On the critical flow of fluids
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Dear sea friends, how do critical flow states of gases and liquids occur? What is the root cause of this?
Oh, are we going to talk about fluid dynamics? There’s a chance to visit the laboratories at Beihang University; there are specialists who conduct experiments on this topic, and the phenomena of laminar flow and turbulent flow are particularly interesting.
It’s not research; it’s learning*. I just can’t figure out why there are limits to the flow rate of liquids and gases What is the principle?
Adhesive force, inertial force, and energy loss during flow. We all learned about the Reynolds number in school, right?
Static electricity is also generated during flow, which is extremely dangerous for flammable and explosive gases. So the flow rate needs to be restricted.
The gas is the pressure after throttling, while the liquid is the liquid pressure behind the valve near its saturated vapor pressure.
There are many different definitions and meanings for the critical flow state of fluids, especially in the case of gas-liquid two-phase flow. It’s not clear which aspect of the critical flow state the original poster is referring to
In simple terms, what is the limit of flow velocity for gases and liquids in pipes?
Such an opportunity is really hard to come by – where’s the chance to get into Beihang University’s laboratories?