Relevant bibliographies by topics / Fluidisation

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Fluidisation'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2025

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Journal articles on the topic "Fluidisation"

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Berkowicz, Gabriela, and Magdalena Miłkoś. "Fluidisation of iron-based oxygen carrier for chemical looping combustion." E3S Web of Conferences 116 (2019): 00008. http://dx.doi.org/10.1051/e3sconf/201911600008.

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The study focuses on the fluidisation of an iron-based material for chemical looping combustion. The Fe/FexOy system can act as an oxygen carrier. This material can be used to transfer the oxygen in the chemical looping combustion ensuring easy CO2 sequestration during the process of burning the fuels. This kind of process would be possible only by introducing the oxygen carrier into a fluidised state. The purpose of the presented work is to determine the size of grains of an iron-based material and the minimum fluidisation velocity of the gas which can ensure a proper fluidisation of the material.
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Stanley-Wood, N. G., E. Obata, H. Takahashi, and K. Ando. "Liquid fluidisation curves." Powder Technology 60, no. 1 (1990): 61–70. http://dx.doi.org/10.1016/0032-5910(90)80104-7.

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Sharafodin, Shahab, Milad Latifi, and Masoud Ghodsian. "Experimental Investigation of Leakage Flow Rate and Fluidisation beneath Polyethylene Pipes in Non-Uniform Soils." Water 16, no. 8 (2024): 1156. http://dx.doi.org/10.3390/w16081156.

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Soil fluidisation around buried pipes is one of the water leakage effects that has a direct influence on the ultimate failure of pipelines. In this research, using a laboratory model, the fluidisation caused by water leakage from three cracks with three lengths (14, 17, and 20 mm) and a 3 mm diameter hole for five pressures (1.5–5.5 bar) in non-uniform soils has been evaluated. The experiments were carried out both for pipes buried in soil, as well as exposed pipes. In the buried pipe tests, leakage flow rate, fluidisation, and mobile bed zone dimensions were investigated. The results showed that the increase in leakage flow rate due to an increase in pressure and crack length in exposed pipes is higher than in buried pipes. The exponent of the leakage–pressure relationship was obtained between 0.40 and 0.47 for the hole and between 0.8 and 1.9 in the crack. Observing different development patterns for fluidisation and mobile bed zones in cracks and holes, new relationships are presented for the height, width, and cross-sectional area of the leakage zones.
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Downmore, Musademba, Simbi David Jambgwa, and Kuipa Pardon Kusaziwa. "Effect of bed particle size and temperature variation on the minimum fluidisation velocity: A comparison with minimum fluidisation velocity correlations for bubbling fluidised bed designs." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 233, no. 5 (2019): 1001–12. http://dx.doi.org/10.1177/0954408918821769.

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This work presents hydrodynamic studies on the effect of temperature and bed particle variation on minimum fluidisation velocity. A lab-scale bubbling fluidised bed made of stainless steel, with column height of 1 m and internal diameter of 0.15 m was used. Five Geldart-B-type alumina bed materials of mean particle sizes 75, 177, 250, 320 and 500 µm were used and the bed temperature was varied between 50 ℃ and 600 ℃. The hydrodynamic results showed that minimum fluidisation velocity varied directly with mean particle size and inversely with temperature. The pressure drop was found to increase with bed temperature for all the sizes of bed particles. The minimum fluidisation velocity is a key parameter in the design of fluidised bed systems and as such its prediction lies with good choice of correlation. The experimental values were compared with predicted minimum fluidisation velocity from six correlations, with the overall objective of verifying the most suitable correlation. Of the correlations used, the Hartman et al. correlation showed very good fitting with experimental data for beds of 75 and 177 µm particles, and the Mohanta et al. correlation showed good fitting with 250–500 µm bed particles. The models exhibited very good coefficient of multiple determination ( R2), very low fitting errors and low geometric standard deviations across the range of particle sizes and temperature variation. However, the lack of understanding of the parameters such as voidage, particle sphericity, density and viscosity would need more attention, particularly in view of the sensitivity of the minimum fluidisation velocity predictions to these parameters. Further studies are therefore recommended for the verification of the correlations in this regard.
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Di Felice, Renzo. "Hydrodynamics of liquid fluidisation." Chemical Engineering Science 50, no. 8 (1995): 1213–45. http://dx.doi.org/10.1016/0009-2509(95)98838-6.

