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Dissertations / Theses on the topic 'Porous tubes'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Radulescu, Matei Ioan. "The propagation and failure mechanism of gaseous detonations : experiments in porous-walled tubes." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84420.

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In order to elucidate the propagation mechanism of detonations, the failure mechanism of detonations propagating in tubes with porous walls is investigated experimentally. Two distinct failure mechanisms were identified depending on the type of detonating mixture. Experiments in mixtures characterized by piecewise laminar reaction zone structures with weak three-dimensional effects revealed that the attenuation and failure is caused by the global mass divergence to the porous, permeable walls. The limits observed in these mixtures agreed very well with the theoretical limiting condition

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2

Delcolle, Roberta. "Desemulsificação de emulsões estáveis de água e óleo de girassol por processo de filtração tangencial." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-21022006-131152/.

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O processo estudado utilizou tubos cerâmicos porosos fabricados predominantemente com alumina e produzidos pela técnica da colagem de barbotina e sinterizados a temperaturas próximas a 1450 graus Celsius, para seleção de uma temperatura. O meio micro poroso foi caracterizado pela técnica de porosimetria por intrusão de mercúrio, apresentando tamanho médio de poro de 0,5 'mü'm. Os tubos foram submetidos à impregnação com solução de citrato de zircônio (precursor) por capilaridade. Posteriormente, os tubos foram calcinados e tratados termicamente até 600 e 900 graus Celsius, com o objetivo de el

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3

Faria, Cyro Rovath de. "Processing of short fiber reinforced porous CMC and MMC tubes by powder thermoplastic extrusion." Florianópolis, SC, 2011. http://repositorio.ufsc.br/xmlui/handle/123456789/95168.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2011<br>Made available in DSpace on 2012-10-25T21:36:28Z (GMT). No. of bitstreams: 1 291138.pdf: 5574443 bytes, checksum: d9a4665c93906c67fe4ca08b67cb339f (MD5)<br>Materiais com poros interconectados são comumente usados em diversas aplicações de filtragem, como, por exemplo, purificação de água, filtração de metais fundidos e filtração de gases quentes. Se por um lado, os filtros devem conter uma estrutura de elevada porosidade abe

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Ramalingam, Ammaiyappan Arul Kumaran. "Design and Development of a High Swirl Burner with Gaseous Fuel Injection through Porous Tubes." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511795499271833.

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5

Wang, Ji. "Hierarchical Assembly of Polymeric Nanofibers for Advanced Material Applications." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/72958.

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Polymer nanofibers are gaining importance due to their wide applicability in diverse fields, such as tissue engineering, fuel cells, photonics and sensors. For these applications, manufacturing aligned polymer nanofibers with precisely controlled morphology and well characterized mechanical properties in a bottom up configuration is essential. In this work, we developed an isodiametric design space for fabrication of aligned polystyrene nanofibers (diameter 60-800nm) using non-electrospinning Spinneret based Tunable Engineered Parameter (STEP) technique. By adjusting the processing parameters

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6

Khokhar, Rahim Bux. "Numerical modelling of mixing and separating of fluid flows through porous media." Thesis, University of Hertfordshire, 2017. http://hdl.handle.net/2299/19707.

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In present finite element study, the dynamics of incompressible isothermal flows of Newtonian and two generalised non-Newtonian models through complex mixing-separating planar channel and circular pipe filled with and without porous media, including Darcy's term in momentum equation, is presented. Whilst, in literature this problem is solved only for planar channel flows of Newtonian and viscoelastic fluids. The primary aim of this study is to examine the laminar flow behaviour of Newtonian and inelastic non-Newtonian fluids, and investigate the robustness of the numerical algorithm. The rheol

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7

Heidarpour, Manouchehr. "Turbulent flow in a porous tube with wall suction." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq28345.pdf.

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8

Meles, Aaron Robert. "Development of a Predictive Model for Bulk-Flow Through A Porous Polymer Membrane Tube." UNF Digital Commons, 2012. http://digitalcommons.unf.edu/etd/406.

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While extensive mathematical and numerical work has been done in terms of modeling the mainstream flow in a tube with porous walls, very little has been done experimentally to confirm these various solutions, and what has been done has focused on large sintered metal tubes used in nuclear power applications. Furthermore, these solutions are quite mathematically complex and arduous to implement. In this work, the mainstream flow through a porous polymer membrane tube is examined and a method for calculating the through-membrane flow rate and axial pressure drop is presented. Two membrane tubes

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9

McLurgh, David Brian. "Study of a porous tube reactor for the wet air oxidation of aqueous wastes." Thesis, University of Bath, 1997. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242783.

