l. l. ferrás 1 , j. m. nóbrega 1 , f . t. pinho 2 , o. s.carneiro 1
DESCRIPTION
On The Effect of THE Wall Slip BOUNDARY Condition. L. L. Ferrás 1 , J. M. Nóbrega 1 , F . T. Pinho 2 , O. S.Carneiro 1. 1 IPC – Institute for Polymers and Composites , University of Minho , Campus de Azurém , 4800-058 Guimarães, Portugal - PowerPoint PPT PresentationTRANSCRIPT
Diapositivo 1
L. L. Ferrs1, J. M. Nbrega1 , F. T. Pinho 2, O. S.Carneiro11 IPC Institute for Polymers and Composites, University of Minho, Campus de Azurm, 4800-058 Guimares, Portugal2 University of Porto, Centro de Estudos de Fenmenos de Transporte, Faculdade de Engenharia, Rua Dr. Roberto Frias s/n, 4200-465 Porto, PortugalOn The Effect of THE Wall Slip BOUNDARY Condition
IPC - Institute for Polymers and CompositesUniversity of MinhoPortugalCFD Computational fluid dynamics (Cfd) extrusion Friction - slip Case study I 4:1 contractionExtrusionFriction - SlipCase Study I Case study II extrusion dieCase Study IICFD ExtrusionFriction - SlipCase Study ICase Study II
CFD ExtrusionFriction - SlipCase Study ICase Study II
Conservation of Mass:
Conservation of Momentum:Constitutive Equation (simplified PTT):Linear Exponential CFD ExtrusionFriction - SlipCase Study ICase Study IIEquations:
no-slip boundary condition
CFD ExtrusionFriction - SlipCase Study ICase Study II
CFD ExtrusionFriction - SlipCase Study ICase Study IIExperimentalnumerical
MA Alves,FT Pinho, PJ Oliveira. Viscoelastic flow in a 3D square/square contraction: visualizations and simulations. Journal of Rheology 52(6) (2008) 1347-1368CFD ExtrusionFriction - SlipCase Study ICase Study IInumerical
AM Afonso, PJ Oliveira, FT Pinho, MA Alves, Dynamics of high-Deborah-number entry flows - A numerical study. Journal of Fluid Mechanics 677 (2011) 277-304CFD ExtrusionFriction - SlipCase Study ICase Study IIband heatersscrewpolymerextrusion diecooling systemwatermeltCFD ExtrusionFriction - SlipCase Study ICase Study IIExtrusion:hopperscrew drivemotor
Extrusion dIE:CFD ExtrusionFriction - SlipCase Study ICase Study IIFriction: solidsCFD ExtrusionFriction - SlipCase Study ICase Study II
Friction: solidsCFD ExtrusionFriction - SlipCase Study ICase Study II13Friction: Fluids
CFD ExtrusionFriction - SlipCase Study ICase Study IIFriction: Fluids?solidliquidSurface roughnessMolecular interactionwettingShear ratepressureCFD ExtrusionFriction - SlipCase Study ICase Study II
CFD ExtrusionFriction - SlipCase Study ICase Study IIwaterViscoelastic fluid
slip velocityslip coefficienttangent stress vectorCFD ExtrusionFriction - SlipCase Study ICase Study IIConservation of Mass:
Conservation of Momentum:Constitutive Equation (simplified PTT):Equations:slip boundary conditionCFD ExtrusionFriction - SlipCase Study ICase Study IINoRemove the boundary velocity from the momentum equationCompute velocity at the Boundary
CFD ExtrusionFriction - SlipCase Study ICase Study II Case study I 4:1 contractionCFD ExtrusionFriction - SlipCase Study ICase Study IIA
CFD ExtrusionFriction - SlipCase Study ICase Study II21B
CFD ExtrusionFriction - SlipCase Study ICase Study II22Ba
CFD ExtrusionFriction - SlipCase Study ICase Study II23Bb
CFD ExtrusionFriction - SlipCase Study ICase Study II24Bc
CFD ExtrusionFriction - SlipCase Study ICase Study II25Bd
CFD ExtrusionFriction - SlipCase Study ICase Study II26C
CFD ExtrusionFriction - SlipCase Study ICase Study II27Ca
CFD ExtrusionFriction - SlipCase Study ICase Study II28Caa
CFD ExtrusionFriction - SlipCase Study ICase Study II29Cab
CFD ExtrusionFriction - SlipCase Study ICase Study II30Cac
CFD ExtrusionFriction - SlipCase Study ICase Study II31Cad
CFD ExtrusionFriction - SlipCase Study ICase Study II32Cb
CFD ExtrusionFriction - SlipCase Study ICase Study II33Cc
CFD ExtrusionFriction - SlipCase Study ICase Study II34Cd
CFD ExtrusionFriction - SlipCase Study ICase Study II35D
CFD ExtrusionFriction - SlipCase Study ICase Study II36Da
CFD ExtrusionFriction - SlipCase Study ICase Study II37Db
CFD ExtrusionFriction - SlipCase Study ICase Study II38Dc
CFD ExtrusionFriction - SlipCase Study ICase Study II39Dd
CFD ExtrusionFriction - SlipCase Study ICase Study II40E
CFD ExtrusionFriction - SlipCase Study ICase Study II41Ea
CFD ExtrusionFriction - SlipCase Study ICase Study II42Eb
CFD ExtrusionFriction - SlipCase Study ICase Study II43Ed
CFD ExtrusionFriction - SlipCase Study ICase Study II44F
CFD ExtrusionFriction - SlipCase Study ICase Study II45Fa
CFD ExtrusionFriction - SlipCase Study ICase Study II46Fb
CFD ExtrusionFriction - SlipCase Study ICase Study II47Fc
CFD ExtrusionFriction - SlipCase Study ICase Study II48Fd
CFD ExtrusionFriction - SlipCase Study ICase Study II49G
CFD ExtrusionFriction - SlipCase Study ICase Study II50H
CFD ExtrusionFriction - SlipCase Study ICase Study II51Ucenter/U2Ucenter= velocity along the center of the flow channelxyx/H
CFD ExtrusionFriction - SlipCase Study ICase Study II Case study II extrusion dieCFD ExtrusionFriction - SlipCase Study ICase Study II
CFD ExtrusionFriction - SlipCase Study ICase Study II
Pre-Processor
GeometryMesh
3D non-isothermal flow field calculation (FVM)VelocityPressureTemperatureTrial ParametersPerformance Evaluation
Modification of the controllable geometrical parameters until the optimum is reachedCFD ExtrusionFriction - SlipCase Study ICase Study IICFD ExtrusionFriction - SlipCase Study ICase Study II
CFD ExtrusionFriction - SlipCase Study ICase Study II
K=0
CFD ExtrusionFriction - SlipCase Study ICase Study II
K=0.25E-8
CFD ExtrusionFriction - SlipCase Study ICase Study II
K=0.25E-7
CFD ExtrusionFriction - SlipCase Study ICase Study II
K=1.0E-7
CFD ExtrusionFriction - SlipCase Study ICase Study II
K=0.25E-6
CFD ExtrusionFriction - SlipCase Study ICase Study II
K=1.0E-6The end