Optimization of Drag Reduction Using BioInspired Surface Textures in Subsonic Flow

Abstract

This research produced an adaptable Drag-Reducing (DR) surface via biomimetic buildings, motivated by dolphins' extensible skin and the lotus leaves' hydrophobic properties. The concept integrates a longitudinal groove foundation with hydrophobic flexible substances, using a hydraulic actuator for dynamic surface changing. This method successfully incorporates non-smooth buildings, adaptable substrates, and hydrophobic DR methods, attaining a DR of up to 29% at a Subsonic Flow (SSF) speed of 0.3 m/s. This technological innovation successfully approaches DR across diverse SSF speeds in intricate underwater settings.