Symmetry-breaking natural convection of water in an infinite vertical channel maintained at different temperatures

Woongki Kang, Changhoon Lee

Research output: Contribution to journalArticlepeer-review


The transition to chaos in natural convection in a water layer between two differentially heated infinite vertical plates is investigated using direct numerical simulation under the Boussinesque approximation. After the primary instability of the base flow in the conduction regime at Rayleigh number Rac ∼ 58,000, a sequence of bifurcations leading to unsteady three-dimensional flow follow, and the flow eventually becomes chaotic at approximately 2Rac. In particular, at 6Rac, the symmetry between the upward flow near the hot wall and the downward flow near the cold wall breaks, and either the upward or downward flow appears with intermittent transition between them. As the Rayleigh number increases, the asymmetry increases and the transition between the upward and downward flows becomes less frequent, and only one of these two flows persists with net flow in one direction.

Original languageEnglish
Article number106100
JournalInternational Communications in Heat and Mass Transfer
Publication statusPublished - 2022 Jun

Bibliographical note

Funding Information:
This research was supported by the Samsung Science & Technology Foundation under Project Number SSTFBA1702–03 .

Publisher Copyright:
© 2022 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Chemical Engineering(all)
  • Condensed Matter Physics


Dive into the research topics of 'Symmetry-breaking natural convection of water in an infinite vertical channel maintained at different temperatures'. Together they form a unique fingerprint.

Cite this