Fountain flow revisited: The effect of various fluid mechanics parameters

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dc.contributor.author Mitsoulis, E en
dc.date.accessioned 2014-03-01T01:33:30Z
dc.date.available 2014-03-01T01:33:30Z
dc.date.issued 2010 en
dc.identifier.issn 0001-1541 en
dc.identifier.uri http://hdl.handle.net/123456789/20455
dc.subject Compressibility en
dc.subject Exit correction en
dc.subject Fountain flow en
dc.subject Gravity en
dc.subject Inertia en
dc.subject Injection molding en
dc.subject Newtonian fluid en
dc.subject Pressure-dependence of viscosity en
dc.subject Surface tension en
dc.subject Wall slip en
dc.subject.classification Engineering, Chemical en
dc.subject.other Exit correction en
dc.subject.other Fountain flow en
dc.subject.other Gravity en
dc.subject.other Inertia en
dc.subject.other Newtonian fluid en
dc.subject.other Newtonian fluids en
dc.subject.other Wall slip en
dc.subject.other Compressibility en
dc.subject.other Computer simulation en
dc.subject.other Contacts (fluid mechanics) en
dc.subject.other Finite element method en
dc.subject.other Fluid mechanics en
dc.subject.other Fluids en
dc.subject.other Fountains en
dc.subject.other Injection molding en
dc.subject.other Molds en
dc.subject.other Surface chemistry en
dc.subject.other Surface properties en
dc.subject.other Surface tension en
dc.subject.other Viscosity en
dc.subject.other Wetting en
dc.subject.other Pressure effects en
dc.title Fountain flow revisited: The effect of various fluid mechanics parameters en
heal.type journalArticle en
heal.identifier.primary 10.1002/aic.12038 en
heal.identifier.secondary http://dx.doi.org/10.1002/aic.12038 en
heal.language English en
heal.publicationDate 2010 en
heal.abstract Numerical simulations have been undertaken for the benchmark problem of fountain flow present in injection-mold filling. The finite element method (FEM) is used to provide numerical results for both cases of planar and axisymmetric domains under laminar, isothermal, steady-state conditions for Newtonian fluids. The effects of inertia, gravity, surface tension, compressibility, slip at the wall, and pressure dependence of the viscosity are all considered individually in parametric studies covering a wide range of the relevant parameters. These results extend previous ones regarding the shape of the front, and in particular the centerline front position, as a function of the dimensionless parameters. The pressures from the simulations have been used to compute the excess pressure losses in the system (front pressure correction or exit correction). Inertia leads to highly extended front positions relative to the inertialess Newtonian values, which are 0.895 for the planar case and 0.835 for the axisymmetric one. Gravity acting in the direction of flow shows the same effect, while gravity opposing the flow gives a reduced bulge of the fountain. Surface tension, slip at the wall, and compressibility, all decrease the shape of the front. Pressure-dependence of the viscosity leads to increased front position as a corresponding dimensionless parameter goes from zero (no effect) to higher values of the pressure-shift factor. The exit correction increases monotonically with inertia, compressibility, and gravity, while it decreases monotonically with slip and pressure-dependence of the viscosity. Contour plots of the primary variables (velocity-pressure) show interesting trends compared with the base case (zero values of the dimensionless parameters and of surface tension). (C) 2009 American Institute of Chemical Engineers AIChE J, 56: 1147-1162, 2010 en
heal.publisher JOHN WILEY & SONS INC en
heal.journalName AIChE Journal en
dc.identifier.doi 10.1002/aic.12038 en
dc.identifier.isi ISI:000276979300004 en
dc.identifier.volume 56 en
dc.identifier.issue 5 en
dc.identifier.spage 1147 en
dc.identifier.epage 1162 en

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