Final answer:
The stream function of a two-dimensional, incompressible flow is given by Q = Av.
Step-by-step explanation:
The stream function of a two-dimensional, incompressible flow can be determined using Bernoulli's equation.
Bernoulli's equation states that the sum on each side of the equation is constant, or the same at any two points in an incompressible, frictionless fluid.
The equation for the stream function is Q = Av, where Q is the flow rate, A is the cross-sectional area of the flow, and v is the velocity of the flow.