Consistent hybrid finite volume/element formulations: model and complex viscoelastic flows
نویسندگان
چکیده
منابع مشابه
Consistent Hybrid Finite Volume/Element Formulations: Model and Complex Viscoelastic Flows
The accuracy and consistency of a new cell-vertex hybrid finite element/volume scheme are investigated for viscoelastic flows. Finite element discretisation is employed for the momentum and continuity equation, with FV applied to the constitutive law for stress. Here, the interest is to explore the consequences of utilizing conventional cell-vertex methodology for an Oldroyd-B model and to demo...
متن کاملFast solvers for EVSS formulations of viscoelastic flows
Numerical simulations of viscoelastic flow problems require the solution of large, typically sparse, systems of equations which inherit the (highly) nonlinear coupling of the original PDE model. Recent approaches, such as the elastic viscous split stress (EVSS) methods, while allowing more flexibility and the treatment of complex rheological models come at the cost of increased problem size. At...
متن کاملA Second-order Hybrid Finite Element/Volume Method for Viscoelastic Flows
A second-order accurate cell-vertex nite volume/ nite element hybrid scheme is proposed. A nite volume method is used for the hyperbolic stress equations and a nite element method for the balance equations. The nite volume implementation incorporates the recent advancement on uctuation distribution schemes for advection equations. Accuracy results are presented for a pure convection problem, fo...
متن کاملDevelopment of an optimal hybrid finite volume/element method for viscoelastic flows
A cell-vertex hybrid finite volume/element method is investigated that is implemented on triangles and applied to the numerical solution of Oldroyd model fluids in contraction flows. Particular attention is paid to establishing high-order accuracy, while retaining favourable stability properties in reaching high levels of elasticity. The main impact of this study reveals that switching from qua...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal for Numerical Methods in Fluids
سال: 2004
ISSN: 0271-2091,1097-0363
DOI: 10.1002/fld.723