Chaotic self-sustaining turbulent-laminar interface in two-dimensional channel flow

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