Compressible and nonisothermal viscoelastic flow between eccentrically rotating cylinders

Autor:	Timothy Nigel Phillips, A. T. Mackay
Rok vydání:	2021
Předmět:	Fluid Flow and Transfer Processes Physics Constitutive equation General Engineering Computational Mechanics Mechanics Elasticity (physics) Condensed Matter Physics Compressible flow Viscoelasticity Finite element method Unstructured grid Physics::Fluid Dynamics Compressibility Galerkin method
Zdroj:	Theoretical and Computational Fluid Dynamics. 35:731-756
ISSN:	1432-2250 0935-4964
DOI:	10.1007/s00162-021-00582-y
Popis:	A Taylor–Galerkin finite element time marching scheme is derived to numerically simulate the flow of a compressible and nonisothermal viscoelastic liquid between eccentrically rotating cylinders. Numerical approximations to the governing flow and constitutive equations are computed over a custom refined unstructured grid of piecewise linear Galerkin finite elements. An original extension to the DEVSS formulation for compressible fluids is introduced to stabilise solutions of the discrete problem. The predictions of two models: the extended White–Metzner and FENE-P-MP are presented. Comparisons between the torque and load bearing capacity predicted by both models are made over a range of viscoelastic parameters. The results highlight the significant and interacting effects of elasticity and compressibility on journal torque and resultant load, and the stability of the journal bearing system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2cf9d87eeb726679854d4a4a94a2717 https://doi.org/10.1007/s00162-021-00582-y Zobrazit plný text záznamu Plný text ve formátu PDF