A Model Constraint for Polydisperse Solids in Multifluid Flows

Michael P. Kinzel, Leonard Joel Peltier, Brigette Rosendall, Mallory Elbert, Andri Rizhakov, Jonathan Berkoe, Kelly Knight

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

A method to assess computational fluid dynamics (CFD) models for polydisperse granular solids in a multifluid flow is developed. The proposed method evaluates a consistency constraint, or a condition that an Eulerian multiphase solution for a monodisperse material in a single carrier fluid is invariant to an arbitrary decomposition into a pseudo-polydisperse mixture of multiple, identical fluid phases. The intent of this condition is to develop tests to assist model development and testing for multiphase fluid flows. When applied to two common momentum exchange models, the constraint highlights model failures for polydisperse solids interacting with a multifluid flow. It is found that when inconsistency occurs at the algebraic level, model failure clearly extends to application. When the models are reformulated to satisfy the consistency constraint, simple tests and application-scale simulations no longer display consistency failure.

Original languageEnglish (US)
Article number111104
JournalJournal of Fluids Engineering, Transactions of the ASME
Volume137
Issue number11
DOIs
StatePublished - Nov 1 2015

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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