Barnacle-type roughness can be considered as a hybrid form of roughness that combines some of the topographical features of traditional regular rough surfaces composed of discrete roughness elements of uniform size and shape, and of irregular rough surfaces that exhibit features with a wide distribution of sizes and shapes, covering the surface with a random areal distribution.
Sotirios Sarakinos (University of Glasgow) and Angela Busse (University of Glasgow) sit down with the Physical Review Journal Club to discuss their research recently published in Physical Review Fluids investigating the influence of barnacle-type rough surfaces with increasing coverage on wall-bounded turbulence. In their direct numerical simulations of turbulent channel flow, the rough surfaces were generated with an algorithm that mimics the settlement behavior of barnacles, and the set of seven different surfaces that describe the evolution of barnacle fouling with increasing coverage ranged from a lightly fouled surface with small isolated barnacle clusters (10% coverage) to a surface that is fully covered by barnacles (85% coverage).
Sarakinos and Busse will give a presentation recounting their methods and data from their simulation, followed by a live question-and-answer session where all participant questions will be answered. This session will be moderated by Phys. Rev. Fluids Editorial Board Member, Adrian Lozano Duran, Massachusetts Institute of Technology.
Registration is free and a recording of the event will be provided to all registrants.