Question: 1. Develop a momentum integral equation for steady flow without blowing or suction for use in the entry region of a circular tube. Note that given Eq. is not applicable for this case because it has been assumed that the boundary layer thickness is small relative to the body radius R; in the present case the boundary layer ultimately grows to the centerline of the tube.
2. Develop a boundary-layer integral equation for the diffusion of component} in a multicomponent mixture.