Abstract
Fanno flow has been considered as an example of a model for pneumatic internal flows. In this paper we present simple methods for calculating approximate characteristics for the Fanno flow in consideration of the dependency of the friction factor on the Reynolds number. We also proposed a simulation method for obtaining a conductance related to a ratio of total pressures at both ends of tubes. The usefulness of the simulation is shown by comparing the simulated results with the experimental results. It was confirmed that the flow characteristics could be estimated from the physical constants of a fluid, geometrical values of tubes and boundary conditions.
