Article | REF: RE85 V1

Delaying the transition to turbulence

Author: Carlo COSSU

Publication date: July 10, 2007

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


Français

5. Transition period

After the first two experimental campaigns in 2003 and 2004, it was time to ask the essential question: can we delay the transition to turbulence in the "classical" scenario by forcing streaks into the boundary layer? The fact that linear Tollmien-Schlichting waves are stabilized by streaks is a necessary condition for controllability, but not a sufficient one. The transition itself is triggered by the secondary instability of TS waves. In the absence of streaks, this secondary instability manifests itself when the rms value of the TS waves reaches an amplitude of the order of 1% U∞. There is no a priori guarantee that the presence of streaks does not significantly lower this secondary threshold by compensating for the effect of linear stabilization, and that therefore region (3) in figure

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Physics of energy

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Transition period