About: Multiphase Flows: Rich Physics, Challenging Theory, and Big Simulations

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An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Multiphase Flows: Rich Physics, Challenging Theory, and Big Simulations
Creator	Subramaniam, Shankar
source	ArXiv
abstract	Understanding multiphase flows is vital to addressing some of our most pressing human needs: clean air, clean water and the sustainable production of food and energy. This article focuses on a subset of multiphase flows called particle-laden suspensions involving non-deforming particles in a carrier fluid. The hydrodynamic interactions in these flows result in rich multiscale physics, such as clustering and pseudo-turbulence, with important practical implications. Theoretical formulations to represent, explain and predict these phenomena encounter peculiar challenges that multiphase flows pose for classical statistical mechanics. A critical analysis of existing approaches leads to the identification of key desirable characteristics that a formulation must possess in order to be successful at representing these physical phenomena. The need to build accurate closure models for unclosed terms that arise in statistical theories has motivated the development of particle-resolved direct numerical simulations (PR--DNS) for model-free simulation at the microscale. A critical perspective on outstanding questions and potential limitations of PR-DNS for model development is provided. Selected highlights of recent progress using PR-DNS to discover new multiphase flow physics and develop models are reviewed. Alternative theoretical formulations and extensions to current formulations are outlined as promising future research directions. The article concludes with a summary perspective on the importance of integrating theoretical, modeling, computational, and experimental efforts at different scales. This article is based on an invited talk given at the 2019 Annual Meeting of the American Physical Society's Division of Fluid Dynamics in Seattle, WA.
has issue date	2020-07-23(xsd:dateTime)
bibo:doi	10.13140/rg.2.2.28950.16960
has license	arxiv
sha1sum (hex)	597edcce0e8f3a66ab7a373b1d3c650cd67c865e
schema:url	https://doi.org/10.13140/rg.2.2.28950.16960
resource representing a document's title	Multiphase Flows: Rich Physics, Challenging Theory, and Big Simulations
resource representing a document's body	covid:597edcce0e8f3a66ab7a373b1d3c650cd67c865e#body_text
is schema:about of	named entity 'possess' named entity 'carrier' named entity 'experimental' named entity 'discover' named entity 'rich' »more»

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