Consider the steady laminar flow through the annular space formed by two coaxial tubes. The radius of the inner tube is R1, and one of the outer tubes is R2. The flow is along the axis of the tubes and is maintained by a pressure gradient dp/dx, where the x-direction is taken along the axis of the tubes. (a) Find the velocity profile, u(r). (b) Find the radius at which the maximum velocity is reached, and the stress distribution

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Fluid Dynamics

The study of the flow of gases and liquids, usually in and around solid surfaces, is known as fluid dynamics in physics and engineering. Fluid dynamics, for example, can be used to evaluate the movement of air through an airplane wing or the surface of a vehicle. It can also be used in ship design to increase the speed at which ships pass through water.