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A multidimensional positive definite remapping for Lagrangian solutions of the Noh problem

✍ Scribed by Ryan N. Hill; Joanna Szmelter

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
676 KB
Volume
46
Category
Article
ISSN
0045-7930

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✦ Synopsis

A remapping based on the multidimensional positive definite advection transport algorithm (MPDATA), implemented for ALE methods, is used to model the Noh problem. Typical solutions in the Lagrangian reference frame contain heating errors which arise during the simulation of a shock reflection originating at a wall. The paper shows that the inherent properties of MPDATA can be exploited in the remapping to reduce wall heating errors. The resulting increase in accuracy and symmetry of solutions is demonstrated.

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