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10

Clearman, William M. "Measurement and correlation of directional permeability and Forchheimer's inertial coefficient of micro porous structures used in pulse tube cryocoolers." Thesis, Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-07092007-111541/.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2008.<br>Kirkconnell, Carl S., Committee Member ; Ghiaasiaan, S. Mostafa, Committee Chair ; Desai, Prateen V., Committee Member ; Jeter, Sheldon M., Committee Member.

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11

Ahlinder, Stefan. "On modelling of compact tube bundle heat exchangers as porous media for recuperated gas turbine engine applications." [S.l.] : [s.n.], 2006. http://se6.kobv.de:8000/btu/volltexte/2006/15.

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12

Liang, Huayan. "Evaporation Enhancement for Condensational Nanoparticle Growth in Hydrophobic Evaporation - Condensation Tube." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1407407189.

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13

Nirmalanandhan, Victor S. "Heat transfer augmentationfor external ice-on-tube TES systems using porous copper mesh to increase volumetric ice production." Cincinnati, Ohio : University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1100796827.

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NIRMALANANDHAN, VICTOR SANJIT. "HEAT TRANSFER AUGMENTATION FOR EXTERNAL ICE-ON-TUBE TES SYSTEMS USING POROUS COPPER MESH TO INCREASE VOLUMETRIC ICE PRODUCTION." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1100796827.

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15

Pilon, Dominic. "Influence des conditions aux limites sur les mesures acoustiques au tube à ondes stationnaires." Sherbrooke : Université de Sherbrooke, 2002.

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16

Ahlinder, Stefan [Verfasser]. "On Modelling of Compact Tube Bundle Heat Exchangers as Porous Media for Recuperated Gas Turbine Engine Applications / Stefan Ahlinder." Aachen : Shaker, 2006. http://d-nb.info/1170538037/34.

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17

Ferreira, Marcelo Evaristo. "Modelagem matemática do escoamento laminar em tubo permeável aplicada a microfiltração de suspensões." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-01022016-153053/.

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Esta dissertação apresenta uma modelagem matemática do escoamento laminar em tubos de paredes permeáveis aplicada à micro-filtração de suspensões. A modelagem utilizou-se da formulação integral das equações de conservação e de funções pré- estabelecidas para o representar os campos de velocidade e de concentração ao longo do tubo permeável. As equações integrais da quantidade de movimento e da conservação das espécies químicas forneceram duas equações diferenciais ordinárias de primeira ordem para as variáveis funcionais \"n (z)\" e \"m (z)\" presentes nas funções pré-estabelecidas. Para

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18

Dillon, Chad Michael. "Two-Phase Flow Within Narrow Annuli." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5097.

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A study of two-phase flow in annular channels with annular gaps of less than 1 mm is useful for the design and safety analysis of high power density systems such as accelerator targets and nuclear reactor cores. Though much work has been done on pressure drop in two-phase flow, designers rely mostly on empirical models and correlations; hence, it is valuable to study their applicability for different channel sizes, geometries, and gas qualities. The pressure drop along a concentric annular test section was measured for cases of either constant quality or variable quality along its length (

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19

Pathak, Mihir Gaurang. "Periodic flow physics in porous media of regenerative cryocoolers." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49056.

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Pulse tube cryocoolers (PTC) are a class of rugged and high-endurance refrigeration systems that operate without moving parts at their low temperature ends, and are capable of reaching temperatures down to and below 123 K. PTCs are particularly suitable for applications in space, guiding systems, cryosurgery, medicine preservation, superconducting electronics, magnetic resonance imaging, weather observation, and liquefaction of gases. Applications of these cryocoolers span across many industries including defense, aerospace, biomedical, energy, and high tech. Among the challenges facing the PT

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Armengol, Jan Mateu 1988. "Estudo numérico de crescimento de gelo poroso entre placas planas paralelas." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265814.