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Steinmetz, Daniel, and Claude Laguerie. "La fluidisation gazeuse. / Gas fluidization." Sciences Géologiques. Bulletin 46, no. 1 (1993): 183–95. http://dx.doi.org/10.3406/sgeol.1993.1904.

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Richardson, J. F., and W. N. Zaki. "Sedimentation and fluidisation: Part I." Chemical Engineering Research and Design 75 (December 1997): S82—S100. http://dx.doi.org/10.1016/s0263-8762(97)80006-8.

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Foscolo, P. U., L. G. Gibilaro, and R. Felice. "Hydrodynamic scaling relationships for fluidisation." Applied Scientific Research 48, no. 3-4 (1991): 315–28. http://dx.doi.org/10.1007/bf02008203.

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Cabriolu, Raffaela, Jürgen Horbach, Pinaki Chaudhuri, and Kirsten Martens. "Precursors of fluidisation in the creep response of a soft glass." Soft Matter 15, no. 3 (2019): 415–23. http://dx.doi.org/10.1039/c8sm01432a.

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Cicéron, Delphine, Jacques Comiti, Rajendra P. Chhabra, and Maurice Renaud. "Non-Newtonian fluidisation of spherical particles." Chemical Engineering Science 57, no. 16 (2002): 3225–34. http://dx.doi.org/10.1016/s0009-2509(02)00195-1.

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Dissertations / Theses on the topic "Fluidisation"

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Edwards, D. N. "Vibration and fluidisation of powders." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373244.

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Bergemann, Nico. "Fluidisation of chocolate under vibration." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/fluidisation-of-chocolate-under-vibration(dbcd7d1b-33cc-4cc3-954e-6736d718be7d).html.

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The aim of this thesis was to understand how a non-Newtonian fluid like chocolate fluidises under vibration. The problem was approached both experimentally and computationally, employing the finite element method as implemented in oomph-lib. In order to model a non-Newtonian fluid its constitutive behaviour has to be known. For this purpose, rheological measurements on tempered chocolate were performed. The chocolate was modelled using generalised Newtonian models for the viscosity and it was found that the Sisko model provided the best fit to the data. The generalised Newtonian Navier-Stokes equations were implemented within oomph-lib and their validation against analytical solutions yielded excellent agreement. Both the experiments and the computations for a sessile drop of chocolate, which is vibrated vertically, spreading on a layer of the same fluid yielded qualitatively similar results. The parameter which controls the spreading is the acceleration arising from the vibration. The drop rests on the layer and does not spread under gravity and small accelerations. However, as the acceleration increases and exceeds a threshold the drop starts to spread out. For a constant amplitude vibration, the spreading rate increases with increasing frequency and for large frequencies approaches a theoretical spreading law which corresponds to viscous dominated spreading of a Newtonian drop.
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Alsaydalani, Majed Omar Ahmad. "Internal fluidisation of granular material." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/385439/.

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Di, Felice Renzo. "Liquid fluidisation of binary-solid mixtures." Thesis, University College London (University of London), 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362618.

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Asadipour, Nina. "Rheological models for tissue relaxation and fluidisation." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/392716.

