Numerical flow front tracking for aluminium extrusion of a tube and a comparison with experiments

A.J. Koopman, Hubertus J.M. Geijselaers, K.E. Nilsen, P.T.G. Koenis

Research output: Contribution to conferencePaper

1 Citation (Scopus)
32 Downloads (Pure)

Abstract

The first stages of the extrusion process can lead to extraordinary deformations of the extrusion dies. Especially in porthole dies the location of the mandrel can shift due to deformation of the die. This paper focuses on the problems related to the simulation of the filling of porthole dies during this start-up of the process. To avoid expensive remeshing during an Updated Lagrangian simulation an Eulerian description is used. This is time efficient however it gives challenges with respect to the tracking of the flow front. During the filling a function that keeps track of the flow front has to be convected through the mesh [5]. In this paper we show that by using the smooth original coordinate function the convection can be done accurately. The result is that during the simulations the volume is conserved properly. The simulated flow fronts are compared to experimental results. In a previous paper [3] we have shown the accuracy of the original coordinate function, in 2D simulations. In this paper the extension to 3D is made adding a comparison with experiments.
Original languageUndefined
Number of pages4
Publication statusPublished - 2008
EventESAFORM 2008: 11th International ESAFORM Conference on Materials Forming - Lyon, France
Duration: 23 Apr 200825 Apr 2008

Conference

ConferenceESAFORM 2008
CountryFrance
CityLyon
Period23/04/0825/04/08

Keywords

  • IR-60614

Cite this

Koopman, A. J., Geijselaers, H. J. M., Nilsen, K. E., & Koenis, P. T. G. (2008). Numerical flow front tracking for aluminium extrusion of a tube and a comparison with experiments. Paper presented at ESAFORM 2008, Lyon, France.
Koopman, A.J. ; Geijselaers, Hubertus J.M. ; Nilsen, K.E. ; Koenis, P.T.G. / Numerical flow front tracking for aluminium extrusion of a tube and a comparison with experiments. Paper presented at ESAFORM 2008, Lyon, France.4 p.
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abstract = "The first stages of the extrusion process can lead to extraordinary deformations of the extrusion dies. Especially in porthole dies the location of the mandrel can shift due to deformation of the die. This paper focuses on the problems related to the simulation of the filling of porthole dies during this start-up of the process. To avoid expensive remeshing during an Updated Lagrangian simulation an Eulerian description is used. This is time efficient however it gives challenges with respect to the tracking of the flow front. During the filling a function that keeps track of the flow front has to be convected through the mesh [5]. In this paper we show that by using the smooth original coordinate function the convection can be done accurately. The result is that during the simulations the volume is conserved properly. The simulated flow fronts are compared to experimental results. In a previous paper [3] we have shown the accuracy of the original coordinate function, in 2D simulations. In this paper the extension to 3D is made adding a comparison with experiments.",
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Koopman, AJ, Geijselaers, HJM, Nilsen, KE & Koenis, PTG 2008, 'Numerical flow front tracking for aluminium extrusion of a tube and a comparison with experiments' Paper presented at ESAFORM 2008, Lyon, France, 23/04/08 - 25/04/08, .

Numerical flow front tracking for aluminium extrusion of a tube and a comparison with experiments. / Koopman, A.J.; Geijselaers, Hubertus J.M.; Nilsen, K.E.; Koenis, P.T.G.

2008. Paper presented at ESAFORM 2008, Lyon, France.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Numerical flow front tracking for aluminium extrusion of a tube and a comparison with experiments

AU - Koopman, A.J.

AU - Geijselaers, Hubertus J.M.

AU - Nilsen, K.E.

AU - Koenis, P.T.G.

PY - 2008

Y1 - 2008

N2 - The first stages of the extrusion process can lead to extraordinary deformations of the extrusion dies. Especially in porthole dies the location of the mandrel can shift due to deformation of the die. This paper focuses on the problems related to the simulation of the filling of porthole dies during this start-up of the process. To avoid expensive remeshing during an Updated Lagrangian simulation an Eulerian description is used. This is time efficient however it gives challenges with respect to the tracking of the flow front. During the filling a function that keeps track of the flow front has to be convected through the mesh [5]. In this paper we show that by using the smooth original coordinate function the convection can be done accurately. The result is that during the simulations the volume is conserved properly. The simulated flow fronts are compared to experimental results. In a previous paper [3] we have shown the accuracy of the original coordinate function, in 2D simulations. In this paper the extension to 3D is made adding a comparison with experiments.

AB - The first stages of the extrusion process can lead to extraordinary deformations of the extrusion dies. Especially in porthole dies the location of the mandrel can shift due to deformation of the die. This paper focuses on the problems related to the simulation of the filling of porthole dies during this start-up of the process. To avoid expensive remeshing during an Updated Lagrangian simulation an Eulerian description is used. This is time efficient however it gives challenges with respect to the tracking of the flow front. During the filling a function that keeps track of the flow front has to be convected through the mesh [5]. In this paper we show that by using the smooth original coordinate function the convection can be done accurately. The result is that during the simulations the volume is conserved properly. The simulated flow fronts are compared to experimental results. In a previous paper [3] we have shown the accuracy of the original coordinate function, in 2D simulations. In this paper the extension to 3D is made adding a comparison with experiments.

KW - IR-60614

M3 - Paper

ER -

Koopman AJ, Geijselaers HJM, Nilsen KE, Koenis PTG. Numerical flow front tracking for aluminium extrusion of a tube and a comparison with experiments. 2008. Paper presented at ESAFORM 2008, Lyon, France.