We call a flow incompressible when the change in density is less than:

Question

0.3%

1%

5%

10%

Answer 1

In fluid dynamics, a flow is typically considered incompressible when the change in density is less than about 5%. This means that for practical purposes, we can assume the density of the fluid remains constant throughout the flow, which simplifies the analysis of fluid behavior. Thus, the answer is 5%.