (IBDCs) which are a promising alternative as a power electronic interface in microgrids with an additional function of ...
Xiaolong Shi, Jiuchun Jiang, Xintao Guo
doaj   +1 more source