Flow behavior of UCM viscoelastic fluid in sudden contraction channel

Autor:	Hongliang Zhou, Haimei Jiang, Huiying Zhong, Hongjun Yin, Chunquan Fu
Rok vydání:	2010
Předmět:	Physics::Fluid Dynamics Finite volume method Classical mechanics Discretization Constitutive equation Weissenberg number Upwind scheme Boundary value problem Mechanics Contraction (operator theory) Viscoelasticity Mathematics
Zdroj:	Natural Science. :780-785
ISSN:	2150-4105 2150-4091
DOI:	10.4236/ns.2010.27098
Popis:	A finite volume method for the numerical solution of viscoelastic flows is given. The flow of a differential upper-convected Maxwell (UCM) fluid through a contraction channel has been chosen as a prototype example. The conservation and constitutive equations are solved using the finite volume method (FVM) in a staggered grid with an upwind scheme for the viscoelastic stresses and a hybrid scheme for the velocities. An enhanced-in-speed pressure-correction algorithm is used and a method for handling the source term in the momentum equations is employed. Improved accuracy is achieved by a special discretization of the boundary conditions. Stable solutions are obtained for higher Weissenberg number (We), further extending the range of simulations with the FVM. Numerical results show the viscoelasticity of polymer solutions is the main factor influencing the sweep efficiency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ea0ac45d4802e6560b0d56c0e497b23b https://doi.org/10.4236/ns.2010.27098 Zobrazit plný text záznamu