Ideal fluids Fluid dynamics is very complicated in general (turbulence, vortices, etc.) Consider the simplest case first the Ideal Fluid no" -no flow resistance(no internal friction) incompressible -density constant in space and time Simplest situation: consider streamline A ideal fluid moving with steady flow-velocity at each point in A the flow is constant in time In this case, fluid moves on streamlines Physics 121: Lecture 21, Pg 5Physics 121: Lecture 21, Pg 5 Simplest situation: consider ideal fluid moving with steady flow - velocity at each point in the flow is constant in time In this case, fluid moves on streamlines A1 A2 v1 v2 streamline Ideal Fluids Fluid dynamics is very complicated in general (turbulence, vortices, etc.) Consider the simplest case first: the Ideal Fluid no “viscosity” - no flow resistance (no internal friction) incompressible - density constant in space and time