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We present a cell-centred model for the simulation of multicellular soft tissues that takes into account the underlying active process at the cytoskeletal level, and allows for active and passive cell-cell reorganisation and intercalation. In the cell centred model, each cell is treated as a discrete entity and adjacent cell centres are connected by bar elements holding the rheological properties of cell-cell interactions. Cell-cell connectivity is determined with Delaunay triangulation of the cell-centres (nuclei). We use Voronoi tessellation and barycentric tessellation in order to represent the cell domains. We develop a viscoelastic bar element that can handle multiple rheological laws with non-linear elastic and non-linear viscous material models. The bar element is built by joining in series an elastic and viscous bar, constraining the middle node position to the bar axis with a reduction method, and statically condensing the internal degrees of freedom. Also, we develop a new rheological model based on dynamical changes of the resting length which mimics the viscoelastic response. It has been experimentally observed that cells exhibit a fluidisation process when subjected to a transient stretch, with an eventual recovery of the mechanical properties upon removal of the applied deformation. This fluidisation process is characterised by a decrease of the stored modulus and an increase of the phase angle. We propose a rheological model which is able to reproduce this combined mechanical response. The model is described in the context of continua and adapted to a cell-centred particle system that simulates the cell-cell interaction. Mechanical equilibrium is coupled with two evolution laws: (i) one for the reference configuration, and (ii) another for the porosity or polymer density. The first law depends on the actual elastic strain of the tissue, while the second assumes different remodelling rates during porosity increase and decrease. The theory is implemented on the particle based model and tested on a stretching numerical simulation, which agrees with the experimental measurements for different stretching magnitudes. The rheological law is also applied to simulate the stress relaxation that suspended monolayers undergo when subjected to a constant stretch. The numerical model is here applied on in multiple branches, so that the response with different characteristic times is reproduced. By using Delaunay triangulations and Voronoi tessellations, the model presented in this thesis also opens the possibility to test different combined rheological laws in cytoskeletal and cortical regions of cellular networks.<br>Los tejidos activos muestran un comportamiento poroelástico, reblandecimiento, endurecimiento y fluidización reversible. El resultado de este comportamiento no lineal es debido a los múltiples procesos que tienen lugar a distintas escalas: proteínas motoras activas que actúan sobre la estructura polimérica de la célula, (de-)polimerización y remodelado del citoesqueleto, cambios en el volumen del citoplasma y cambios de la conectividad entre células a nivel del tejido. El objetivo principal de esta tesis es entender las propiedades mecánicas de los tejidos blandos al estar sometidos a un proceso de fluidización y relajación. Para conseguir este objetivo, se desarrolla una teoría matemática y métodos de simulación que reproducen las observaciones experimentales. Se presenta un modelo centrado en la célula par la simulación de tejidos multicelulares blandos que tiene en cuenta los procesos activos en el citoesqueleto, y permite la reorganización e intercalación activa y pasiva entre células. En el modelo centrado, cada célula se considera una entidad discreta a la cual las células adyacentes se conectan mediante elementos barra que contienen las propiedades reológicas de la interacción celular. La conectividad entre células se determina per medio de una triangulación de Delaunay de los núcleos de los centros celulares (núcleos). Se recurre a un teselado de Voronoi y a uno usando los baricentros de la triangulación para representar los dominios de las células. Se desarrolla un elemento de barra viscoelástico que puede incorporar múltiples leyes reológicas con modelos elásticos y viscosos no lineales. El elemento se construye a partir dela unión en serie de elementos elásticos y viscosos, restringiendo la posición del nodo interno a estar en el eje de la barra, y recurriendo a la condensación estática de los grados de libertad internos. Además, se desarrolla un nuevo modelo reológico basado en los cambios dinámicos de la longitud de reposo que mimetiza la respuesta viscoelástica. Se ha observado experimentalmente que las células muestran un proceso de fluidización cuando están sujetas a un estiramiento transitorio, y que recobran sus propiedades mecánicas al desaparecer la deformación impuesta. Este proceso de fluidización se caracteriza por una reducción del módulo de rigidez elástico (stored modulus) y un incremento del ángulo de fase. Se propone un modelo reológico que permite reproducir esta respuesta mecánica combinada. El modelo se describe en el contexto del medio continuo y adaptado al sistema de partículas centrado en las células que simula la interacción intercelular. El equilibrio mecánico se acopla con dos leyes de evolución: (i) una para la configuración de referencia, y (ii) para la porosidad o densidad polimérica. La primera ley depende en la deformación elástica del tejido, mientras que la segunda sume distintas velocidades de deformación durante el incremento y decremento de porosidad. La teoría se implementa en el modelo de partículas y aplicado en una simulación numérica. Los resultados se ajustan a las medidas experimentales para distintos valores del alargamiento máximo. La ley reológica es utilizada también para simular la relajación de tensiones de una monocapa creada en suspensión y sujeta a una deformación constante. El modelo numérico se aplica a distintas ramas para reproducir la respuesta con distintos tiempos característicos. Mediante el uso de triangulaciones de Delaunay y teselados de Voronoi, el modelo presentado en esta tesis abre la posibilidad de combinar distintas leyes reológicas en regiones del citosequeleto y del córtex celular.
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Gevrin, Frédéric. "Modélisation dynamique de la fluidisation solide-liquide." Toulouse, INPT, 2002. http://www.theses.fr/2002INPT002G.

