What are the characteristics and applications of irrotational flow in fluid dynamics?

Irrotational flow in fluid dynamics is characterized by the absence of vorticity, meaning the fluid particles do not rotate as they move. This type of flow is often used to model the behavior of ideal fluids, such as air or water in certain conditions. Irrotational flow is commonly applied in aerodynamics, hydrodynamics, and the study of fluid motion around objects like aircraft wings or ships.