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Orientador: Carlos Teofilo Salinas Sedano<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-27T04:21:17Z (GMT). No. of bitstreams: 1 Armengol_JanMateu_M.pdf: 6999606 bytes, checksum: e35806586b55eb3f8f1b370625009ba8 (MD5) Previous issue date: 2015<br>Resumo: Neste trabalho é apresentado um modelo para a formação de gelo poroso entre placas planas paralelas baseado em um novo tratamento bidimensional da taxa de crescimento. O modelo considera as equações de transporte de quantidade de movimento, energia e mas

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Florez, Mera Juan Pablo. "Análise da transferência de calor em meios de porosidade variável para tubos de calor." Florianópolis, SC, 2011. http://repositorio.ufsc.br/xmlui/handle/123456789/96003.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica.<br>Made available in DSpace on 2012-10-26T07:54:35Z (GMT). No. of bitstreams: 1 300769.pdf: 5134184 bytes, checksum: b94fd58b5f1a9087ed5ef874ccb34330 (MD5)<br>Atualmente os tubos de calor são utilizados na refrigeração de processadores de computadores portáteis e de equipamentos eletrônicos em aplicações espaciais. O principal objetivo deste trabalho é aplicar uma nova tecnologia de meios de porosidade variável em tubos de calor, visando melhorar a sua eficiênc

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22

Cha, Jeesung Jeff. "Hydrodynamic Parameters of Micro Porous Media for Steady and Oscillatory Flow: Application to Cryocooler Regenerators." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-07092007-194225/.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2008.<br>Jeremy P. Harvey, Committee Member ; Carl S. Kirkconnell, Committee Member ; Kurt D. Pennell, Committee Member ; S. Mostafa Ghiaasiaan, Committee Chair ; Prateen V. Desai, Committee Member ; Sheldon M. Jeter, Committee Member.

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Paiva, Kleber Vieira de. "Desenvolvimento de novas tecnologias para minitubos de calor." Florianópolis, SC, 2011. http://repositorio.ufsc.br/xmlui/handle/123456789/95088.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica.<br>Made available in DSpace on 2012-10-25T20:29:29Z (GMT). No. of bitstreams: 1 299826.pdf: 6542938 bytes, checksum: f8a6d2fb1008159f59b51920915459c2 (MD5)<br>Neste trabalho propõe-se o estudo experimental e teórico de minitubos de calor híbridos, fabricados a partir da combinação de dois tipos de estruturas capilares: as ranhuras do tipo fios e placas, onde fios de cobre roliços são soldados por difusão a placas planas de cobre, e a tecnologia de meio poroso, onde p

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Pozzobon, João Carlos. "Recuperação de água em torres de resfriamento por meio de estruturas de condensação porosas." reponame:Repositório Institucional da UFSC, 2015. https://repositorio.ufsc.br/xmlui/handle/123456789/133093.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2015<br>Made available in DSpace on 2015-05-26T04:09:19Z (GMT). No. of bitstreams: 1 333639.pdf: 3849323 bytes, checksum: c94d21a2a71f465a1bcd59f4c13d69c1 (MD5) Previous issue date: 2015<br>Torres de resfriamento são empregadas para o resfriamento de água utilizada em processos industriais. Neste procedimento, cerca de 2 a 3% do volume da água resfriada é expelida para o ambiente em uma mistura de vapor saturado e ar. Este volume de água pode s

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Saraiva, Luis Edson. "Simulação numerica para analise local e global do desempenho de tubos de calor rotativos com estrutura porosa." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263792.

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Orientador: Kamal Abdel Radi Ismail<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-04T02:30:57Z (GMT). No. of bitstreams: 1 Saraiva_LuisEdson_D.pdf: 6806065 bytes, checksum: ae5ac00eb10f795ccdf8bffcd15232bc (MD5) Previous issue date: 2004<br>Resumo: Neste trabalho o funcionamento de um tubo de calor com rotação em tomo de seu eixo axial, internamente cilíndrico e provido de estrutura porosa para o retomo do líquido, é simulado numericamente. As equações governantes para os escoamentos do líquido e do vapor são

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Chedly, Slaheddine. "Compromis choc acoustique des matériaux poreux : relations procédé – produit - performances." Reims, 2008. http://theses.univ-reims.fr/exl-doc/GED00000856.pdf.

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Dans le secteur automobile, la sécurité prend de l’ampleur depuis quelques années et les constructeurs automobiles s’investissent dans le développement des nouvelles technologies pour que leurs produits soient plus sûrs aux passagers. Dans le contexte normatif actuel concernant à la fois le choc piéton et le bruit des véhicules, la sélection de matériaux offrant un bon compromis entre ces deux aspects pour la conception des capots est au cœur des préoccupations des constructeurs automobiles. Une voie possible est l'utilisation de matériaux poroélastiques collés sous le capot moteur, qui offren

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Morelon, Isabelle. "Dispersion d'une solution micellaire de tensio-actif au cours de sa migration en milieu poreux." Rueil-Malmaison : Paris : Institut français du pétrole ; diffusion Technip, 1986. http://catalogue.bnf.fr/ark:/12148/cb34874099m.

