jim rozen wrote:

As I said before, you cannot understand compressible gas
flow in systems, using electrical analogies.

Hi Jim,

Mass flow isn't an analogy - its the real thing, and conservation of
mass is real. Mass into the system must equal mass out. There is no
way around that. The rocket engine folks use mass flow all the time.

Mass flow is normally used with gasses (except of course in compressor
specifications!), volume flow with liquids. Thinking of mass flow as
current (its the same in all parts of a series circuit), and pressure
as voltage, the electrical analogy works reasonably well (although the
ideal fluid resistor is nonlinear).

Fitch