نتایج جستجو برای: mixing time scale

تعداد نتایج: 2389951  

2009
Laurent Tanguy

Recent advances in microfabrication, and the apparent neces-sity of miniaturizing detection and diagnostic systems has led to the emer-gence of a new research field called lab-on-chip, which are mostly workingwith fluids. Liquids actuations at the micrometer scale allow the develop-ment of many new methods based on electric field and potential. Electro-wetting has been widel...

2005
Lanh T. Tran

A local linear kernel estimator of the regression function x 7→ g(x) := E[Yi|Xi = x], x ∈ R , of a stationary (d+1)-dimensional spatial process {(Yi,Xi), i ∈ Z } observed over a rectangular domain of the form In := {i = (i1, . . . , iN ) ∈ Z N |1 ≤ ik ≤ nk, k = 1, . . . ,N}, n = (n1, . . . , nN ) ∈ Z N , is proposed and investigated. Under mild regularity assumptions, asymptotic normality of th...

2009
Patricia M. Portillo Marianthi G. Ierapetritou Fernando J. Muzzio

a r t i c l e i n f o Keywords: Continuous powder mixing Statistical analysis ANOVA Homogeneity Residence time In this paper we examine the effect of rotation rate, mixing angle, and cohesion on the powder residence time and the content uniformity of the blend exiting from two continuous powder mixers. In addition, differences in mixing performance between the two blenders are examined. Analysi...

2007
P Polasek

The term mixing is confusing because it is used to describe transport mechanisms for both flash mixing (reagent dispersion and homogenisation with water mixing) and agitation (flocculation mixing) because each of these mechanisms requires different flow characteristics in order to take place with maximum efficiency. Flash mixing should take place under conditions of mixing on macro-scale with m...

Journal: :international journal of advanced design and manufacturing technology 0
reza ghaderi

piezoelectric microcantilevers (mcs) are a new generation of microbeams used in atomic force microscopes (afms). due to their miniaturization of afms as well as their increased imaging precision and speed, these mcs are more popular than their classical counterparts. given the widespread application of these beams in nanoparticle topography, analysis of their vibrating motion has attracted much...

2016
Ayoup M. Ghrair Othman Al-Mashaqbeh Andreas N. Angelakis

Demand for fresh water by the construction sector is expected to increase due to the high increase in the growth of construction activities in Jordan. This study aims to evaluate the potential of scale-up of the application of treated domestic wastewater in concrete from bench-scale to a full-scale. On the lab scale, concrete and mortar mixes using Primary and Secondary Treated Wastewater (PTW,...

Journal: :Computers & Chemical Engineering 2008
Dieter Bothe Carsten Stemich Hans-Joachim Warnecke

By definition, mixing in chemical reactors is a multi-scale process since it aims at reducing the length scale on which the chemical components are segregated. Only this way, micro-mixing can be accelerated in order to increase the intensity of mixing. Numerical simulations prove helpful to gain a better understanding of the interplay of transport mechanisms on different length scales, but requ...

2005
Stefano Morisi

Large neutrino mixing angles suggest that the Yukawa sector is invariant under permutations of the fermion families. This S3 permutation symmetry is broken at a large energy scale but much below the unification scale. Assuming that the lepton mass matrix is approximately diagonal, all neutrino mixing angles naturally come from the breaking of S3 →S2. In the neutrino sector, S2 remains (approxim...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
Tanguy Le Borgne Marco Dentz Philippe Davy Diogo Bolster Jesus Carrera Jean-Raynald de Dreuzy Olivier Bour

Anomalous dispersion in heterogeneous environments describes the anomalous growth of the macroscopic characteristic sizes of scalar fields. Here we show that this phenomenon is closely related to the persistence of local scale incomplete mixing. We introduce the mixing scale ε as the length for which the scalar distribution is locally uniform. We quantify its temporal evolution due to the compe...

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