The discussion centers on the impact of surface properties, specifically hydrophobicity, on the drag coefficient (CD) of a cylindrical object submerged in water. Participants explore whether a completely hydrophobic surface would significantly alter the drag compared to normal skin drag, particularly for an object with a 7:1 length-to-diameter ratio. The consensus indicates that the transition from normal skin drag to hydrophobic drag can lead to measurable differences in drag performance, particularly in streamlined shapes.
PREREQUISITESEngineers, fluid dynamics researchers, and marine designers interested in optimizing drag performance for submerged objects.
Vanselena said:If the surface was completely hydrophobic vs normal skin drag? If it changed would it be significant in an object with a 7:1 ratio?
Thank you for your responses!