Project description
New numerical model for describing geophysical granular flows
Geophysical granular flows, such as rock avalanches and debris flows, pose a serious hazard to life and infrastructures in Europe. Understanding their complex behaviour remains an important challenge. Recent experimental investigations of granular flows showed that velocity and solid volume fraction exhibit a stratified pattern along the flow depth. The EU-funded StratifiedGRANULAR project aims to provide further insight into these events by exploring different aspects in isolation, using a combination of mathematical theory, numerical simulations and small-scale experiments. Focus will be placed on developing a cost-effective model for capturing the underlying physics of granular flows in the depth-wise direction. The project is expected to provide advanced numerical tools for better identifying areas associated with avalanches and debris flows.
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.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
- natural sciences physical sciences astronomy planetary sciences planetary geology
- natural sciences earth and related environmental sciences physical geography natural disasters
- social sciences law
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
MSCA-IF-EF-ST - Standard EF
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2017
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
64289 Darmstadt
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.