Investigation of Erosion and Deposition of Sand Particles within a Pin Fin Array

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dc.contributor.authorCowan, Jonathan B.en
dc.contributor.committeechairTafti, Danesh K.en
dc.contributor.committeememberPaul, Mark R.en
dc.contributor.committeememberEkkad, Srinath V.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T20:48:57Zen
dc.date.adate2009-12-11en
dc.date.available2014-03-14T20:48:57Zen
dc.date.issued2009-12-03en
dc.date.rdate2009-12-11en
dc.date.sdate2009-12-04en
dc.description.abstractThe transport of particulates within both a fully developed and developing pin fin arrays is explored using computational fluid dynamics (CFD) simulations. The simulations are carried out using the LES solver, GenIDLEST, for the fluid (carrier) phase and a Langragian approach for the particle (dispersed) phase. A grid independency study and validation case versus relevant experiments are given to lend confidence to the numerical simulations. Various Stokes numbers (0.78, 3.1 and 19.5) are explored as well as three nondimensional particle softening temperatures (θ<sub>ST</sub> = 0, 0.37 and 0.67). The deposition is shown to increase with decreasing particle Stokes number and thus decreasing size from 0.005% for St<sub>p</sub> = 19.5 to 13.4% for St<sub>p</sub> = 0.78 and is almost completely concentrated on the channel walls (99.6% - 100%). The erosion potential is shown to increase with Stokes number and is highest on the pin faces. As is to be expected, the deposition increases with decreasing softening temperature from 13.4% at θ<sub>ST</sub> = 0.67 to 79% for θ<sub>ST</sub> =0. Overall, the channel walls of the array show the greatest potential for deposition. On the other hand, the pin faces show the greatest potential for erosion. Similarly, the higher Stokes number particles have more erosion potential while the lower Stokes number particles have a higher potential for erosion.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-12042009-095851en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12042009-095851/en
dc.identifier.urihttp://hdl.handle.net/10919/35959en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartCowan_JB_T_2009.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectParticleen
dc.subjectDepositionen
dc.subjectErosionen
dc.subjectPin Finen
dc.subjectComputational fluid dynamicsen
dc.titleInvestigation of Erosion and Deposition of Sand Particles within a Pin Fin Arrayen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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