Results 31 to 40 of about 18,985,339 (151)

Residence time distributions for in-line chaotic mixers

open access: yesPhysical Review E, 2022
We investigate the distributions of residence time for in-line chaotic mixers; in particular, we consider the Kenics, the F-mixer and the Multi-level laminating mixer, and also a synthetic model that mimics their behavior and allows exact mathematical calculations.
Poumaëre, Nelson   +2 more
openaire   +4 more sources

The distribution of range sizes of native and alien plants in four European countries and the effects of residence time [PDF]

open access: yes, 2008
Aim Do the statistical distributions of range sizes of native and alien species differ? If so, is this because of residence time effects? And can such effects indicate an average time to a maximum?
Stout, J.C.   +23 more
core   +1 more source

Spatial aggregation effects on the performance of machine learning metamodels for predicting transit time to baseflow

open access: yesEnvironmental Research Communications, 2023
Water transit time is the duration between the entry and exit of a parcel of water across a hydrologic system. It is a fundamental characteristic that links hydrologic transport, biogeochemical processing, and water quality, and it has broad implications
Mario A Soriano Jr, Reed Maxwell
doaj   +1 more source

Residence-time distributions for chaotic flows in pipes [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 1999
In this paper we derive two rigorous properties of residence-time distributions for flows in pipes and mixers motivated by computational results of Khakhar et al. [Chem. Eng. Sci. 42, 2909 (1987)], using some concepts from ergodic theory. First, a curious similarity between the isoresidence-time plots and Poincaré maps of the flow observed in Khakhar ...
Mezić, Igor   +2 more
openaire   +4 more sources

Numerical Investigation of the Hydrodynamic Conditions in A Multi-Strand Cc Tundish with Closed Outlets

open access: yesArchives of Metallurgy and Materials, 2014
In industrial conditions there are situations when the CC machine works under emergency. It can be result of mechanical or electrical causes, breakout of billet or problem with supplying new parts of liquid steel to the CC machine.
Merder T.
doaj   +1 more source

Modeling Residence Time Distribution (RTD) Behavior in a Packed-Bed Electrochemical Reactor (PBER)

open access: yesInternational Journal of Chemical Engineering, 2019
This paper focuses on understanding the electrolyte flow characteristics in a typical packed-bed electrochemical reactor using Residence Time Distribution (RTD) studies.
Sananth H. Menon, G. Madhu, Jojo Mathew
doaj   +1 more source

Modeling of Fluid Flow and Residence-Time Distribution in a Five-Strand Tundish

open access: yesMetals, 2020
Quantified residence-time distribution (RTD) provides a numerical characterization of mixing in the continuous casting tundish-thus allowing the engineer to better understand the metallurgical performance of the reactor.
Dong-Yuan Sheng, Qiang Yue
doaj   +1 more source

Nickel removal from an industrial effluent by electrocoagulation in semi-continuous operation: Hydrodynamic, kinetic and cost analysis

open access: yesResults in Engineering, 2023
In the nickel and cobalt production plant located in Punta-Gorda Cuba, an effluent liquor is obtained with several pollutants species of Ni(II)–NH3–CO2–SO2–H2O system.
Armando Rojas Vargas   +3 more
doaj   +1 more source

Dataset for the simulated biomass pyrolysis in rotary kilns with varying particle residence time distributions

open access: yesData in Brief, 2021
Slow pyrolysis of biomass is commonly performed in rotary kilns. The effect of the particle residence time distribution on biomass conversion is often neglected when numerically modeling such systems.
Mario Pichler   +4 more
doaj   +1 more source

Residence time distribution for a class of Gaussian Markov processes [PDF]

open access: yesPhysical Review E, 1999
We study the distribution of residence time or equivalently that of ``mean magnetization" for a family of Gaussian Markov processes indexed by a positive parameter $α$. The persistence exponent for these processes is simply given by $θ=α$ but the residence time distribution is nontrivial. The shape of this distribution undergoes a qualitative change as
Dhar, Abhishek, Majumdar, Satya N
openaire   +3 more sources

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