Please use this identifier to cite or link to this item: https://dspace.iiti.ac.in/handle/123456789/16418
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dc.contributor.authorPandey, Nikhil Kumaren_US
dc.contributor.authorNeelima Satyam, D.en_US
dc.date.accessioned2025-07-09T13:48:01Z-
dc.date.available2025-07-09T13:48:01Z-
dc.date.issued2025-
dc.identifier.citationPandey, N. K., & Satyam, N. (2025). Role of Finer Particles in Rheological Characterization of Debris Flows: Insights from Western Himalayas. Indian Geotechnical Journal. https://doi.org/10.1007/s40098-025-01286-4en_US
dc.identifier.issn0971-9555-
dc.identifier.otherEID(2-s2.0-105008545491)-
dc.identifier.urihttps://dx.doi.org/10.1007/s40098-025-01286-4-
dc.identifier.urihttps://dspace.iiti.ac.in:8080/jspui/handle/123456789/16418-
dc.description.abstractDebris flows are catastrophic mass movements with significant social and environmental consequences, particularly in the Western Himalayas. Understanding the rheological properties of debris flow material is crucial for accurately modeling their behavior and predicting their impacts. In this study, rheological parameters such as yield stress and viscosity were determined through extensive laboratory testing using a parallel plate setup in a rheometer. Reconstituted soil samples from the debris flow zone were prepared using an optimized sampling approach to vary the solid volume concentration and water content (w/c). Experimental results revealed non-Newtonian behavior for all tested compositions, which closely aligned with the Herschel–Bulkley rheological model. The Herschel–Bulkley parameters were subsequently used to calibrate a smooth particle hydrodynamics (SPH) model in the open-access DualSPHysics tool. The results showed that water content and silt concentration played a significant role in influencing the rheology, with finer particles exhibiting higher viscosity and shear stress compared to coarser particles. The SPH simulations effectively replicated the flow behavior observed during the Kotrupi debris flow event (2017), providing insights into flow dynamics, such as velocity and shear distribution. This integration of experimental rheology and numerical modeling advances our understanding of debris flow mechanics and highlights the importance of incorporating rheological calibration in predictive debris flow models. © The Author(s), under exclusive licence to Indian Geotechnical Society 2025.en_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.sourceIndian Geotechnical Journalen_US
dc.subjectDebris flowen_US
dc.subjectKotrupien_US
dc.subjectRheological parameteren_US
dc.subjectRheometeren_US
dc.subjectSuspensionen_US
dc.subjectViscosityen_US
dc.titleRole of Finer Particles in Rheological Characterization of Debris Flows: Insights from Western Himalayasen_US
dc.typeJournal Articleen_US
Appears in Collections:Department of Civil Engineering

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