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Ce travail est consacré à l'application d'un modèle diphasique eulérien à la fluidisation solide-liquide. L'approche utilisée pour décrire le mouvement de la phase solide est issue de la théorie cinétique des milieux granulaires, en y incluant les effets du fluide interstitiel à différentes échelles (mouvement moyen et fluctuant). Le calcul est 2D et instationnaire. Le modèle est d'abord évalué en comparant l'évolution de la pression granulaire en fonction de la fraction solide aux données expérimentales de Zenit et al. , dans une gamme étendue de concentration et pour trois types de billes (nylon, verre et acier)fluidisées dans de l'eau et présentant des nombres de Stokes particulaires contrastés. Cette comparaison a permis de valider globalement l'approche proposée, en notant toutefois que l'écart observé entre valeurs calculées et mesurées décroît lorsque le nombre de Stokes augmente. Les mécanismes de production/dissipation des fluctuations de la phase solide sont ensuite analysés en évaluant le poids respectif des termes source/puits et par une étude de sensibilité du modèle aux différents paramètres et lois de fermeture. Cette étude met en évidence les effets dominants du terme de dissipation par la force de traînée et du terme de production par le cisaillement moyen, dans la plupart des cas étudiés.
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Chédeville-Monzo, Corentin. "Mécanismes d'auto-fluidisation des écoulements pyroclastiques : approche expérimentale." Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF22684/document.

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Les écoulements pyroclastiques sont des mélanges à haute température de gaz et de particules volcaniques qui peuvent se propager sur de très grandes distances. Cette forte « mobilité » est souvent attribuée à leur capacité à se fluidiser, c’est-à-dire à générer et conserver une forte pression interstitielle de gaz qui réduit les forces de friction interne. L’objectif principal de cette thèse est de comprendre comment les irrégularités des terrains sur lesquelles se propagent les écoulements pyroclastiques peuvent favoriser leur fluidisation. Une première série d’expériences de laboratoire a consisté à générer des écoulements de particules fines (diamètre de 45-90 μm) sur des substrats de différentes rugosités. Les résultats montrent que la distance de parcours des écoulements augmente avec la rugosité, allant jusqu’à doubler par rapport à la distance de parcours sur fond lisse. Des analyses de vidéos haute vitesse et des mesures de pression interstitielle d’air à la base des écoulements montrent que la tête (partie antérieure) des écoulements qui se propagent sur un substrat rugueux s’auto-fluidisent en conséquence de la sédimentation des particules dans les interstices du substrat, chassant l’air qui remonte et percole dans l’écoulement. Ce mécanisme d’auto-fluidisation est efficace pour toutes les inclinaisons étudiées (0-30°), suggérant qu’il est susceptible de se produire tout au long de la mise en place d’un écoulement pyroclastique. Une seconde étude a consisté à faire chuter des lits de particules dans une colonne statique. Les résultats montrent que même pour une hauteur de relâchement relativement faible (20 cm), le mélange peut entièrement s’auto-fluidiser durant sa chute. Quand les particules sont suffisamment fines (&lt;100 μm) la pression interstitielle dans le dépôt diffuse pendant plusieurs secondes, la durée de cette diffusion augmentant avec l’augmentation de l’épaisseur du lit et la diminution de taille des particules. Les temps de diffusions les plus longs sont observés avec un matériau provenant d’un dépôt d’écoulement pyroclastique (~30 s pour des lits de 28.5 cm d’épaisseur). Ces résultats suggèrent que les écoulements pyroclastiques qui se propagent sur des terrains accidentés peuvent s’auto-fluidiser et conserver une faible friction au cours de leur mise en place<br>Pyroclastic flows are hot mixtures of gas and particles that can propagate over large distances. This high “mobility” is often attributed to their ability to be fluidized, that is, to generate and retain high gas pore pressure that reduces internal friction forces. The main objective of this thesis is to understand how irregularities of substrates on which pyroclastic flows propagate can enhance their fluidization. A first set of laboratory experiments consisted of the generation of fine-grained flows (diameter of 45-90 μm) on substrate of various roughness. Results show that the flow runout distance increases with the substrate roughness, and is up to twice the runout on a smooth substrate. High speed video analyses and air pore pressure measurements at the flow base show that the flow head propagating over a rough substrate can auto-fluidize because of particles sedimentation into the substrate interstices, which forces the air to escape upward and percolate through the flow. This auto-fluidization mechanism is efficient at all inclinations investigated (0-30°), suggesting that it could occur during the whole emplacement of a pyroclastic flow. A second study consisted of the vertical release of beds of particles in a static column. Results show that the granular mixture can be fully fluidized, even when collapsing from a relatively low height (20 cm). When particles are fine enough (&lt;100 μm), pore pressure in the deposit diffuses for several seconds, the diffusion duration increasing with increasing bed thickness and decreasing particle size. The longest diffusion durations are observed for pyroclastic flow deposit materials (~30 s for 28.5 cm thick beds). These results suggest that pyroclastic flows propagating on irregular terrains can auto-fluidize and preserve low internal friction during their emplacement
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Nezzal, Amale. "Etude de la fluidisation agitée des poudres fines." Compiègne, 1996. http://www.theses.fr/1996COMP916S.

