Affiliation:
1. School of Mechanical Sciences, Indian Institute of Technology Goa , Ponda 403401, Goa, India
Abstract
We employ computations to examine transition in granular flow, right above an aperture, in a silo draining under gravity. We show that the energy dissipation rate exhibits a well-defined peak near the aperture. Tracing locations of maximum dissipation rate describes an arch, signifying flow transition. We present a correlation between the transition boundary and outlet using the arguments of self-similarity and geometric similarity, suggesting the spatial non-monotonicity of the dissipation rate to be a signature of flow transition. Utilizing the aforementioned similarity criteria, we also explore the kinetic pressure as a marker of transition in granular flow.
Funder
Science and Engineering Research Board
Subject
Condensed Matter Physics,Fluid Flow and Transfer Processes,Mechanics of Materials,Computational Mechanics,Mechanical Engineering
Cited by
2 articles.
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