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.
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November 2015
Research-Article
A Model Constraint for Polydisperse Solids in Multifluid Flows
Kelly Knight
Kelly Knight
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Michael P. Kinzel
Leonard Joel Peltier
Brigette Rosendall
Mallory Elbert
Andri Rizhakov
Jonathan Berkoe
Kelly Knight
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received November 17, 2014; final manuscript received May 28, 2015; published online July 10, 2015. Assoc. Editor: Francine Battaglia.
J. Fluids Eng. Nov 2015, 137(11): 111104 (11 pages)
Published Online: July 10, 2015
Article history
Received:
November 17, 2014
Revision Received:
May 28, 2015
Citation
Kinzel, M. P., Peltier, L. J., Rosendall, B., Elbert, M., Rizhakov, A., Berkoe, J., and Knight, K. (July 10, 2015). "A Model Constraint for Polydisperse Solids in Multifluid Flows." ASME. J. Fluids Eng. November 2015; 137(11): 111104. https://doi.org/10.1115/1.4030762
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