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La fluidisation des particules fines est difficile, voire meme impossible a cause des forces interparticulaires elevees. Ces poudres appartiennent aux groupes a et c de la classification de geldart. Les poudres du groupe a possedent des forces interparticulaires non negligeables, mais petites comparees aux forces hydrodynamiques presentes dans un lit fluidise. En revanche, les poudres du groupe c sont tres cohesives. Les forces interparticulaires empechent le gaz d'individualiser les particules et entrainent le plus souvent des phenomenes de renardage et de pistonnage. Differentes methodes ont ete proposees afin de pouvoir fluidiser et d'ameliorer la qualite de fluidisation des lits de particules cohesives. D'une part, on peut diminuer les forces interparticulaires en additionnant un anti-agglomerant. D'autre part, on peut vaincre ces forces, en faisant appel a une energie supplementaire. Cet apport d'energie peut avoir plusieurs origines: agitation mecanique, vibration ou ultrasons. Dans cette etude, nous presentons les resultats concernant la determination de differentes caracteristiques des poudres utilisees et aussi le comportement en fluidisation sous agitation mecanique des poudres dont la fluidisation naturelle n'est pas possible. Nous avons montre que l'introduction d'une agitation peut modifier l'hydrodynamique du lit. Cette influence est etroitement liee a la cohesion interparticulaire de la poudre etudiee. Nous avons repertorie differents types de comportement selon la poudre. La fluidisation agitee des poudres cohesives nous a montre aussi que la mise en fluidisation du lit est progressive et nous avons discerne differentes regions selon la vitesse d'aeration. Par ailleurs, l'agitation peut-etre caracterisee par les valeurs mesurees du couple resistant qui decrit le meme phenomene hydrodynamique que la perte de charge du lit. La correlation des valeurs experimentales du couple resistant, nous permet d'avoir une representation adimensionnelle independante de la masse du lit considere. Une analyse dimensionnelle de la puissance nous a permis d'acceder a une classification de nos poudres selon une echelle croissante de cohesion. La determination d'une vitesse caracteristique nous a montre qu'il est probable d'etre en presence d'une fluidisation d'agglomerats dont la taille diminue avec une agitation croissante. Une relation similaire a celle en fluidisation naturelle est mise en evidence entre la vitesse caracteristique et le diametre des particules ainis que le taux de fines
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Duru, Paul. "Lois constitutives et instabilités en fluidisation liquide-solide." Aix-Marseille 1, 2001. http://www.theses.fr/2001AIX11029.

