Adaptive implicit/explicit finite element methods for axisymmetric viscous turbulent flows with moving boundaries

The extension of the two-dimensional adaptive implicit/explicit finite element method to axisymmetric turbulent flow problems is presented. Difficulties involved in the selection of proper flow variables for the finite element interpolation to avoid singularities and the treatment of complex source...

Full description

Saved in:
Bibliographic Details
Published inComputer methods in applied mechanics and engineering Vol. 97; no. 2; pp. 245 - 288
Main Authors Tworzydlo, W.W., Huang, C.Y., Oden, J.T.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 1992
Elsevier
Subjects
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
General theory
Physics
Finite element method
Compressible fluid
Fluid mechanics
Turbulent flow
Viscous fluid
Boundary condition
Adaptive method
Online AccessGet full text

Cover

More Information
Summary:The extension of the two-dimensional adaptive implicit/explicit finite element method to axisymmetric turbulent flow problems is presented. Difficulties involved in the selection of proper flow variables for the finite element interpolation to avoid singularities and the treatment of complex source terms resulting from the axisymmetric formulation are covered in this study. A special data structure is proposed for efficiently implementing the Prandtl-Van Driest turbulence model with an implicit/explicit algorithm for adapted unstructured grids. In addition, a moving-grid/eroding-boundary algorithm is implemented (specifically, for modeling the burning of a solid propellant) for internal flow analysis in solid rocket motors. A series of benchmark problems are solved to demonstrate the effectiveness of the methodology.
ISSN:0045-7825
1879-2138
DOI:10.1016/0045-7825(92)90166-H