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Dissertations / Theses on the topic 'Multiphase reactors'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Rode, C. V. "Studies in multiphase reactors." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1990. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3039.

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2

Chaudhari, A. S. "Modeling of multiphase reactors." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2010. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3718.

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3

Bhatelia, Tejas Jagdish. "Novel reactors for multiphase processes." Thesis, Curtin University, 2009. http://hdl.handle.net/20.500.11937/2418.

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Process intensification tools, such as the capillary reactor, offer several benefits to the chemical process industries due to the well-defined high specific interfacial area available for heat and mass transfer, which increases the transfer rates, and due to low inventories, they also enhance the safety of the process. This has provided motivation to investigate three such tools, namely the capillary microreactor, spinning disc and rotating tube reactors, in this study.The gas-liquid slug flow capillary microreactor intensifies reactor performance through internal circulation caused by the sh

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4

Bhatelia, Tejas Jagdish. "Novel reactors for multiphase processes." Curtin University of Technology, Science and Engineering, Department of Chemical Engineering, 2009. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=129027.

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Process intensification tools, such as the capillary reactor, offer several benefits to the chemical process industries due to the well-defined high specific interfacial area available for heat and mass transfer, which increases the transfer rates, and due to low inventories, they also enhance the safety of the process. This has provided motivation to investigate three such tools, namely the capillary microreactor, spinning disc and rotating tube reactors, in this study.<br>The gas-liquid slug flow capillary microreactor intensifies reactor performance through internal circulation caused by th

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5

Martins, Mara Guadalupe Freire. "Aeration and extraction in multiphase biological reactors." Doctoral thesis, Universidade de Aveiro, 2007. http://hdl.handle.net/10773/3191.

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Doutoramento em Engenharia Química<br>Este trabalho tem como principais objectivos o estudo e optimização do arejamento e extracção em reactores biológicos multifásicos. Em bioreactores aeróbios o arejamento pode ser incrementado pela adição de uma segunda fase líquida e imiscível, tais como os fluorocarbonetos. Os perfluorocarbonetos apresentam uma série de propriedades específicas, onde se destacam a sua grande capacidade de dissolução de oxigénio e o facto de serem química e biologicamente inertes. A adição desta segunda fase a sistemas aquosos pode ser efectuada quer pela adição directa de

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6

Sankey, Mark Henry. "Velocity mapping in trickle-bed reactors and multiphase systems using MRI." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611294.

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7

Baten, Jasper Martijn van. "CFD: a design and scale-up tool for multiphase reactors." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/55357.

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8

Briens, Lauren Anne. "Identification of flow regimes in multiphase reactors by time series analysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0018/NQ58396.pdf.

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9

Navarro-Brull, Francisco J. "Modeling, Simulation and Optimization of Multiphase Micropacked-Bed Reactors and Capillary Sonoreactors." Doctoral thesis, Universidad de Alicante, 2018. http://hdl.handle.net/10045/90920.

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In the last decades, miniaturized flow chemistry has promised to bring the benefits of process intensification, continuous manufacturing and greener chemistry to the fine chemical industry. However, miniaturized catalytic processes where gas, liquid, and solids are involved have always been impeded by two main drawbacks: multiphase-flow maldistribution (i.e. gas channeling) and clogging of capillary reactors. In this thesis, first principle models have been used to capture the complexity of multiphase flow in micropacked-bed reactors, which can suffer from poor and unpredictable mass-transfer

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10

Mathew, S. P. "Catalytic hydrogenation of aromatic ketones in multiphase reactors: catalysis and reaction engineering studies." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2001. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2886.

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11

Soncini, Ryan Michael. "Computational Simulation of Coal Gasification in Fluidized Bed Reactors." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/78733.

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The gasification of carbonaceous fuel materials offers significant potential for the production of both energy and chemical products. Advancement of gasification technologies may be expedited through the use of computational fluid dynamics, as virtual reactor design offers a low cost method for system prototyping. To that end, a series of numerical studies were conducted to identify a computational modeling strategy for the simulation of coal gasification in fluidized bed reactors. The efforts set forth by this work first involved the development of a validatable hydrodynamic modeling strategy

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12

Rice, Nicholas Paul. "Investigation of multiphase reactor hydrodynamics using magnetic resonance imaging." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/288824.

