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Modelling of rheologically stratified granular flows by a multi-layer depth-averaged approach

Total Cost €


EC-Contrib. €






 StratifiedGRANULAR project word cloud

Explore the words cloud of the StratifiedGRANULAR project. It provides you a very rough idea of what is the project "StratifiedGRANULAR" about.

regards    showed    exhibit    hazard    capturing    validation    hazardous    mathematical    incorporated    serious    stage    fluid    rheologically    numerical    sustainable    models    proper    dimensional    numerically    curvilinear    experimental    flows    rock    priorities    layer    last    dense    velocity    coordinates    finite    pattern    geophysical    life    constitutive    superimposition    computational    debris    dynamics    resilience    model    suitable    investigations    data    ing    hazards    natural    flow    climate    fraction    gathered    solid    line    designed    interstitial    multidisciplinary    volume    properly    hyperbolicity    force    previously    basal    rheological    law    attached    averaged    conservative    devoted    equations    tool    local    occurrence    topography    momentum    computationally    infrastructures    scheme    curvature    dry    stratified    regimes    avalanches    lower    theories    physics    granular    chains    completely    settlements    indicates    wise    capture    describing    strict    direction    form    human   

Project "StratifiedGRANULAR" data sheet

The following table provides information about the project.


Organization address
postcode: 64289

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Total cost 159˙460 €
 EC max contribution 159˙460 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2017
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2019
 Duration (year-month-day) from 2019-10-01   to  2021-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Geophysical granular flows, like rock avalanches and debris flows, represent a serious hazard to life and infrastructures in Europe. Yet their dynamics is still far from being completely understood. Recent experimental investigations on granular flows showed that velocity and solid volume fraction exhibit a stratified pattern along the flow depth. This indicates the superimposition of different rheological regimes. Moreover, non-local rheological theories have been recently proposed for capturing momentum exchanges, driven by the occurrence of force chains. The present multidisciplinary project aims at developing a computationally cost-effective multi-layer depth-averaged model for describing rheologically stratified granular flows. The model, having much lower computational costs than three-dimensional models, will be designed to capture the essential physics of granular flows in the depth-wise direction. To properly take into account the curvature effects due to basal topography, the model equations will be derived in curvilinear coordinates attached to the topography. Moreover, a suitable non-local constitutive law will be incorporated. The resulting equations will be numerically integrated by a proper finite volume scheme, taking into account their main mathematical properties, i.e. non-strict hyperbolicity and non-conservative form. The model validation will be carried out by using a wide experimental data set, previously gathered by the applicant on dry granular flows. The last stage of the project is devoted to extending the multi-layer approach to cases with dense interstitial fluid, so as to allow its application to debris flows. In line with H2020 priorities, especially as regards sustainable human settlements and their resilience to natural hazards due to climate changes, the project has the potential to provide an advanced mathematical-numerical tool for better identifying the hazardous areas associated with avalanches and debris flows.

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