A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Dynamic Response of Granular Flows on a Rigid Barrier: Dense versus Dilute Flow
https://orcid.org/0000-0001-9972-4698
Devastating natural hazards induced by the propagation of extremely rapid, flow-like fragmented rocks can be reduced or even avoided by protective structures in the corresponding danger areas. Such barriers are expected to store the mass before it threatens the vulnerable infrastructures. Proper designs are required by calculating the peak impact force of granular flows on the barriers. In this work, a discrete element method (DEM) was validated with a physical experiment. Sixty simulations were carried out using DEM to study the flow regime governing the dynamic response of granular flows against the barrier. Results reveal that the inertial number (I) can demarcate the flow regime into dense and dilute flow. For the dense flows (I < 3), the equation based on the hydrodynamic model is much more efficient. For the dilute flows (I > 3), the Hertz contact method is better at calculating the peak load. The aforementioned findings are expected to be convenient for engineers designing mitigation constructions against flow-like hazards in mountain areas.
Dynamic Response of Granular Flows on a Rigid Barrier: Dense versus Dilute Flow
https://orcid.org/0000-0001-9972-4698
Devastating natural hazards induced by the propagation of extremely rapid, flow-like fragmented rocks can be reduced or even avoided by protective structures in the corresponding danger areas. Such barriers are expected to store the mass before it threatens the vulnerable infrastructures. Proper designs are required by calculating the peak impact force of granular flows on the barriers. In this work, a discrete element method (DEM) was validated with a physical experiment. Sixty simulations were carried out using DEM to study the flow regime governing the dynamic response of granular flows against the barrier. Results reveal that the inertial number (I) can demarcate the flow regime into dense and dilute flow. For the dense flows (I < 3), the equation based on the hydrodynamic model is much more efficient. For the dilute flows (I > 3), the Hertz contact method is better at calculating the peak load. The aforementioned findings are expected to be convenient for engineers designing mitigation constructions against flow-like hazards in mountain areas.
Dynamic Response of Granular Flows on a Rigid Barrier: Dense versus Dilute Flow
https://orcid.org/0000-0001-9972-4698
Devastating natural hazards induced by the propagation of extremely rapid, flow-like fragmented rocks can be reduced or even avoided by protective structures in the corresponding danger areas. Such barriers are expected to store the mass before it threatens the vulnerable infrastructures. Proper designs are required by calculating the peak impact force of granular flows on the barriers. In this work, a discrete element method (DEM) was validated with a physical experiment. Sixty simulations were carried out using DEM to study the flow regime governing the dynamic response of granular flows against the barrier. Results reveal that the inertial number (I) can demarcate the flow regime into dense and dilute flow. For the dense flows (I < 3), the equation based on the hydrodynamic model is much more efficient. For the dilute flows (I > 3), the Hertz contact method is better at calculating the peak load. The aforementioned findings are expected to be convenient for engineers designing mitigation constructions against flow-like hazards in mountain areas.
Dynamic Response of Granular Flows on a Rigid Barrier: Dense versus Dilute Flow
Int. J. Geomech.
Dong, Zhi-Bo (author) / Su, Li-Jun (author) / Xiao, Si-You (author) / Zhang, Chong-Lei (author)
2022-07-01
Article (Journal)
Electronic Resource
English
Modelling Dense Granular Flows
| British Library Online Contents | 2009
Discrete particle simulation of gas-solid flows (From dilute to dense flows)
| DOAJ | 2014
Numerical Investigation of Multiple-Impact Behavior of Granular Flow on a Rigid Barrier
| DOAJ | 2020
Constitutive Relation for Dense Granular Flow
| British Library Conference Proceedings | 1999