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Un lit fluidisé est une suspension de particules soumises à un écoulement de fluide contraire à la gravité. Ce type de système est utilisé dans l'industrie depuis le début du 20ième siècle. Un des problèmes essentiels des lits fluidisés concerne l'écriture des équations de base servant à décrire ce genre de système. Quelques ingrédients essentiels ont été découverts mais la description générale reste un défi. Nous avons entrepris de tester expérimentalement les différents termes du modèle à deux phases qui est utilisé depuis les années 1970. Nous avons examiné expérimentalement l'instabilité en onde plane de concentration qui est la première instabilité qui apparaît en fluidisation liquide-solide. La comparaison entre la forme expérimentale de l'onde et celle issue d'une résolution des équations du modèle à deux phases permet de déterminer les lois constitutives du mátériau fluidisé, viscosité et pression de la phase solide, quantités qui sont indispensables à la fermeture des équations. Un autre problème crucial concerne l'apparition de bulles dans les lits fluidisés gaz-solide. Une bulle est une zone claire de fluide qui se propage dans le lit. L'origine physique de telles structures est encore mal comprise. A l'aide d'un dispositif expérimental inspiré de celui utilisé pour l'étude de l'instabilité en ondes planes, nous avons pu mettre en évidence, pour la première fois expérimentalement, un mécanisme de formation des bulles, suite à l'instabilité secondaire du train d'ondes planes.
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Mullier, Marie Anne. "The strength of agglomerates and their breakage during fluidisation." Thesis, University of Surrey, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293370.

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Books on the topic "Fluidisation"

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Smith, P. G. Applications of fluidisation in food processing. Blackwell Pub., 2007.

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Wong, Yee Sun. Experimental and numerical investigations of fluidisation behaviour with & without the presence of immersed tubes. University of Birmingham, 2003.

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D, Sathiyamoorthy, ed. Fluid bed technology in materials processing. CRC Press, 1999.

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1939-, Yang Wen-ching, ed. Fluidization, solids handling, and processing: Industrial applications. Noyes Publications, 1998.

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How to Optimize Fluid Bed Processing Technology: Part of the Expertise in Pharmaceutical Process Technology Series. Elsevier Science & Technology Books, 2017.

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Parikh, Dilip. How to Optimize Fluid Bed Processing Technology: Part of the Expertise in Pharmaceutical Process Technology Series. Elsevier Science & Technology Books, 2017.

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Handbook of Fluidization and Fluid-Particle Systems. Marcel Dekker, Inc., 2003.

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Gupta, C. K., and D. Sathiyamoorthy. Fluid Bed Technology in Materials Processing. Taylor & Francis Group, 1998.

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Gupta, C. K., and D. Sathiyamoorthy. Fluid Bed Technology in Materials Processing. Taylor & Francis Group, 2019.

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Yang, Wen-Ching. Fluidization, Solids Handling, and Processing: Industrial Applications. Noyes Pubns, 1999.

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Book chapters on the topic "Fluidisation"

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Uhlemann, Hans, and Lothar Mörl. "Wesentliche Aspekte der Fluidisation." In Wirbelschicht-Sprühgranulation. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-57004-9_3.

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Heiden, Bernhard, and Bianca Tonino-Heiden. "Emergence and Solidification-Fluidisation." In Lecture Notes in Networks and Systems. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-82199-9_57.

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Wu, Kaiqiao. "Modelling Dynamically Structured Fluidisation." In Springer Theses. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68752-6_4.

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Foscolo, P. U., L. G. Gibilaro, and R. Di Felice. "Hydrodynamic scaling relationships for fluidisation." In Computational Fluid Dynamics for the Petrochemical Process Industry. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3632-7_5.

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Warr, S., J. M. Huntley, and R. C. Ball. "Fluidisation, Segregation and Stress Propagation in Granular Materials." In Modern Aspects of Colloidal Dispersions. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-6582-2_18.

