Flow topology in an L-shaped cavity with lids moving in the same directions


DELİCEOĞLU A., Bozkurt D., Celik E.

MATHEMATICAL METHODS IN THE APPLIED SCIENCES, cilt.43, sa.15, ss.8317-8326, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 43 Konu: 15
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1002/mma.5972
  • Dergi Adı: MATHEMATICAL METHODS IN THE APPLIED SCIENCES
  • Sayfa Sayıları: ss.8317-8326

Özet

Flow development and eddy structure in an L-shaped cavity with lids moving in the same directions have been investigated using both tools from topological and numerical methods. In particular, structural bifurcation near a nonsimple degenerate point is investigated by making a local analysis of the velocity field based on a Taylor series expansion. The streamlines of a Hamiltonian vector field system are simplified by using the homotopy invariance of the index theory. A series of bifurcation curves are constructed to determine the sequence of flow structures by which eddies are generated in the L-shaped cavity.