The incompressibility assumption is not required, but compressible flows are more difficult to work with and less common in chemical processes.
12.
Two compressible flow phenomenon characterize the flow through these pipelines : friction ( Fanno flow ) and ( Rayleigh flow ) and heat transfer.
13.
In compressible flow the stagnation pressure is equal to total pressure only if the fluid entering the stagnation point is brought to rest isentropically.
14.
For many purposes in compressible flow, the stagnation enthalpy or stagnation temperature plays a role similar to the stagnation pressure in incompressible flow.
15.
Ross Winans placed conical " petticoat pipes " above blastpipes about 1848 Improved understanding of compressible flow encouraged more sophisticated blastpipe and venturi chimney designs.
16.
The Eulerian frame is most useful in a majority of compressible flow problems, but requires that the equations of motion be written in a compatible format.
17.
The "'Prandtl Glauert transformation "'is a mathematical technique which allows solving certain compressible flow problems by incompressible-flow calculation methods.
18.
However, an important class of compressible flows, including the external flow over bodies traveling at high speed, requires at least a 2-dimensional treatment.
19.
These flow regimes are not chosen arbitrarily, but rather arise naturally from the strong mathematical background that underlies compressible flow ( see the cited reference textbooks ).
20.
For compressible flows such as flows of gases or steam, an " expansibility factor " or " expansion factor " is also calculated.
