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StratifiedGRANULAR SIGNED

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

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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 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.

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

Project "StratifiedGRANULAR" data sheet

The following table provides information about the project.

Coordinator
TECHNISCHE UNIVERSITAT DARMSTADT 

Organization address
address: KAROLINENPLATZ 5
city: DARMSTADT
postcode: 64289
website: www.tu-darmstadt.de

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

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    TECHNISCHE UNIVERSITAT DARMSTADT DE (DARMSTADT) coordinator 159˙460.00

Map

 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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