Research of impact of two kinds of check valve on vibration characteristics of long pipeline
In order to study implementation effect of different check valves, vibration test was conducted in testing systems equipped with spring-loaded passive check valve and hydraulic active check valve respectively.
LYU Fuyan +5 more
doaj +1 more source
A new approach to quantum backflow [PDF]
We derive some rigorous results concerning the backflow operator introduced by Bracken and Melloy. We show that it is linear bounded, self adjoint, and not compact.
Bogolubov N N +11 more
core +1 more source
Enhanced nitrification and denitrification by means of backflow without sludge
Municipal wastewater treatments were mainly carried out by activated sludge currently, for which anoxic/oxic(A/O) was widely accepted to enhance nitrogen(N)removals.In this process, wastewater flows back and forth between A and O tanks together with ...
LU Qinyuan +4 more
doaj +1 more source
The LLC-type resonant dual-active-bridge (LLC-DAB) DC-DC converter with a high voltage gain, high power density, and low backflow power has attracted increasing attention in recent years.
Zimeng Li +5 more
doaj +1 more source
Backflow Power Optimization of DAB Based on Asymmetric Duty Cycle and Internal Phase Shift Control
Dual active bridge (DAB) converter with single-phase-shifting (SPS) control would produce large backflow power when voltage regulation ratio deviates from 1 or under light load, an asymmetric duty cycle and internal phase shift (ADIPS) control was ...
Fei Xie, Hao Wang, Jie Shu
doaj +1 more source
Experimental Study on Backflow Patterns Induced by a Bilateral Groin Pair with Different Spacing
Groins are one of the popular manmade structures to modify the hydraulic flow and sediment response in river training. The spacing between groins is a critical consideration to balance the channel-depth and the cost of construction, which is generally ...
Cuiping Kuang +4 more
doaj +1 more source
Non-divisibility vs backflow of information in understanding revivals of quantum correlations for continuous-variable systems interacting with fluctuating environments [PDF]
We address the dynamics of quantum correlations for a bipartite continuous-variable quantum system interacting with its fluctuating environment. In particular, we consider two independent quantum oscillators initially prepared in a Gaussian state, e.g. a
Paris, M. G. A., Trapani, J.
core +2 more sources
Quantum backflow for many-particle systems
Quantum backflow is the classically-forbidden effect pertaining to the fact that a particle with a positive momentum may exhibit a negative probability current at some space-time point. We investigate how this peculiar phenomenon extends to many-particle
Barbier, Maximilien
core +1 more source
Benchmark Quantum Monte Carlo calculations of the ground-state kinetic, interaction, and total energy of the three-dimensional electron gas [PDF]
We report variational and diffusion Quantum Monte Carlo ground-state energies of the three-dimensional electron gas using a model periodic Coulomb interaction and backflow corrections for N=54, 102, 178, and 226 electrons.
Brown M D +6 more
core +3 more sources
Numerical study and experimental validation of a Roots blower with backflow design
A three-dimensional computational fluid dynamics (CFD) model of a Roots blower with a backflow design was established to analyse the effects of the backflow on the Roots blower's performance.
Shu-Kai Sun +3 more
doaj +1 more source

