A hybrid framework for coupling arbitrary summation-by-parts schemes on general meshes

• We develop a general interface procedure to couple both structured and unstructured parts of a hybrid mesh in a non-collocated, multi-block fashion. The target is to gain optimal computational efficiency in fluid dynamics simulations involving complex geometries. While guaranteeing stability, the proposed procedure is optimized for accuracy and requires minimal algorithmic modifications to already existing schemes. Initial numerical investigations confirm considerable efficiency gains compared to non-hybrid calculations of up to an order of magnitude.

Ämnesord

NATURVETENSKAP  -- Matematik (hsv//swe)

NATURAL SCIENCES  -- Mathematics (hsv//eng)

Nyckelord

Hybrid meshes; Numerical interfaces; Stability; Summation-by-parts; Finite volume; Finite difference

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)