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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.

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

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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