A Petrov-Galerkin finite element model for one-dimensional fully non-linear and weakly dispersive wave propagation

2001 ◽  
Vol 37 (5) ◽  
pp. 541-575 ◽  
Author(s):  
Seung-Buhm Woo ◽  
Philip L.-F. Liu
Keyword(s):  
Finite Element ◽  
Wave Propagation ◽  
Finite Element Model ◽  
Element Model ◽  
Dispersive Wave ◽  
Galerkin Finite Element ◽  
One Dimensional ◽  
Non Linear

Finite Element Solution for Wave Propagation in Layered Fluids

1997 ◽  
Vol 05 (04) ◽  
pp. 383-402
Author(s):  
Tony W. H. Sheu ◽  
C. C. Fang
Keyword(s):  
Finite Element ◽  
Wave Propagation ◽  
Finite Element Model ◽  
Element Model ◽  
Analytic Solutions ◽  
Analysis Tool ◽  
Galerkin Finite Element ◽  
Flux Corrected Transport ◽  
Characteristic Finite Element ◽  
Medium Change

A hyperbolic equation is considered for the propagation of pressure disturbance waves in layered fluids having different fluid properties. For acoustic problems of this sort, the characteristic finite element model alone does not suffice to ensure prediction of the monotonic wave profile across fluids having different properties. A flux corrected transport solution algorithm is intended for incorporation into the underlying Taylor–Galerkin finite element framework. The advantage of this finite element approach, in addition to permitting oscillation-free solutions, is that it avoids the necessity of dealing with medium discontinuity. As an analysis tool, the proposed monotonic finite element model has been intensively verified through problems which are amenable to analytic solutions. In modeling wave propagation in layered fluids, we have investigated the influence of the degree of medium change on the finite element solutions. Also, different finite element solutions are considered to show the superiority of using the flux corrected transport Taylor–Galerkin finite element model.

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