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15 mins
chaotic self-sustaining turbulent-laminar interface in two-dimensional channel flow
Toshiki Teramura, Sadayoshi Toh
Session: Instability and Transition 3
Session starts: Wednesday 26 August, 10:30
Presentation starts: 10:30
Room: Room A

Toshiki Teramura (Graduate School of Science, Kyoto University, Japan)
Sadayoshi Toh (Graduate School of Science, Kyoto University, Japan)

Another type of self-sustainable coherent structures is found in a two-dimensional channel flow. It is embedded in a turbulent-laminar interface, so it utilizes the inhomogeneity to keep alive. Its spatio-temporally chaotic behavior and sustaining mechanism are investigated using the filtered simulation. This is an example of inhomogeneity induced coherent structures, which will be necessary to understand the spatio-temporal intermittency in three-dimensional turbulent systems.