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Salissou, Yacoubou. "Caractérisation des propriétés acoustiques des matériaux poreux à cellules ouvertes et à matrice rigide ou souple." Thèse, Université de Sherbrooke, 2009. http://savoirs.usherbrooke.ca/handle/11143/1916.

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L'objectif global visé par les travaux de cette thèse est d'améliorer la caractérisation des propriétés macroscopiques des matériaux poreux à structure rigide ou souple par des approches inverses et indirectes basées sur des mesures acoustiques faites en tube d'impédance. La précision des approches inverses et indirectes utilisées aujourd'hui est principalement limitée par la qualité des mesures acoustiques obtenues en tube d'impédance. En conséquence, cette thèse se penche sur quatre problèmes qui aideront à l'atteinte de l'objectif global précité. Le premier problème porte sur une caractéris

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Gouverneur, Catherine. "Étude expérimentale du champ hydrodynamique dans un tube poreux avec transfert de masse pariétal : application à la production d'eau potable par ultrafiltration tangentielle dans les fibres creuses." Toulouse, INPT, 1991. http://www.theses.fr/1991INPT026H.

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Afin d'analyser et de prevenir le colmatage des fibres creuses pendant la phase de production d'eau potable par ultrafiltration tangentielle, il est necessaire de caracteriser le champ hydrodynamique se developpant a l'interieur de ces milieux filtrants. Le probleme est modelise par l'ecoulement laminaire et stationnaire d'un fluide newtonien incompressible dans un tube poreux avec transfert de masse parietal (aspiration ou injection). Nous avons realise une installation experimentale a l'ehelle macroscopique basee sur l'utilisation d'un tube poreux dans lequel l'ecoulement verifie la similitu

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Gineau, Audrey Nathalie. "Modélisation multi-échelle de l'interaction fluide-structure dans les systèmes tubulaires." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066651/document.

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Cette thèse a pour objectif de modéliser le couplage fluide-structure pouvant survenir dans les faisceaux tubulaires des réacteurs nucléaires. Leurs simulations numériques directes étant hors de portée, on met en œuvre une approche multi-échelle: il s'agit de tirer profit du coût modeste d'une description macroscopique, et à la fois, de la précision des informations microscopiques. Vis-à-vis des modèles existants, le travail de développement se focalise sur la prise en compte de la convection dans le calcul des champs hydrodynamiques, mais surtout, sur la possibilité de restituer des réponses

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Thomys, Oliver. "Asymptotic Behaviour of Capillary Problems governed by Disjoining Pressure Potentials." Doctoral thesis, Universitätsbibliothek Leipzig, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:15-20100412-072001-8.

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Nemati, Navid. "Theorie macroscopique de propagation du son dans les milieux poreux 'à structure rigide permettant la dispersion spatiale: principe et validation." Phd thesis, Université du Maine, 2012. http://tel.archives-ouvertes.fr/tel-00848603.

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Ce travail présente et valide une théorie nonlocale nouvelle et généralisée, de la propagation acoustique dans les milieux poreux à structure rigide, saturés par un fluide viscothermique. Cette théorie linéaire permet de dépasser les limites de la théorie classique basée sur la théorie de l'homogénéisation. Elle prend en compte non seulement les phénomènes de dispersion temporelle, mais aussi ceux de dispersion spatiale. Dans le cadre de la nouvelle approche, une nouvelle procédure d'homogénéisation est proposée, qui permet de trouver les propriétés acoustiques à l'échelle macroscopique, en ré

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Pinto, Flávio Miguel do Carmo. "Alternativas aos antibióticos químicos convencionais: estado-da-arte." Master's thesis, [s.n.], 2013. http://hdl.handle.net/10284/3984.

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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Ciências Farmacêuticas<br>Com a fácil transferência das bactérias quer nos cuidados hospitalares, quer a nível comunitário, com o aumento do número de pessoas a necessitar de cuidados de saúde provocado pelo envelhecimento populacional, com o aumento do número de infeções associadas aos cuidados de saúde, com as viagens internacionais ao dispor de qualquer cidadão, com o uso irracional e exagerado dos antibióticos por parte da população e em explorações a

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Dupont, Thomas. "Transparence et absorption acoustiques des structures microperforées." Phd thesis, INSA de Lyon, 2002. http://tel.archives-ouvertes.fr/tel-00468475.

