Multiplicity of states in Taylor-Couette flow of a dense granular gas

Multiplicity of states in Taylor-Couette flow of a dense granular gas

Molecular dynamics simulations with a purely repulsive Lennard-Jones potential and a normal damping force is used to simulate the granular flow in the annular region between two differentially-rotating cylinders, called the Taylor-Couette flow. The flow transition from the azimuthally-invariant Circ...

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Main Authors: Gopan Nandu, Alam Meheboob
Format: Article
Language:English
Published: EDP Sciences 2021-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2021/03/epjconf_pg2021_03015.pdf
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spelling doaj-14b493abce5443ba86bbdf088559f2642021-08-03T00:25:53ZengEDP SciencesEPJ Web of Conferences2100-014X2021-01-012490301510.1051/epjconf/202124903015epjconf_pg2021_03015Multiplicity of states in Taylor-Couette flow of a dense granular gasGopan Nandu0Alam Meheboob1Department of Aerospace Engineering, Amrita School of EngineeringEngineering Mechanics Unit, Jawaharlal Nehru Centre for Advanced Scientific ResearchMolecular dynamics simulations with a purely repulsive Lennard-Jones potential and a normal damping force is used to simulate the granular flow in the annular region between two differentially-rotating cylinders, called the Taylor-Couette flow. The flow transition from the azimuthally-invariant Circular Couette flow (CCF) to the Taylor-vortex flow (TVF) is studied by increasing the rotation rate (ωi) of the inner cylinder, with the outer cylinder being kept stationary. Multiplicity of states, highlighting the hysteretic nature of the “CCF ↔ TVF” transition, is observed over a wide range of rotation rates. The onset of Taylor vortices is quantified in terms of the maximum radial velocity and the net circulation per vortex.https://www.epj-conferences.org/articles/epjconf/pdf/2021/03/epjconf_pg2021_03015.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Gopan Nandu
Alam Meheboob
spellingShingle Gopan Nandu
Alam Meheboob
Multiplicity of states in Taylor-Couette flow of a dense granular gas
EPJ Web of Conferences
author_facet Gopan Nandu
Alam Meheboob
author_sort Gopan Nandu
title Multiplicity of states in Taylor-Couette flow of a dense granular gas
title_short Multiplicity of states in Taylor-Couette flow of a dense granular gas
title_full Multiplicity of states in Taylor-Couette flow of a dense granular gas
title_fullStr Multiplicity of states in Taylor-Couette flow of a dense granular gas
title_full_unstemmed Multiplicity of states in Taylor-Couette flow of a dense granular gas
title_sort multiplicity of states in taylor-couette flow of a dense granular gas
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2021-01-01
description Molecular dynamics simulations with a purely repulsive Lennard-Jones potential and a normal damping force is used to simulate the granular flow in the annular region between two differentially-rotating cylinders, called the Taylor-Couette flow. The flow transition from the azimuthally-invariant Circular Couette flow (CCF) to the Taylor-vortex flow (TVF) is studied by increasing the rotation rate (ωi) of the inner cylinder, with the outer cylinder being kept stationary. Multiplicity of states, highlighting the hysteretic nature of the “CCF ↔ TVF” transition, is observed over a wide range of rotation rates. The onset of Taylor vortices is quantified in terms of the maximum radial velocity and the net circulation per vortex.
url https://www.epj-conferences.org/articles/epjconf/pdf/2021/03/epjconf_pg2021_03015.pdf
work_keys_str_mv AT gopannandu multiplicityofstatesintaylorcouetteflowofadensegranulargas
AT alammeheboob multiplicityofstatesintaylorcouetteflowofadensegranulargas
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