For things that are steady, with constant density… we can use Bernoulli’s equation which is…
Where each side of the Bernoulli’s equation is a constant
Main Assumptions
- Steady flow
- Incompressible flow - acceptable if the flow mach number is < 0.3
- Frictionless flow - solid walls introduce friction effects
- Flow with a single streamline - different streamlines may have different Bernoulli constants based on flow conditions
- No shaft work between points
- No heat transfer between points