The fact that this instability exists means that very soon after a fracture opens fluid flow begins to focus along tiny ripples and build some bigger channels at the expense of others.
In fact, fluid flow - particularly pulses that mimic the effect of a beating heart - is proving crucial for growing replacement arteries in the laboratory.
If we mention this fluid flowing out there, it is occupying more and more space.
"In many engineering applications, one fluid needs to be heated and another cooled, a requirement economically accomplished by a heat exchanger. In double-pipe exchangers, one fluid flows inside the inner pipe, and the other in the annular space between the two pipes"
In this paper, the computer simulation method for fluid flows and Lattice Automata method are studied in detail.