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This thesis presents an investigation on multiphase reactor hydrodynamics using magnetic resonance imaging (MRI). The study demonstrates experimental techniques by which computational and quasi-analytical fluid models may be validated. Three types of industrially-important multiphase reaction vessels are considered: a co-current upflow gas-liquid-solid bed, a co-current downward trickle bed (gas, liquid, solid), and a gas-solid fluidised bed. These reactors were selected as they commonly demonstrate local hydrodynamic anisotropy which affects the global performance of industrial units. MRI was

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13

Tarca, Adi-Laurentiu. "Neural networks in multiphase reactors data mining: feature selection, prior knowledge, and model design." Thesis, Université Laval, 2004. http://www.theses.ulaval.ca/2004/21673/21673.pdf.

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Les réseaux de neurones artificiels (RNA) suscitent toujours un vif intérêt dans la plupart des domaines d’ingénierie non seulement pour leur attirante « capacité d’apprentissage » mais aussi pour leur flexibilité et leur bonne performance, par rapport aux approches classiques. Les RNA sont capables «d’approximer» des relations complexes et non linéaires entre un vecteur de variables d’entrées x et une sortie y. Dans le contexte des réacteurs multiphasiques le potentiel des RNA est élevé car la modélisation via la résolution des équations d’écoulement est presque impossible pour les systèmes

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14

Motamed, Dashliborun Amir. "Performance of multiphase packed-bed reactors and scrubbers on offshore floating platforms: hydrodynamics, chemical reaction, CFD modeling and simulation." Doctoral thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/30439.

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Les systèmes flottants de production, stockage et de déchargement (FPSO) ont été introduits dans les secteurs d'exploitation des hydrocarbures offshore en tant qu'outils facilement déplaçables pour l’exploitation de champs de pétrole et de gaz de petites ‘a moyenne tailles ou lorsque ceux-ci sont éloignés des côtes ou en eaux profondes. Ces systèmes sont de plus en plus envisagés pour les opérations de traitement et de raffinage des hydrocarbures à proximité des sites d'extraction des réservoirs sous-marins en utilisant des laveurs et des réacteurs à lit fixe embarqués. De nombreuses études da

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15

Medeiros, de Souza Luís Guilherme [Verfasser], Gábor [Akademischer Betreuer] Janiga, and Andreas [Akademischer Betreuer] Seidel-Morgenstern. "Model optimization and techniques for the simulation of multiphase chemical reactors / Luís Guilherme Medeiros de Souza ; Gábor Janiga, Andreas Seidel-Morgenstern." Magdeburg : Universitätsbibliothek, 2016. http://d-nb.info/1117085910/34.

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16

Al-Herz, Mansour. "Multiphase catalytic reactions in a trickle bed reactor." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3351/.

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Successful transfer of multiphase catalytic reactions from laboratory to commercial scale depends on proper understanding of all the parameters involved. This thesis aims to further understand these aspects with regards to trickle beds. A detailed discussion of reaction kinetics, hydrodynamics and mass transfer is presented for three industrially important reactions. The catalytic hydrogenation of dimethyl itaconate was studied in lab-scale shake flask and transferred to continuous flow with recirculation in a trickle bed reactor (TBR). The TBR was operated in the trickle flow regime using the

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17

Toupoint, Clément. "Path and wake of cylinders falling in a liquid at rest or in a bubble swarm towards the hydrodynamical modeling of ebullated bed reactors." Thesis, Toulouse, INPT, 2018. http://oatao.univ-toulouse.fr/24120/1/Clement_Toupoint.pdf.

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The origin of this PhD thesis lies in the study of Ebullated Bed Reactors (EBRs). These chemical reactors are very active research topics in chemical processes, notably thanks to their usage in heavy oil processing. Many complex phenomena take place within EBRs, and make their design and optimization difficult. In fluid mechanics, a lot of physical mechanisms present in EBRs are active fields of study (three-phase flow, fluid-body interaction...). Hence, in the present work, a study of the mechanisms participating in the hydrodynamics of an EBR with cylindrical catalysts is performed. In a fir

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18

Schneider, Clemens. "Experimentelle Untersuchungen zum Blasensieden bei unterkühlten Strömungen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-185332.

