Experimental investigations of liquid-infused surface robustness under turbulent flow
Matthew K Fu, Ting-Hsuan Chen, Craig B Arnold, Marcus Hultmark
Experiments in Fluids | Springer (part of Springer Nature) | Published : 2019
Liquid-infused surfaces present a novel coating for passive drag reduction in turbulent flows. Conceptually similar to superhydrophobic surfaces, which are composed of air pockets trapped within hydrophobic roughness, liquid-infused surfaces instead rely on a preferentially wetting, liquid lubricant to create a heterogeneous surface of fluid–solid and fluid–fluid interfaces. The mobility of the lubricant within the textures allows the fluid–fluid interfaces to support a finite interfacial slip velocity. In the proper configuration, the collection of slipping interfaces can result in a significant reduction in skin friction drag. However, sustaining this drag reduction is predicated on mainta..View full abstract
Awarded by Office of Naval Research (ONR) Multidisciplinary University Research Initiative (MURI)
This work was supported under the Office of Naval Research (ONR) Multidisciplinary University Research Initiative (MURI) Grants N00014-12-0875 and N00014-12-1-0962, Program Manager Dr. Ki-Han Kim. M. K. Fu was also supported, in part, by the Department of Defense (DoD) through the National Defense Science and Engineering Graduate Fellowship (NDSEG) Program.