Slipping zone location in squeeze flow

Patrice Estellé (1) , Christophe Lanos (1) , Arnaud Perrot (2) , Colin Servais

1 LGCGM - Laboratoire de Génie Civil et Génie Mécanique
2 LIMATB - Laboratoire d'Ingénierie des Matériaux de Bretagne

In squeeze flow rheometry, the main problem is the boundary condition between the squeezed material and the plates. Therefore, the crucial assumption is to know the location and the shape of the sample part where wall slip may or may not occur. This question is investigated from experimental results. For this, squeeze flow experiments are carried out to visualize the flow pattern at the walls. Influence of boundary conditions is particularly studied using different plate surface condition. As a result, with wall slipping conditions, we propose a flow modelling divided into two zones: a circular central zone of the sample sticks on the plates and, beyond that zone, the sample slips at the plates with friction.

Mots clés: Squeezing; Wall slip; Flow visualization; Flow Modelling

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Patrice Estellé, Christophe Lanos, Arnaud Perrot, Colin Servais. Slipping zone location in squeeze flow. Rheologica Acta, 2005, 45, pp.444-448. ⟨10.1007/s00397-005-0070-2⟩. ⟨hal-00663492⟩