Title: Free-surface instabilities in a thixotropic fluid
Description:
Thixotropy is the characteristic of a fluid to form a gelled structure over time when it is not subjected to shearing, and to liquefy when agitated. Thixotropic fluids are commonly used in the construction industry e.g., self-flowing concrete and drilling fluids, and related applications include some forms of mud flows and debris flows. This photo shows some free-surface instabilities (roll waves like) at the end of a basic experimental study of dam break wave with a bentonite suspension down a 15 degree channel [1,2,3]. During the clean up, some fluid was pushed over the arrested thixotropic fluid and formed these instabilities. Credits: Hubert Chanson
References:
[1] CHANSON, H., JARNY, S., and COUSSOT, P. (2006). "Dam Break Wave of Thixotropic Fluid." Journal of Hydraulic Engrg., ASCE, Vol. 132, No. 3, pp. 280-293 (ISSN 0733-9429). {http://espace.library.uq.edu.au/view/UQ:78856} Web Page: http://espace.library.uq.edu.au/view.php?pid=UQ:9437 Contributed By: Hubert Chanson |