Problem:
Imagine you are a fluid molecule traveling on a streamline. Explain the factors that could cause you to accelerate/decelerate for the following situations.
a. Laminar flow in a uniform diameter pipe.
b. Laminar flow through a pipe with a reduction to one-half the original diameter.
c. Laminar flow through the pore space of a porous rock.
Note: Please provide reasons to support your answer.