Efficient and error minimized coupling procedures for unstructured and moving meshes

• We present a methodology for automatic generation and optimization of interpolation operators for the coupling of general non-collocated and/or moving numerical interfaces. The discrete equations are solved in a method-of-lines fashion by assuming volume preserving mesh motions. Interface interpolation errors are minimized effectively in a global least-squares sense, while satisfying strict stability conditions. The proposed automatic interface procedure is both more versatile and more accurate compared to previous techniques. We apply the new method to interfaces between hybrid meshes undergoing relative rigid body motion, demonstrating the stability, conservation and superior accuracy.

Ämnesord

NATURVETENSKAP  -- Matematik -- Beräkningsmatematik (hsv//swe)

NATURAL SCIENCES  -- Mathematics -- Computational Mathematics (hsv//eng)

NATURVETENSKAP  -- Matematik (hsv//swe)

NATURAL SCIENCES  -- Mathematics (hsv//eng)

Nyckelord

Numerical interfaces

Moving meshes

Sliding meshes

Summation-by-parts

Stability

Conservation

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)