PROPAGATION OF VISCOPLASTIC SURGES OVER COMPLEX TOPOGRAPHY


Educational objectives


Viscoplastic, or yield-stress, fluids are involved in numerous geophysical and industrial applications. These materials have the property to behave either as fluids or solids, depending on the applied loading. Due to the coexistence in the flows of fluid and solid zones, whose respective boundaries are a priori unknown, simulating the propagation and deposition of free-surface viscoplastic surges remains challenging, in particular when the basal topography is complex.

The objectives of this lab-course are (1) to perform well-controlled laboratory experiments in which viscoplastic, gravity-driven surges are generated over a complex topography; and (2) to compare the experimental results to the predictions of a hydraulic numerical model. Through this comparison, important assumptions concerning the treatment of viscoplastic rheology in the numerical model will be tested.

 

 

Prerequisite


This lab course is well suited to M2 and PhD students with a background in fluid mechanics and / or materials science.

Module 1: Experimental study of gravity driven viscoplastic surges


4hrs session

Teacher: Guillaume Chambon

Module 2: Numerical simulations and comparison of the results


4 hrs session

Teacher: Guillaume Chambon

Contacts


Guillaume Chambon

INRAE Grenoble

Location


This lab-course is hosted in the premises of INRAE Grenoble, located at 2 rue de la papeterie, on the university campus.