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Singh, Mandeep, Buddhima Indraratna, Cholachat Rujikiatkamjorn, and Thanh Trung Nguyen. "Subgrade Instability and Stiffness Degradation of Subgrade Soils Prone to Fluidisation." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-8229-1_28.

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Abeywickrama, Thilini Piumali, D. S. Liyanapathirana, William Fuentes, Chin Leo, and Pan Hu. "An Investigation into Subgrade Fluidisation in Transport Infrastructure Under Cyclic Loading." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-8229-1_25.

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Ahmad, Khwaja Izhar, and Akash M. Langde. "A review on the hydro dynamic analysis of fluidisation of nano particles using vibrations." In Recent Advances in Material, Manufacturing, and Machine Learning. CRC Press, 2024. http://dx.doi.org/10.1201/9781003450252-57.

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Okada, Yasuhiko, Ushio Kurokawa, and Shiho Asano. "Examining Fluidisation Mechanisms of Hikagemori Landslide Triggered by Iwate-Miyagi Nairiku Earthquake in 2008 by Laboratory Soil Tests." In Earthquake-Induced Landslides. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32238-9_45.

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Molerus, Otto. "Einfluß der Haftkräfte auf das Fluidisations-verhalten feinkörniger Partikeln in Gas/Feststoff-Wirbelschichten." In Schüttgutmechanik. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-50228-6_15.

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Conference papers on the topic "Fluidisation"

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Karema, Hannu, Juha Salmela, Maarit Tukiainen, and Hannu Lepomäki. "Prediction of Paper Formation by Fluidisation and Reflocculation Experiments." In The Science of Papermaking, edited by C. F. Baker. Fundamental Research Committee (FRC), Manchester, 2001. http://dx.doi.org/10.15376/frc.2001.1.559.

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Reference geometries consisting of a constriction block and a secondary pipe were used to provide reference information for estimation of the performance of more complex geometries resembling to real headbox designs. This information included the fluidisation ability curves, i.e. the minimum attained floc size in function of mechanical energy loss, the rate of fluidisation in sudden expansion, the rate of subsequent reflocculation and the level of saturation floc size. The functionality of this approach was illustrated with measured information of a particular complex geometry on several research environments of different scale. By paper samples produced with a similar geometry, the tight connection of the fluidised state of the suspension and of the attained formation was verified. Reduction of the residence time of suspension in the headbox resulted to lower floc size in slice lip area and to better level of formation in produced paper. In addition, both properties revealed a similar form for this dependency. By changes on tensile strength ratio of the produced paper, the operation of the forming section was shown to have an apparent but not controlling effect on the level of formation obtained.
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de Wet, P. D., B. M. Halvorsen, and J. P. du Plessis. "Powered addition applied to the fluidisation of a packed bed." In MULTIPHASE FLOW 2009. WIT Press, 2009. http://dx.doi.org/10.2495/mpf090371.

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Ojovan, Michael, Guenter Mo¨bus, Jim Tsai, Stuart Cook, and Guang Yang. "On Fluidization of Borosilicate Glasses in Intense Radiation Fields." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16055.

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The viscosity is rate-limiting for many processes in glassy materials such as homogenisation and crystallisation. Changes in the viscous flow behaviour in conditions of long-term irradiation are of particular interest for glassy materials used in nuclear installations as well as for nuclear waste immobilising glasses. We analyse the viscous flow behaviour of oxide amorphous materials in conditions of electron-irradiation using the congruent bond lattice model of oxide materials accounting for the flow-mediating role of broken bonds termed configurons. An explicit equation of viscosity was obtained which is in agreement with experimental data for non-irradiated glasses and shows for irradiated glasses, first, a significant decrease of viscosity, and, second, a stepwise reduction of the activation energy of flow. An equation for glass-transition temperature was derived which shows that irradiated glasses have lower glass transition temperatures. Intensive electron irradiation of glasses causes their fluidisation due to non-thermal bond breaking and can occur below the glass transition temperature. Due to surface tension forces fluidisation of glasses at enough high electron flux densities can result in modification of nano-size volumes and particles such as those experimentally observed under TEM electron beams.
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Scott, A., O. Stanzione, A. Hurst, et al. "Outcrop Characterisation of Turbidite Reservoir Analogues Deformed by Fluidisation - Implications for Reservoir Models." In 70th EAGE Conference and Exhibition - Workshops and Fieldtrips. European Association of Geoscientists & Engineers, 2008. http://dx.doi.org/10.3997/2214-4609.20147571.

