Liquid-infused surfaces as a passive method of turbulent drag reduction
MK Fu, I Arenas, S Leonardi, M Hultmark
JOURNAL OF FLUID MECHANICS | CAMBRIDGE UNIV PRESS | Published : 2017
Liquid-infused surfaces present a novel, passive method of turbulent drag reduction. Inspired by the Nepenthes Pitcher Plant, liquid-infused surfaces utilize a lubricating fluid trapped within structured roughness to facilitate a slip at the effective surface. The conceptual idea is similar to that of superhydrophobic surfaces, which rely on a lubricating air layer, whereas liquid-infused surfaces use a preferentially wetting liquid lubricant to create localized fluid-fluid interfaces. Maintaining the presence of these slipping interfaces has been shown to be an effective method of passively reducing skin friction drag in turbulent flows. Given that liquid-infused surfaces have only recently..View full abstract
Awarded by Office of Naval Research (ONR) Multidisciplinary University Research Initiative (MURI)
The authors are thankful to all of the former and current members of the ONR MURI SLIPS team, especially to T. V. Buren, Professor H. Stone and Professor A. Smits for their insight and discussions. This work was supported under Office of Naval Research (ONR) Multidisciplinary University Research Initiative (MURI) grants N00014-12-0875 and N00014-12-1-0962, Program Manager Dr K.-H. Kim. This work was also supported, in part, by the Department of Defense (DoD) through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program. The numerical simulations were performed on the Texas Advanced Computing Center (TACC) and through the DOD High Performance Computing Modernization Program.