Results 31 to 40 of about 249,030 (262)
An improved model of continuous leaching systems using segregation approach [PDF]
International Journal of Mining and Geo-Engineering, 2020 In this study, a simplified dissolution model has been developed to evaluate the performance of continuous leaching reactors. The model considers continuous reduction of the surface area of particles using the distribution of their size and residence ...
Abdolrahim Foroutan +3 more
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Application of environmental tracers for investigation of groundwater mean residence time and aquifer recharge in fault-influenced hydraulic drop alluvium aquifers [PDF]
Hydrology and Earth System Sciences, 2019 Investigating groundwater residence time and recharge sources is crucial for water resource management in the alluvium aquifers of arid basins. Environmental tracers (chlorofluorocarbons, 3H, 14C, δ2H, δ18O) and groundwater hydrochemical components are ...
B. Ma +7 more
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On mean residence times in compartments [PDF]
Mathematical Biosciences, 1981 Abstract This paper is concerned with a set of parameters which measure the mean time a random particle resides in individual compartments in response to a given load distribution. These parameters are related to other time parameters and to each other.
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Determination of the residence-time distribution in industrial dryer for the production of recycled polyester [PDF]
Chemical Industry and Chemical Engineering Quarterly, 2021 The study proposes the evaluation of the residence-time distribution (RTD) in situ in an industrial dryer for the production of recycled polyester fibers (PES) from colorless polyethylene terephthalate (PET) flakes without interruption of the production.
Zauli da Silva Felipe +3 more
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Design and Development of Mathematical Model for Static Mixer [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2016 A numerical model for simulating Residence Time Distribution (RTD) of turbulent flows in helical static mixers is proposed and developed to improve the understanding of static mixers.
Akila Rajamanickam, Krishnaswamy Balu
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On the Mean Residence Time in Stochastic Lattice-Gas Models [PDF]
Journal of Statistical Physics, 2018 A heuristic law widely used in fluid dynamics for steady flows states that the amount of a fluid in a control volume is the product of the fluid influx and the mean time that the particles of the fluid spend in the volume, or mean residence time. We rigorously prove that if the mean residence time is introduced in terms of sample-path averages, then ...
Zamparo, Marco +2 more
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Numerical Simulations of a Gas–Solid Two-Phase Impinging Stream Reactor with Dynamic Inlet Flow
Energies, 2018 Fluid flow characteristics and particle motion behavior of an impinging stream reactor with dynamic inlet flow (both inlet velocity patterns exhibit step variation) are investigated and discussed with the computational fluid dynamics–discrete ...
Xueqing Liu +4 more
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Pharmaceutics, 2021 Twin-screw wet granulation is a crucial unit operation in shifting from pharmaceutical batch to continuous processes, but granulation kinetics as well as residence times are yet poorly understood.
Timo Plath +3 more
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Comment on mean residence time in flow systems [PDF]
Chemical Engineering Science, 1985 Critique d'un article de Awasthi et Vasudeva paru ibid., 1983, 38, 313, selon lequel le temps de sejour d'un systeme en ecoulement peut etre superieur au quotient du volume et du ...
Curl, Rane L., Mann, Uzi
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Journal of Hydrology and Hydromechanics, 2017 The objective of the study was to evaluate the spatial distribution of peakflow pre-event water contributions and streamwater residence times with emphasis on land use patterns in 38 subcatchments within the 687 km2 large mesoscale transboundary ...
Šanda Martin +7 more
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