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Nous présentons la théorie de base des plaques microperforées (MPP) fines. Nous la comparons avec des mesures. Nous l'intégrons dans un modèle analytique de transparence appliqué à un système basique de plaques infinies : MPP couplée par une cavité d'air à une plaque flexible. Nous étudions l'influence que peut avoir l'ajout d'une MPP sur les propriétés de transparence de plaques. La comparaison avec des mesures de transparence et d'absorption faites en champ diffus valide le modèle. Il est ensuite intégré à des systèmes plus complexes permettant l'optimisation de leur acoustique. Ne voulant p

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Wen-Wei-Kao and 高文為. "A New Leak Detection System for Pipelines Utilizing Horizontal Porous Tubes." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/6uxj4a.

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碩士<br>國立成功大學<br>資源工程學系<br>104<br>This paper presents the results of laboratory tests using an innovative leak-detection system for a long-distance pipeline utilizing soil-gas techniques. Based on the laboratory observations, the effective detection distance of the new system is at least 30 meters and 20 meters for gasoline and diesel, respectively. Because the effective detection radius from the conventional soil-gas probes is only around 5 meters, applying the new detection system to a long-distance pipeline for leak detection minimizes the large number of soil-gas samples and analyses whic

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Wei-ChenChen and 陳威臣. "A New Leak Detection System for Pipelines Utilizing Horizontal Porous Tubes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/98484601309651544023.

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碩士<br>國立成功大學<br>資源工程學系<br>103<br>This project presents a new leak detection system for a long-distance pipeline using soil-gas techniques. The new leak detection system runs underground along the nearby pipeline and consists of intermittent porous tubes connected in series with impermeable polyethylene tubes. The effective detection radius from the conventional soil-gas probes is only ~5 m. Applying conventional soil-gas techniques to long-distance pipelines for leak detection usually requires a large number of soil-gas samples and analyses. Laboratory leak tests were conducted using the n

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Tseng, Yu-Chiao, and 曾禹樵. "The preparation of porous tubes of thermoplastic polyurethane for vascular graft applications." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/j5vm8h.

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碩士<br>國立臺灣科技大學<br>材料科學與工程系<br>106<br>In this study, thermoplastic polyurethane (TPU) tubes were prepared through phase inversion method using a cosolvent of N,N-dimethyl formamide (DMF) and tetrahydrofuran (THF). The resultant tubes were subsequently treated with UV-ozone to activate the surface. After grafting with acrylic acid (AA), gelatin was covalently immobilized onto the surface. Scanning electron microscope (SEM) was use to examine the surface morphology of the tube. Further characterization included XPS, tensile strength, burst pressure, contact angle, and hemocompatibility such as ac

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LI, CHENG-WEN, and 李程文. "Computational analysis of the behavior in porous radiant burners with bundle of capillary tubes." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/45292079226869350567.

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Lee, Jay-Chen, and 李爵辰. "A Study of Heat Transfer for Porous Heat Sink Characterized by Straight Circular Tubes." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/68429964095859491299.

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碩士<br>中原大學<br>機械工程研究所<br>93<br>ABSTRACT Since the rapid development of notebook computers, there are more and more problems related to high temperature. To find out an efficient method to eliminate heat in a small and limited space is always a direction to research. Also, the research of high performance and miniaturization drives the improvement of traditional heat sink. The old method of using jet to cool may not be applied efficiently. For saving the research cost and time, it is more and more important to use the analysis simulation ability of CFD calculation tool. The main purpose of this

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Wang, Chia-Tseng, and 王家增. "AN ANALYSIS OF TRANSPORT PHENOMENA IN INFRARED-RADIATION DRYING OF CYLINDRICAL TUBES OF POROUS MEDIA." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/00862368660991859124.

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碩士<br>國立交通大學<br>機械工程學系<br>85<br>In order to realize the important variables during a drying process that influences the producing rate and quality, a numerical analysis is performed in this study to examine characteristics in infrared-radiation drying of cylindrical tubes of porous media. When the tubes are dried by hot air and infrared radiation, the major internal moisture transfer mechanisms considered include 1. capillary flow of water in the fine capillaries and voids; and 2. water vapor flowing through the voids of a porous material by convection and diffusion. 　　In this study, we consi

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Fan, Chih-Feng, and 范智峰. "Visualization and Heat Transfer Performance of Pool Boiling of Refrigerants R-134a and R-404A on Porous and Structured Tubes." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/85006762489635634350.

