Irrotational Wave 2
Irrotational Wave 2 : A wave with fluid particles that do not revolve around an axis through their center, although the particles themselves may travel in circular or nearly circular orbits. Irrotational waves may be progressive, standing, oscdlatory, or translatory. For example, the Airy, Stokes, cnoidal and solitary wave theories describe irrotational waves. See trochoidal wave