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Die vorliegende Dissertationsschrift beinhaltet die Ergebnisse der Untersuchung von loka-len und globalen Prozessen der Wärmeübertragung beim unterkühlten Strömungssieden. Sie ist an der Schnittstelle zwischen Reaktorsicherheitsforschung und der experimentellen Thermofluiddynamik für Phasenübergänge einzuordnen. In technischen Anwendungen zur effizienten Übertragung großer Wärmemengen spielt der Prozess des Siedens eine wichtige Rolle. Dieser Vorgang bewirkt einen starken Anstieg des Wärmetransportes von der beizten Wand an das Fluid bei vergleichsweise geringem Anstieg der Wandtemperatur. D

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19

Àlvarez, Castro Helver Crispiniano 1984. "Análise de variáveis de processo via CFD visando aperfeiçoamento de performance em riser de FCC." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266067.

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Orientador: Milton Mori<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-26T06:44:29Z (GMT). No. of bitstreams: 1 AlvarezCastro_HelverCrispiniano_D.pdf: 5280150 bytes, checksum: 96fb29e2849d11c06890186cb8af2f51 (MD5) Previous issue date: 2014<br>Resumo: Conversão de matéria-prima e rendimento são estudados através de um modelo 3D que simula o principal reator do processo de craqueamento catalítico fluidizado (FCC). Fluidodinâmica computacional (CFD) é usada como técnica com abordagem Euleriana-Euleriana para preve

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20

Gholap, R. V. "Studies in multiphase reactions." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1988. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3318.

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21

Mehta, U. L. "Synthesis and optimisation multiphase reactor networks." Thesis, University of Manchester, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504689.

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22

Rosa, Leonardo Machado da. "Aplicação de tecnicas CFD para o calculo de escoamento em meio reativo em riser." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266216.

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Orientador: Milton Mori<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-10T23:15:40Z (GMT). No. of bitstreams: 1 Rosa_LeonardoMachadoda_D.pdf: 1367270 bytes, checksum: 1819e68c66a949c1c8fae024725df552 (MD5) Previous issue date: 2008<br>Resumo: A aplicação de Fluidodinâmica Computacional (CFD) em operações industriais vem aumentando sensivelmente, em razão desta auxiliar no projeto de novos equipamentos, bem como a otimização dos já existentes. O presente trabalho apresenta uma série de simulações tridimensionais,

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23

Tomaszewski, Bartlomiej [Verfasser]. "Selective redox biocatalysis in multiphasic enzyme reactors / Bartlomiej Tomaszewski." Aachen : Shaker, 2015. http://d-nb.info/1066197881/34.

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24

Goraki, Fard Mojtaba. "CFD Modeling of Multiphase Turbulent Flows in a Bubble Column Reactor." Doctoral thesis, Universitat Rovira i Virgili, 2020. http://hdl.handle.net/10803/670965.

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Aquest treball presenta l'estudi numèric de fluxos turbulents bifàssics en un reactor de columna de bombolles en 3D utilitzant diferents models a diferents escales. En primer lloc se centra en la hidrodinàmica, las transicions del règim de flux i la transferència de massa utilitzant el model de barreja Euler-Euler k-ε per amplis rangs de velocitats superficials de gas. S'ha posat èmfasi en avaluar el rendiment d'aquest model i l'anàlisi de les transicions del règim de flux i el comportament del flux transitori dins del reactor de columna de bombolles. Es presenta la quantificació de les forces

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25

Roy, D. "Studies in catalysis and reaction engineering on multiphase hydrogenation reactions." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2006. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2505.

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26

Dong, Jie. "Modelling of multiphase flow containing ionic liquids in a stirred tank reactor." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/46880/.

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Stirred tanks are widely used in the chemical reactions and the mixing operations for process industries to enable high product quality and process efficiency. Despite there being a large body of studies on the hydrodynamics of water in the stirred tanks, the understandings of the hydrodynamics of the ionic liquids in the stirred tanks are still very limited. In this study, Computational Fluid Dynamics (CFD) modelling is used to investigate the detailed flow characteristics of the single and multiphase ionic liquid flows in the stirred tanks which are experimentally validated using Particle Im

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27

Rajurkar, K. B. "Studies in catalysis and reaction engineering aspects of multiphase catalytic reactions." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2008. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2704.

