The effects of the laminar/turbulent boundary layer states on the development of a plane mixing layerThe effect, of the laminar/turbulent boundary layer state on the mean and rms velocities of a developing plane mixing layer, has been investigated. The maximum Ux/nu allowed by the facility was 6.7 x 100.000; the maximum x station surveyed corresponds to approximately 2000 and 700 initial momentum thicknesses for the laminar and turbulent cases respectively. The use of commonly accepted non-dimensional representations of the data confirm (at least) an approximately self-preserving condition. They also suggest that the effects of the laminar/turbulent initial condition persist in the self-preserving region. A direct comparison of the data reveals that the persistence so observed is illusory. An interpretation of the reason for this misunderstanding is advanced.
Document ID
19770051006
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Foss, J. F. (Michigan State University East Lansing, Mich., United States)