Figure:Flow rate as a function of the back pressure taken
after Stodola 1927 Steam and Gas Turbines
Romer et al1.38
analyzed the isothermal flow in a nozzle.
It is remarkable that choking was found as
as opposed
to one (1).
In general when the model is assumed to be isothermal the
choking occurs at
.
The concept that the choking point can move from the throat
introduced by1.39
a researcher unknown to this author.
It is very interesting that the isothermal nozzle was proposed by
Romer at el 1955 (who was behind the adviser or the student?).
These researchers were the first ones to realized that choking
can occurs at different Mach
number (
other then the isothermal pipe.
as opposed
to one (1).
In general when the model is assumed to be isothermal the
choking occurs at