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28

Yang, Li. "CFD MODELING OF MULTIPHASE COUNTER-CURRENT FLOW IN PACKED BED REACTOR FOR CARBON CAPTURE." UKnowledge, 2015. http://uknowledge.uky.edu/me_etds/59.

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Packed bed reactors with counter-current, gas-liquid flows have been considered to be applicable in CO2 capture systems for post-combustion processing from fossil-fueled power production units. However, the hydrodynamics within the packing used in these reactors under counter-current flow has not been assessed to provide insight into design and operational parameters that may impact reactor and reaction efficiencies. Hence, experimental testing of a laboratory-scale spherical ball, packed bed with two-phase flow was accomplished and then a meso-scale 3D CFD model was developed to numerically s

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29

Cichowski, Dawid [Verfasser], Peter [Akademischer Betreuer] Woias, and Ingo [Akademischer Betreuer] Krossing. "Rapid fabrication methods and modular packaging of chip-based microreactors for harsh multiphase reactions." Freiburg : Universität, 2017. http://d-nb.info/116814566X/34.

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30

Kaiser, Nicolas Maximilian [Verfasser], and Kai [Gutachter] Sundmacher. "Dynamic optimization based reactor synthesis and design under uncertainty for liquid multiphase processes / Nicolas Maximilian Kaiser ; Gutachter: Kai Sundmacher." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2019. http://d-nb.info/121993738X/34.

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31

Kaiser, Nicolas Maximilian Verfasser], and Kai [Gutachter] [Sundmacher. "Dynamic optimization based reactor synthesis and design under uncertainty for liquid multiphase processes / Nicolas Maximilian Kaiser ; Gutachter: Kai Sundmacher." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2019. http://d-nb.info/121993738X/34.

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32

LIMA, Maria Gorethe de Sousa. "Estudo teórico e experimental de um reator anaeróbio de fluxo ascendente e manta de lodo tratando águas residuárias domésticas." Universidade Federal de Campina Grande, 2008. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1909.

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Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-10-05T16:36:00Z No. of bitstreams: 1 MARIA GORETHE DE SOUSA LIMA - TESE (PPGEP) 2008.pdf: 5258111 bytes, checksum: afc624a7c316b024f1b9064cef933c81 (MD5)<br>Made available in DSpace on 2018-10-05T16:36:00Z (GMT). No. of bitstreams: 1 MARIA GORETHE DE SOUSA LIMA - TESE (PPGEP) 2008.pdf: 5258111 bytes, checksum: afc624a7c316b024f1b9064cef933c81 (MD5) Previous issue date: 2008-05-29<br>CNPq<br>O trabalho de tese em questão teve por objetivo geral realizar um estudo teórico/experimental para avaliar a fluidodinâmica de um reator anae

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33

Barbosa, Ariane Corrêa. "Simulação de Reações de craqueamento catalítico e térmico em riser industrial." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266838.

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Orientador: Milton Mori<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-19T22:56:51Z (GMT). No. of bitstreams: 1 Barbosa_ArianeCorrea_M.pdf: 3646143 bytes, checksum: 81967e15123849d7596f2ba40c6b2c68 (MD5) Previous issue date: 2012<br>Resumo: O comportamento dinâmico de um reator industrial de FCC (Craqueamento Catalítico Fluidizado) foi simulado utilizando modelos de escoamento gás-solido tridimensionais e aplicando o modelo cinético de 10-lumps desenvolvido por JACOB et al. (1976). O comportamento uidodinâ

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34

Berkemeier, Thomas [Verfasser]. "Multiphase kinetics of molecular diffusion, phase transitions and chemical reactions in liquid, semi-solid and glassy organic aerosols / Thomas Berkemeier." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/110977527X/34.

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35

Pourian, Bijan. "ANALYZING THE HYDRO DYNAMICS AND THE CHEMICAL REACTIONS IN PULP DIGESTER SYSTEMS USING CFD MODELLING." Doctoral thesis, Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-6652.

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The aim of this thesis is to use differential analysis and finite volume method (FVM) to model and analyze a continuous pulp digester in order to create a detailed picture of the flow behaviour and chemical reactions in the digester. This information will be used to optimize wood chip flow and reactions and to diagnose and avoid faults such as hang-ups and channelling. As digesters increase in size, the importance of control of the liquor flow in the wood chip bed also increases. Pulping reactors are often faced with production disturbances that cause reduced fibre quality, non-uniform chemica

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36

Unadkat, Heema. "Investigation of turbulence modulation in solid-liquid suspensions using FPIV and micromixing experiments." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6377.

