Streamwise scaling of streaks in laminar boundary layers subjected to free-stream turbulence
2004 (English)In: Physics of fluids, ISSN 1070-6631, E-ISSN 1089-7666, Vol. 16, no 5, 1814-1817 p.Article in journal (Refereed) Published
A flat plate laminar boundary layer subjected to free-stream turbulence, generated by grids upstream of the leading edge, has been studied. Correlations between a wall wire and a hot wire in the boundary layer have been obtained. The hot wire has been traversed to 328 positions for each of the five wall-wire positions studied. The length, height, and width of the correlation distributions is seen to increase in the downstream direction being self-similar in coordinates scaled with the boundary-layer length scale. The propagation speeds of the structures are obtained from the data and its variation in the streamwise and wall-normal directions is found to agree with what is obtained from a simple kinematic model.
Place, publisher, year, edition, pages
2004. Vol. 16, no 5, 1814-1817 p.
IdentifiersURN: urn:nbn:se:kth:diva-13098DOI: 10.1063/1.1683170ISI: 000220832600054ScopusID: 2-s2.0-2442706346OAI: oai:DiVA.org:kth-13098DiVA: diva2:320848
QC 201005272010-05-272010-05-272010-05-27Bibliographically approved