English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Premixed flames propagating in horizontal tubes are observed to take on shapeconvex towards the fresh mixture, which is commonly explained as a buoyancyeffect. A recent rigorous analysis has shown, on the contrary, that thisprocess is driven by the balance of vorticity generated by a curved flame frontwith the baroclinic vorticity, and predicted existence of a regime in which theleading edge of the flame front is concave. We report first experimentalrealization of this regime. Our experiments on ethane and n-butane mixtureswith air show that flames with an inflection point on the front are regularlyproduced in lean mixtures, provided that a sufficiently weak ignition is used.The observed flame shape perfectly agrees with the theoretically predicted.

Effect of vorticity flip-over on the premixed flame structure: First experimental observation of type I inflection flames