Turbulent flow actually decreases drag compared to laminar flow for a bluff (i.e., not streamlined) body because it reduces the size of the wake. A good swimmer tries to be streamlined, but we're still not exactly an airfoil!
Turbulent flow actually decreases drag compared to laminar flow for a bluff (i.e., not streamlined) body because it reduces the size of the wake. A good swimmer tries to be streamlined, but we're still not exactly an airfoil!