Effects of different geometries on boundary layer transition

Dinesh Bhatia, Guangjun Yang, Jing Sun, Jian Wang, Peter Barrington, Huaxing Li

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)


The aspect ratio of the leading edges is crucial for wind tunnel test. However, manufacturing of high aspect ratio samples could be very time consuming and extremely expensive. Experimental and computational investigation has been carried out on transitional boundary layers subjected to changes in the leading edge geometry. The aspect ratio of the elliptical leading edges was changed and its impact on boundary layertransition was observed. The displacement thickness, shape factor, skin friction coefficient and the pressure gradient were plotted to study the impact of each leading edge. The impact of the curvature of the elliptical leading edges was also documented. The data shows that as the aspect ratio increases transition onset gets delayed. Conditional results are presented that indicate that the gradient and the curvature of the leading edge plays a significant role in influencing the transition onset location. The presence of a higher aspect ratio leading edge reduces the turbulent spot propagation rate which is one of the primary causes of boundary layer transition.

Original languageEnglish
Title of host publication54th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103933
Publication statusPublished - 2016
Externally publishedYes
Event54th AIAA Aerospace Sciences Meeting, 2016 - San Diego, United States
Duration: 4 Jan 20168 Jan 2016

Publication series

Name54th AIAA Aerospace Sciences Meeting


Conference54th AIAA Aerospace Sciences Meeting, 2016
Country/TerritoryUnited States
CitySan Diego

ASJC Scopus subject areas

  • Aerospace Engineering


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