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The focus of this thesis is the study of turbulent solid-liquid stirred suspensions, which are involved in many common unit operations in the chemical, pharmaceutical and food industries. The studies of two-phase flows present a big challenge to researchers due to the complexity of experiments; hence there is a lack of quantitative solid and liquid hydrodynamic measurements. Therefore, an investigation of turbulence modulation by dispersed particles on the surrounding fluid in stirred vessels has been carried out, via two-phase fluorescent Particle Image Velocimetry (FPIV) and micromixing expe

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Brunner, Fabian Verfasser], and Peter [Akademischer Betreuer] [Knabner. "Multiphase multicomponent flow in porous media with general reactions: efficient problem formulations, conservative discretizations, and convergence analysis / Fabian Brunner. Gutachter: Peter Knabner." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2016. http://d-nb.info/1081544104/34.

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Meignen, Renaud. "Modélisation de la fragmentation d'un jet liquide à très haute température dans un liquide froid volatil." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0181.

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Dans l'industrie nucleaire, la sequence accidentelle la plus grave prevoit dans une de ses phases, la coulee du cur en fusion (temperature de l'ordre de 3000 k) en jets d'un diametre d'une dizaine de centimetres, dans l'eau presente en fond de cuve. Les conditions de destabilisation puis de fragmentation du jet sont l'objet de cette etude. Tres peu d'experiences relatives a ce probleme ont ete realisees, du fait des conditions extremes, et de l'eventualite d'explosion de vapeur. A l'issue d'une etude bibliographique approfondie, trois points importants sont a modeliser: la structure du film va

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Lopes, Gabriela Cantarelli. "Estudo computacional da dinâmica do escoamento reativo em risers industriais de FCC." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266768.

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Orientadores: José Roberto Nunhez, Milton Mori<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-19T13:23:00Z (GMT). No. of bitstreams: 1 Lopes_GabrielaCantarelli_D.pdf: 8625905 bytes, checksum: 794a296fe54b1d50d16cf187c232a454 (MD5) Previous issue date: 2012<br>Resumo: O craqueamento catalítico fluido (FCC) é um dos processos de maior importância da indústria do refino de petróleo, já que converte as frações pesadas de baixo valor comercial provenientes de outros processos de refino, em produtos comercialmente mai

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Bibouche, Bachir [Verfasser], Dieter [Akademischer Betreuer] Vogt, Reinhard [Akademischer Betreuer] Schomäcker, Dieter [Gutachter] Vogt, Reinhard [Gutachter] Schomäcker, and Paul [Gutachter] Kamer. "Catalytic hydroformylation reactions in liquid-liquid multiphase systems with polymer particles and without phase transfer agents / Bachir Bibouche ; Gutachter: Dieter Vogt, Reinhard Schomäcker, Paul Kamer ; Dieter Vogt, Reinhard Schomäcker." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1200467051/34.

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41

Khawaja, Danial. "Modeling and optimisation of a rotary kiln reactor for the processing of battery materials." Thesis, KTH, Kemiteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302460.

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Roterugnar är cylindriska kärl som används för att höja materials temperaturer i en kontinuerlig process som kallas för kalcinering. Roterugnar kan tillämpas i olika processer såsom reduktion av oxidmalm samt återvinning av farligt avfall. Fördelen med roterugnar ligger i dess förmåga att hantera råmaterial som sträcker sig från slam till granulära material med en mängd olika partikelstorlekar, och därigenom upprätthålla distinkta miljöer såsom en bädd av fasta partiklar som samexisterar med ett oxiderande fribord. Sex olika bäddbeteende har dokumenterats med avseende på fyllningsgrad samt Fro

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42

Liu, Qi. "CIRCE a new software to predict the steady state equilibrium of chemical reactions." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2455/document.

