Adiabatic flow of a perfect gas in a cylindrical pipe
Fluid mechanics-One-dimensionnal compressible flow

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Adiabatic flow of a perfect gas in a cylindrical pipe
Fluid mechanics-One-dimensionnal compressible flow

Author : André LALLEMAND

Review date: January 4, 2020 | Lire en français

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3. Adiabatic flow of a perfect gas in a cylindrical pipe

This adiabatic flow, which does not respect the evolution of the cross-section Ω of an isentropic flow, is essentially irreversible. It is extremely common in practice, and is known as Fanno flow.

3.1 Fanno flow equations

The general equations, applied to this particular case, can be written as follows.

Continuity (2) :

ρ1  v1=ρ2  v2=
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