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Versteeg, Henk K., and Ricky D. Wildman. "An Optical Method for the Study of Aerosol Generation in Dry Powder Inhalers." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58174.

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Dry powder inhalers (DPIs) are portable, breath-actuated devices used for respiratory drug delivery. They have been the subject of intense research and development activity over the last 15 years, however, no systematic study of the effects of geometry on aerosol generation in DPIs has been reported in the literature. In particular, the first stage process — powder fluidisation — has hardly been studied in the context of DPI applications. The short time scales and the complexities of the air/powder interactions during the conversion of a powder bed into an aerosol present a challenging environment for experimental study. This paper reports an optical technique for the study of powder fluidisation inside a simplified, optically transparent DPI metering chamber geometry. We describe a system based on digital image analysis of high-speed video recordings of the transient powder-airflow interactions. Using diffuse backlighting we have generated black-on-white images of the interaction of frictional, cohesionless particles with an air jet flow. Image-processing techniques were subsequently applied to determine several aspects of the time-dependent properties that describe the development of the bed during the aeration of the powder. The paper concludes by pointing out how the proposed method could be used to improve understanding of the limitations associated with current DPI metering chamber configurations and help forward design of improved DPIs.
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Babitsky, Vladimir, and Vladimir Astashev. "Nonlinear Dynamics and Control of Ultrasonically Assisted Machining." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84304.

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Nonlinear models of cutting process with superposition of ultrasonics are proposed and investigated. It is confirmed that under the influence of high frequency vibration, the phenomenological plasticisation of brittle materials and fluidisation of dry friction occurs. The mechanical characteristics of transformed machining processes are obtained. It is shown that excitation of the high-frequency nonlinear mode of tool-workpiece interaction is the most effective way of ultrasonic influence on dynamic characteristics of machining. The exploitation of this mode needs a new method of nonlinear control called as autoresonant one. An autoresonant system with supervisory computer control was developed and successfully used for the control of the piezoelectric transducer during ultrasonically assisted cutting.
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Reissner, H. K., C. Brunner, and K. Ba¨rnthaler. "TURBOSORP®: Emission Limits After 17th BimSchV (German Federal Immission Act) at Lowest Costs in a Simple Dry Process — Comparison of Dry/Semi Dry Processes and Results of Mercury and Dioxin Separation in a One Step Process." In 11th North American Waste-to-Energy Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/nawtec11-1672.

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The TURBOSORP®-process is a dry flue gas cleaning process to remove certain pollutants like SO2, HCl, Hg, heavy metals, dioxins and furans. The main principle of this process is to bring flue gas in an intensive contact with Ca(OH)2, open hearth furnace coke, water and recirculated material in the Turboreactor. The Turboreactor operates as circulating fluidized bed in the manner of fast fluidisation. The gas/solid mixture leaves the Turboreactor at the top and the solids are separated in a fabric filter from the flue gas. More than 99% of the separated solids are recirculated to the Turboreactor and the rest leaves the process as product. Due to the high sorbent recirculation percentage a high sorbent utilization and low stoechiometric rates are reached in the TURBOSORP®-process. Due to the fact to have plants in operation for the spray absorption and for the TURBOSORP® process, a comparison definitely showed advantages for the TURBOSORP® process. Experiences of the plant start up of a TURBOSORP® plant in Poland concerning optimisation in pressure loss and hydrodynamics of the Turboreactor using CFD-Simulation are presented. Results concerning mercury and dioxin separation in our Turbosorp® pilot plant after the refuse incinerator MV Spittelau, Vienna, are discussed.
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