Volume 76, Number 3, November 2006
|Page(s)||429 - 435|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||11 October 2006|
Shear-thickening induced by Faraday waves in dilute wormlike micelles
Centre de Recherche Paul Pascal - Avenue Schweitzer, 33600 Pessac, France
Corresponding author: firstname.lastname@example.org
Accepted: 15 September 2006
We investigate the effect of surface waves generated by the Faraday instability on a shear-thickening surfactant solution under vertical vibrations. We show that a prolonged oscillation of the surface above the instability onset leads to an increase of the fluid viscosity. This phenomenon is evidenced by comparing the time needed for the instability to develop in the fluid at rest and once the fluid has been shaken above onset: pre-shaking may delay the instability by two orders of magnitude. A simple model based on a time-dependent viscosity is proposed which accounts quantitatively for the experimental observations.
PACS: 47.50.-d – Non-Newtonian fluid flows / 47.20.-k – Flow instabilities / 83.60.Rs – Shear rate-dependent structure (shear thinning and shear thickening)
© EDP Sciences, 2006
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.