A model of the formation of a porous fibrous cake

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dc.contributor.authorWilliams, Edward McRaeen
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:38:43Zen
dc.date.adate2009-06-16en
dc.date.available2014-03-14T21:38:43Zen
dc.date.issued1994en
dc.date.rdate2009-06-16en
dc.date.sdate2009-06-16en
dc.description.abstractA continuous physical cake made up of porous fibrous media can be formed by using air to draw the fibers to a moving screen. A numerical model of the formation of this cake has been formulated and solved. The numerical model is based on solving Darcy’s law, the Bernoulli equation, and two-material related experimental correlations at discrete points along the screen. A permeability measurement test apparatus was designed and built, and experiments were run to determine the experimental relations for two different materials. A computer code was then written to solve the system of equations at each point on the screen and give a density distribution of the resulting cake. Tests were then run to see the effects of various density anomalies in the material at different points along the screen. The results of the experiments show that the first material was more permeable and more compressible than the second material. This lead to distinct differences in the cake that the two formed in the numerical model. The first material formed a fairly constant density cake that was not greatly affected by the density anomalies. The second material had a large variation in density across the final cake height and was affected more by the different density anomalies.en
dc.description.degreeMaster of Scienceen
dc.format.extentvi, 101 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-06162009-063510en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06162009-063510/en
dc.identifier.urihttp://hdl.handle.net/10919/43345en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.W5535.pdfen
dc.relation.isformatofOCLC# 32451931en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.W5535en
dc.subject.lcshFibrous composites -- Mathematical modelsen
dc.subject.lcshPorous materials -- Mathematical modelsen
dc.titleA model of the formation of a porous fibrous cakeen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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