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博士<br>國立中央大學<br>機械工程研究所<br>92<br>This is experimental work that intend to provide a further understanding of the physical phenomenon for refrigerants R-134a and R-404A boiled on structured and porous tubes. This thesis provides a detail visualization results for bubble formation characteristics and provides a measurement of heat transfer performance on smooth and enhanced tubes. The results show that the relation of heat transfer performance to the heat flux can be well explained by the bubble dynamics as observed in part I of this study. The experimental observation results support the ex

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Bale, Barbara Ann. "Mass transfer through a porous tube." Thesis, 2014. http://hdl.handle.net/10539/15753.

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Quirin, Paul E. "Mass and heat transfer characteristics of porous tube moisture control." 1994. http://catalog.hathitrust.org/api/volumes/oclc/32881563.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1994.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 131-133).

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Chang, Wen Lung, and 張文龍. "Mixed Convection of Vertical Tube Partially Filled with Porous Medium." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/76223867533439315679.

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Bartley, Jonathan Thomas. "Relative permeability studies of tube bundle models and unconsolidated porous media." 2002. http://hdl.handle.net/1993/19569.

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Wu, Jin-Cai, and 吳進財. "The Study of Manufacturing Porous Ceramic Tube and Its Applications on Plant Irrigation." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/98973804534463537403.

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碩士<br>遠東科技大學<br>材料科學與工程研究所<br>100<br>Abstract This study investigated the recycling use of waste diatomite as pore generating additives from filtering process in brewery, and waste glass powders from LCD foundry. They were used in plant irrigation constructed by porous ceramic tube, achieving the environmental goal of water-saving and reduced energy consumption. The experimental parameters included (1) ceramic composition, mixed by various ratio of diatomite (0wt.%,3wt.%,9wt.%,15wt.%), and 20wt.% glass powders of 149μm into white clay; (2) different sintering temperature (1100℃,1150℃,1180℃

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Chen, Chih-An, and 陳志安. "Numerical simulation of heat transfer of supercritical carbon dioxide within a porous medium tube." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/49845652820275906375.

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碩士<br>國立中央大學<br>機械工程研究所<br>96<br>Numerical simulation heat transfer of supercritical carbon dioxide in tube filled with porous media is considered in this work. The flow porous media is modeled using Brinkman-Forchheimer-extended-Darcy model. The effects of gravity and viscous dissipation are neglected, and assume as laminar flow. Three-dimension geometry is simplified to two-dimension, using axisymmetric condition. Variation of Nusselt number, which is affected by Reynolds number, Darcy number, Porosity, and thermal conductivity ratio of solid to fluid, will be discussed in this work

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HUANG, TZU-YU, and 黃子祐. "The Study of Thermal Phenomenon of Porous Flow of SCCO2 in a Horizontal Tube." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/c56ud3.

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Lin, Yung-Ching, and 林原慶. "Entropy Generation Analysis of Film Condensation on an Inclined Elliptical Tube under a Porous Laye." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/76146128213933072838.

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碩士<br>國立高雄應用科技大學<br>模具工程系碩士班<br>96<br>This paper aims to perform the entropy generation analysis of film condensation with the saturated vapor flowing slowly onto an inclined elliptical cylinder with a homogeneous porous medium layer. The thermodynamic second law and numerical method are to perform a theoretical study on this work. This paper also considers the Darcy model equations of motion for the study of the condensate flow in a porous medium layer. Both the dimensionless condensate film thickness and total dimensionless entropy generation rate during convection film-wise condensation hea

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Hsueh, Chih-jen, and 薛智仁. "Research on Fabrication of 3D PCL Porous Tube Tissue Engineering Scaffold by Dynamic Masking Rapid Prototyping System." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/01197577973067991592.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>97<br>In the previous Dynamic Mask Rapid Prototyping System developed in our laboratory, PCL mixed with PEG-HEMA were used as the bio-medical material system. In this previous system, however, the PEG-HEMA preparation is a time –consuming process. This study is devoted to decreasing the preparation time of bio-material, as well as improving the system, decreasing the whole process time, and raising the scaffold accuracy. In this study, the bio-medical material is synthesized using PCL and acryloyl chloride for three hours. The synthesized material can be photoinitiat

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