Title
A Semi-implicit Relaxation Scheme for Modeling Two-Phase Flow in a Pipeline
Abstract
This work is devoted to the numerical approximation of the solutions to the system of conservation laws which arises in the modeling of two-phase flows in pipelines. The PDEs are closed by two highly nonlinear algebraic relations, namely, a pressure law and a hydrodynamic law. We have previously proposed an explicit relaxation scheme which allows us to cope with these nonlinearities. But the system considered has eigenvalues which are of very different orders of magnitude, which prevents the explicit scheme from being effective, since the time step has to be very small. In order to solve this effectiveness problem, we now proceed to construct a scheme which is explicit with respect to the small eigenvalues and linearly implicit with respect to the large eigenvalues. Numerical evidences are provided.
Year
DOI
Venue
2005
10.1137/030601624
SIAM J. Scientific Computing
Keywords
Field
DocType
large eigenvalues,two-phase ∞ows,modeling two-phase flow,different order,relaxation scheme,conservation law,semi-implicit,semi-implicit relaxation scheme,explicit relaxation scheme,hydrodynamic law,riemann solvers,pressure law,numerical evidence,small eigenvalues,numerical approximation,explicit scheme,two phase flow,thermodynamics,acoustic waves,eigenvalues,mass transport,riemann solver
Mathematical optimization,Nonlinear system,Mathematical analysis,Relaxation (iterative method),Numerical analysis,Partial differential equation,Two-phase flow,Eigenvalues and eigenvectors,Mathematics,Conservation law,Riemann solver
Journal
Volume
Issue
ISSN
27
3
1064-8275
Citations 
PageRank 
References 
7
0.88
1
Authors
3
Name
Order
Citations
PageRank
Michael Baudin1275.34
Frédéric Coquel27213.53
Quang-Huy Tran3213.52