However, potential flows also have been used to describe compressible flows.

Potential flow theory can also be used to model irrotational compressible flow.

This concept can then be extended to write the Favre-filtered momentum equation for compressible flow.

As a result, pressure coefficients can be greater than one in compressible flow.

There are two approaches to adapting the model for compressible flows.

The incompressibility assumption is not required, but compressible flows are more difficult to work with and less common in chemical processes.

Friction has a similar effect as an area change on compressible flow.

(For compressible flows, these authors use the concept of impact pressure.)

However, some British authors extend their definition of dynamic pressure to include compressible flows.

The techniques are related to her prior work on compressible flows.