Bubble drag reduction has been shown to be a promising technique for reducing the in ships, thus emission of pollutants and allowing compliance with new requirements imposed recently this respect. Different searches have conducted publications related technique, an increase interest shown, especially last decade. In context, review experimental work bubble published decade is presented present ...

Long-chained, viscoelastic surfactant solutions (VES) have been widely employed in the oil and gas industry, particularly hydraulic fracturing gravel-packing operations, where turbulence is commonly reached due to high pumping rates. With this motivation, we experimentally investigate turbulent duct flow of an under-studied class wormlike micellar that forms a gel at room temperature. The fluid...

PREMISE OF THE STUDY Intertidal macroalgae must resist extreme hydrodynamic forces imposed by crashing waves. How does frond flexibility mitigate drag, and how does flexibility affect predictions of drag and dislodgement in the field? METHODS We characterized flexible reconfiguration of six seaweed species in a recirculating water flume, documenting both shape change and area reduction as fro...