Final answer:
Flow between two pneumatic connections in a system happens due to difference in pressure, and its nature is determined by the Reynolds number, being laminar for values below 2000 and turbulent for values above 3000.
Step-by-step explanation:
Flow occurs between two pneumatic connections in a pneumatic system as a result of differential pressure. The equation P2 - P1 = RQ helps explain this, where P2 and P1 are the pressures at two points, R is the resistance to flow, and Q is the flow rate. When P2 is greater than P1, flow is caused from point 2 to point 1. These principles also relate to hydraulic systems where a force applied on a piston creates a change in pressure resulting in flow.
Furthermore, it's important to understand different types of flow. For instance, a Reynolds number (NR) below about 2000 indicates laminar (smooth) flow, while an NR above about 3000 indicates turbulent (chaotic) flow.
To recap, flow between two pneumatic connections in a pneumatic system is driven by differential pressure, and the nature of that flow – whether laminar or turbulent – can be determined by calculating the Reynolds number.
Learn more about Pneumatic Flow