e/Velocity potential

Information
has gloss	eng: A velocity potential is used in fluid dynamics, when a fluid occupies a simply-connected region and is irrotational. In such a case, : \nabla \times \mathbfu} =0, where \mathbfu} denotes the flow velocity of the fluid. As a result, \mathbfu} can be represented as the gradient of a scalar function \Phi\;: : \mathbfu} = \nabla \Phi\;, \Phi\; is known as a velocity potential for \mathbfu}.
lexicalization	eng: Velocity Potential
instance of	c/Equations of fluid dynamics