Work

Numerical Model for Granular Flow With Interstitial Fluid

Year: 2025

Type: article

Abstract: ABSTRACT We present a constitutive model for the mechanical behavior of granular flow for both solid‐like and fluid‐like regimes. The stress rate tensor is decomposed into rate‐independent and rate‐dependent parts. The hypoplastic model is used for the rate‐independent part, while the ‐type rheological model is employed for the rate‐dependent part. The Stokes number is introduced to capture the influence of interstitial fluid viscosity within the rate‐dependent part of the model. The model performance is demonstrated through numerical simulations of element tests, encompassing both granular materials and granular‐fluid mixtures.

Source: International Journal for Numerical and Analytical Methods in Geomechanics

DOI: 10.1002/nag.3990

Authors: Yadong Wang, Wei Wu

Institution: BOKU University

Language: English

Topic: Granular flow and fluidized beds

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: European Commission, Austrian Science Fund, HORIZON EUROPE Framework Programme, H2020 Marie Skłodowska-Curie Actions

Awards: G1417465789, G374018792, G3784668544, High-fidelity multiscale modelling of debris flows, G5774336379