Experimental investigation of turbulent patch evolution in spatially steady boundary layers

Authors: Fransson, J. H. M.
Document Type: Conference
Pubstate: Published
Journal: Advances in Turbulence XII, Proc. 12th EUROMECH ETC, Sept. 7-10, 2009, Marburg, Germany
Year: 2009


Turbulent patches and their streamwise evolution play a ma jor rˆole in the late stage of any transition scenario. The appearance of turbulent patches in laminar boundary layers was ?rst noted by Emmons [1], who proposed a turbulent spot probability appearance model, which recently [2] has proven to work well for the free stream turbulence (FST) induced transition scenario. However, there are many fundamental questions still remaining unanswered, which are important in the striving after new transition prediction models.