Turbulent Taylor-Couette flow over liquid infused surfaces
Abstract
We experimentally study the flow of turbulent water over a textured surface that is impregnated with a second immiscible liquid. Two configurations are studied: (i) a configuration in which the impregnating fluid is contained within the texture, so that the turbulent flow sees a composite liquid/solid surface and (ii) a configuration in which the impregnating fluid overlies the texture. Experiments are performed in turbulent Taylor-Couette flow at a friction Reynolds number around 150. We characterize the impact the liquid infused surfaces have on the skin friction as well as the critical Reynolds number for transition to turbulence. Particular attention is focused on the influence of the texture geometry and length scale as well as the impregnating fluid properties.
This work was supported by the Office of Naval Research under MURI Grant Number N00014-12-1-0875 (Program Director Dr. Ki-Han Kim).- Publication:
-
APS Division of Fluid Dynamics Meeting Abstracts
- Pub Date:
- November 2014
- Bibcode:
- 2014APS..DFDM26010R