2 edition of Particle deposition and re-entrainment in relation to the hydrodynamics at a surface found in the catalog.
Particle deposition and re-entrainment in relation to the hydrodynamics at a surface
Bruce Pak Keung Yung
Thesis (Ph.D.) - University of Birmingham, Dept of Chemical Engineering, 1987.
|Statement||by Bruce Pak Keung Yung.|
depending upon the particle size, flow conditions (hydrodynamics), physico-chemical properties of the particles and the collector and the solution chemistry. A thorough understanding of filtration is essential for predicting the transport and fate of the particles within the bed of collectors. From the study of the deposition of model colloids on. Particles Binding Probability Function. In this study, a receptor–ligand model proposed by Decuzzi and Ferrari  is adopted to calculate the particle deposition adhesive strength of particles depends on the selective binding of the molecules expressed over the target surface and their counter-molecules conjugated at the particle surface.
Dynamics of particle loading in deep-bed filter. Transport, deposition and reentrainment Dynamics of particle loading in deep-bed filter. Transport, deposition and reentrainment Przekop, Rafał; Gradoń, Leon Chemical and Process Engineering , 37 (3), DOI: /cpe Rafal Przekop*, Leon Grado Warsaw University . (Flat Surface Longest Side FSLS) Particles falling onto a surface will rest in their mechanical stable state. Consequently the particle will show it’s largest surface area to the detection system and therefore also its longest dimension. Use is made of this property. .
This book presents a unified approach to the measurement, modelling and simulation of these processes, bringing together the disciplines of colliod and surface chemistry, hydrodynamics, and experimental and computational methods. Books related to Particle Deposition . The mean +/- SD fractional deposition was +/- by particle number and +/- by particle mass concentration, similar to model predictions. The number deposition fraction increased as particle size decreased, reaching +/- for the smallest particles (midpoint count median diameter = nm).
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Deposition and aggregation of small solid particles are encountered in many natural and industrial environments. Whether it be deposition of particles onto a surface immersed in a liquid suspension or aggregateion of individual particles, these processes are of enotmous significance.
Particle Deposition and Aggregation: Measurement, Modelling and Simulation describes how particle deposition and aggregation can be measured, modeled, and simulated in a systematic manner.
It brings together the necessary disciplines of colloid and surface chemistry, hydrodynamics, experimental methods, and computational methods to present a. This is well written, and has good coverage of all the aspects (I can think of) of particle deposition on surfaces. I haven't looked at the particle aggregation material that carefully, but I assume it is similarly thorough.
It has a few chapters dedicated to basics like Stern layers, Hamaker constants, and hydrodynamics.5/5(3). Colloidal Hydrodynamics and Transport Modelling of Particle Deposition Onto Ideal Collectors Modelling of Aggregation Processes Selection of a Simulation Method Implementation of Computer Simulations Experimental Techniques for Aggregation Studies Experimental Techniques in Particle Deposition Kinetics Purchase Particle Deposition and Aggregation - 1st Edition.
Print Book & E-Book. ISBNFor instance, measurements of particle deposition and resuspension showed that three different patterns can be obtained depending on the balance between hydrodynamics and interface chemistry: no.
Three mechanisms have been identified in the deposition process: particle transport from bulk flow to the surface, particle attachment on the surface, and particle re-entrainment from the surface [1,2,3,4].
Depending on particle sizes, particle transport can be divided into three regimes: diffusion, inertia, and impact [2,4]. Near the surface.
A smoothed particle hydrodynamics method is employed to study the mechanical and thermal behaviors of a fiber-filled composite with an anisotropic thermal conductivity (which is coupled to the orientation of the fibers) in a three-dimensional printing process for one- and two-layer deposition.
In this study, the coupled effect of ionic strength, particle size, and flow velocity on transport and deposition of suspended particles (SP) in saturated sand was undertaken. Three polydispersive SP populations (silt particles with the median ofand $$\upmu $$ m) were investigated using a pulse injection technique.
Modeling of retention and re-entrainment of mono- and poly-disperse particles: Effects of hydrodynamics, particle size and interplay of different-sized particles retention.
Science of The Total Environment, DOI: /env This is well written, and has good coverage of all the aspects (I can think of) of particle deposition on surfaces. I haven't looked at the particle aggregation material that carefully, but I assume it is similarly thorough.
It has a few chapters dedicated to basics like Stern layers, Hamaker constants, and s: 3. The particle deposition is a two-step process occurring in series: a transport step from the bulk of the liquid to the vicinity of the surface (according to hydrodynamics) is followed by an.
The primary force binding a particle to a surface is van der Waals attraction which is universal and dominating when separation distances between a particle and a surface decrease below I to 2 nm. Van der Waals attractive forces are lower in liquids than in gases so particles are easier to remove in liquids, partly because of this reduced adhesion.
Elimelech M, Gregory J, Jia X, Williams R () Particle deposition & aggregation, measurement, modelling and simulation. Butterworth Heinemann, Bodmin, Cornwall Google Scholar Etheve J, Dejardin P () Adsorption kinetics of lysozyme on silica at pH = correlation between streaming potential and adsorbed amount.
We present a numerical study of the fused deposition modeling 3D printing process of fiber-reinforced polymers by means of Smoothed Particle Hydrodynamics (SPH). For this purpose, a classical microstructure-based fiber suspension model coupled with a constitutive model for the suspending polymer is implemented within an SPH framework.
JOURNAL OF COLLOID AND INTERFACE SCIENCE ARTICLE NO. () CS BOOK REVIEW Particle Deposition and Aggregation: Measurement, Modelling and Simulation. Elimelech et al. ButterworthHeinemann Ltd., Stoneham, MA, The book deals in the general area of solid-particle deposition and aggregation in aqueous systems.
It is divided into four. The atmospheric particle mass size distribution (– μ m) and dry deposition flux were measured simultaneously with a wide range aerosol classifier (WRAC) and a smooth greased surface.
Microscopic techniques were used to size the particles collected on the deposition surface and generate mass size distributions of deposited particles. Real time, in-off line particle deposition measurement. 实时度量. Surface cleanliness.
1 Managing surface cleanliness starts by sampling relevant places close to your assembly site. Monitoring will allow a good prediction and provide tools for improvements. real time. William P. Johnson, Xiqing Li, Shoeleh Assemi, Deposition and re-entrainment dynamics of microbes and non-biological colloids during non-perturbed transport in porous media in the presence of an energy barrier to deposition, Advances in Water Resources, /res, 30,(), ().
In aerosol physics, deposition is the process by which aerosol particles collect or deposit themselves on solid surfaces, decreasing the concentration of the particles in the air. It can be divided into two sub-processes: dry and wet deposition.
The rate of deposition, or the deposition velocity, is slowest for particles of an intermediate size. Mechanisms for deposition are most effective. The image analysis through particle counting and density-based spatial clustering of application with noise (DBSCAN) revealed that both real and generated membranes had an uneven deposition of particles, which was caused by the complex structures of the membranes and by different particle .The model is based on a Smoothed Particle Hydrodynamics (SPH) discretization of the Navier–Stokes equations and Newton's equations for rigid body dynamics.
A δ ‐SPH term is added to the continuity equation, allowing for an effective interface description.Particle deposition is the spontaneous attachment of particles to surfaces.
The particles in question are normally colloidal particles, while the surfaces involved may be planar, curved, or may represent particles much larger in size than the depositing ones (e.g., sand grains).Deposition processes may be triggered by appropriate hydrodynamic flow conditions and favorable particle-surface.