Consider a propeller surrounded by a Control Volume, as shown in Fig. 2. If we wish to calculate the

thrust generated by the propeller by applying the Linear Momentum theorem, then we would need to

know the following data:

If one substitutes mass (M) for the extensive property B in the generic control volume equation

shown below:

then gets:

Consider the fluid having a uniform velocity V, flowing into the cylindrical tube with the cross

section area A, as shown in Fig. 6. The volumetric flow rate (Q) inside the tube can be calculated from:

The linear momentum theory is based on the conservation of:

Consider the flow depicted in Figure 2 below. If the flow is incompressible, then the velocity

variation of a particle moving along the streamline going through point A will follow the curve indicated

by:

A Canadian flag on top of a tower is blown by the wind as shown in Fig. 4. The wind speed is

constant and uniform, but the flag is “waving”, i.e. it exhibits a wavy motion. As such, it essentially

visualizes the flow behind the flag pole. In this case, the flow behind the flag pole is:

Fig. 3 below shows a boundary layer. Note that the edge of the boundary layer is shown by the

dashed line. In which portion of Fig. 3 is the flow uniform?

If we take a picture of the path of the ink, which we continuously inject into a river at a certain

point - at a location where the flow direction is varying with time - then we essentially record the:

For the wind turbine shown on Fig. 1, the Bernoulli Equation can be used between points:

A streamline is defined as: