Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Print this page

How to save a bad element with weak boundary conditions
Hanert, E.; Legat, V. (2006). How to save a bad element with weak boundary conditions. Comput. fluids 35(5): 477-484.
In: Computers & Fluids. Elsevier: New York. ISSN 0045-7930; e-ISSN 1879-0747, more
Peer reviewed article  

Available in  Authors 


Project Top | Authors 
  • Second-generation Louvain-la-Neuve Ice-ocean Model, more

Authors  Top 

    The P1P1 finite element pair is known to allow the existence of spurious pressure (surface elevation) modes for the shallow water equations and to be unstable for mixed formulations. We show that this behavior is strongly influenced by the strong or the weak enforcement of the impermeability boundary conditions. A numerical analysis of the Stommel model is performed for both P1P1 and View the MathML sourceP1 mixed formulations. Steady and transient test cases are considered. We observe that the P1P1 element exhibits stable discrete solutions with weak boundary conditions or with fully unstructured meshes.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors