Fluid Mechanics --continuity equation This is for a 300 level fluid mechanics class. "Consider the y-component of the velocity (v) at any cross-section in the entrance region. For simplicity, take the lower half of the pipe; the content of the flow field is going to be symmetric with respect to the center-line. Using the continuity equation and the viscous phenomena taking place in the entrance region, explain the behavior of the v (y-component of the velocity)." The pipe diameter is 0.1 m and is 20 m long. We used Flowlab to find the friction factor for different reynolds numbers 200-1000 (by changing the velocity to get a different reynolds #). I am trying to use (rho)1A1V1 = (rho)2A2V2 to explain this. I am not really sure what the "viscous phenomena" means. Thanks for any help.