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L'objectif de cette thèse est de développer un nouveau code pour prédire l'équilibre final d'un processus chimique complexe impliquant beaucoup de produits, plusieurs phases et plusieurs processus chimiques. Des méthodes numériques ont été développées au cours des dernières décennies pour prédire les équilibres chimiques finaux en utilisant le principe de minimisation de l'enthalpie libre du système. La plupart des méthodes utilisent la méthode des « multiplicateurs de Lagrange » et résolvent les équations en employant une approximation du problème de Lagrange et en utilisant un algorithme de

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Schulz, Michelle Renae. "The influence of job type, information provided, test type, and test performance on applicant reactions to personnel selection tests." CSUSB ScholarWorks, 2001. https://scholarworks.lib.csusb.edu/etd-project/2028.

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The evolution of the Systems Model approach to personnel selection marks the emergence of the relationship between the organization and the applicant. It has made organizations become increasingly aware of the potential influence of applicant reactions to selection procedures.

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Mouly, Aude. "Modélisation de la formation et de la détente rapide d'une bulle polyphasique pour l'évaluation des conséquences d'un accident grave de RNR_Na." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0362.

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Une nouvelle génération de réacteurs est aujourd'hui développée pour répondre aux enjeux économiques, environnementaux et sociétaux du 21e siècle. Parmi les différents concepts retenus pour créer cette quatrième génération, les réacteurs à neutrons rapides à caloporteur sodium (RNR-Na) sont étudiés dans le cadre de cette thèse. Ce sont les seuls réacteurs de quatrième génération présentant déjà un retour d'expérience considérable en France. Afin de répondre aux objectifs de sûreté de cette nouvelle génération, la démarche d'étude de sûreté doit être adaptée dès les phases de préconception et d

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Naderifar, Abbas. "Étude expérimentale locale et globale du transfert de matière liquide/solide à la paroi d'un réacteur à lit fixe." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL149N.

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Le présent travail concerne une étude expérimentale de l'hydrodynamique et du transfert de matière liquide/solide à la paroi d'un réacteur à lit fixe par deux approches complémentaires: l'approche globale à l'échelle macroscopique et l'approche locale à l'échelle microscopique. La méthode polarographique, fondée sur la mesure du courant limite de diffusion d'une substance électroactive présente en faible quantité au sein de la solution liquide, a été utilisée. Deux configurations d'écoulement ont été considérées: l'écoulement monophasique du liquide et l'écoulement gaz/liquide à co-courant ver

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Kundu, Arunabha. "Studies in multiphase reactors." Thesis, 2003. http://localhost:8080/xmlui/handle/12345678/3368.

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Upadhyay, Rajesh Kumar. "Investigation of multiphase reactors using radioactive particle tracking." Thesis, 2010. http://localhost:8080/xmlui/handle/12345678/3409.

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Wang, Bo. "Transport phenomena in high-temperature multiphase-flow solar thermochemical reactors." Phd thesis, 2022. http://hdl.handle.net/1885/258168.

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High-temperature solar thermochemical technologies utilise the entire spectrum of solar radiation to drive endothermic chemical reactions, promising an energy-efficient and environment-friendly pathway to a wide variety of industrial processes. In these solar thermochemical processes, chemically reactive and radiatively participating multiphase flows in various regimes are frequently encountered. Numerical modelling of multiphase flows assists the design and optimisation of solar thermochemical systems by reducing the need for costly and time-consuming experimental testing. However, the comple

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Macchi, Arturo. "Dimensionless hydrodynamic simulation of high pressure multiphase reactors subject to foaming." Thesis, 2002. http://hdl.handle.net/2429/13086.

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Safoniuk (1999) proposed that three-phase fluidized bed hydrodynamics can be scaled based on geometric similarity and matching of five dimensionless groups: the M-group, M = g(p[sub L]-P[sub g])μ[sub L]⁴/(p[sub L]²σ³); a modified Eotvos number, Eo* = g(p[sub L] – p[sub g])d[sub p]²/σ; the liquid Reynolds number, Re[sub L] = P[sub L]d[sub p]U[sub L]/μ[sub L]; a density ratio, P[sub P]/P[sub L] ; and a superficial velocity ratio, Ug/UL- This approach implicitly assumes that the major physical properties of the liquid (density, viscosity and surface tension) are sufficient to characterize the

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Van, der Merwe Werner. "The Morphology of trickle flow liquid holdup." 2004. http://upetd.up.ac.za/thesis/available/etd-02162005-085324/.

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