AP_Physics_B_-_Fluid_Dynamics

# AP_Physics_B_-_Fluid_Dynamics - FluidDynamics AP Physics B...

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Fluid Dynamics AP Physics B

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Fluid Flow Up till now, we have pretty much focused on fluids at rest. Now let's look at fluids in motion It is important that you understand that an IDEAL FLUID: Is non viscous (meaning there is NO internal friction) Is incompressible (meaning its Density is constant) Its motion is steady and NON – TURBULENT A fluid's motion can be said to be STREAMLINE, or LAMINAR. The path itself is called the streamline. By Laminar, we mean that every particle moves exactly along the smooth path as every particle that follows it. If the fluid DOES NOT have Laminar Flow it has TURBULENT FLOW in which the paths are irregular and called EDDY CURRENTS.
Mass Flow Rate A A v v L L Consider a pipe with a fluid moving within it. The volume of the blue region is the AREA times the length. Length is velocity times time Density is mass per volume Putting it all together you have MASS FLOW RATE.

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What happens if the Area  changes? A 1 A 2 v 1 v 2 L 1 =v 1 t L 2 =v 2 t The first thing you MUST understand is that MASS is NOT CREATED OR DESTROYED! IT IS CONSERVED.
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AP_Physics_B_-_Fluid_Dynamics - FluidDynamics AP Physics B...

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