- TL;DR Summary
- I want to discuss an imaginary scenario here where we have a compressible flow flowing through a tube at 0.99 barA pressure and at 300 m/s velocity and that flow is released into 1 barA pressure. Is it possible or not.
In this scenario, we have a compressible flow at 0.99 barA pressure and flowing at 300 m/s velocity and is released into 1 barA pressure. Point is, whether the flow can be released at 1 barA or not at the release pressure is higher than the pressure of the compressible fluid inside the tube. And here is my thought in this regards. The static pressure of the flow may be lower than the release pressure, but it has another pressure and that's the dynamic pressure. At 300 m/s velocity, the dynamic pressure is around 0.7 barA and when that's added to the existing static pressure of the compressible fluid, the total pressure far exceeds the release pressure and the flow can be easily released. For the sake of simplicity, it has been assumed that the tube is frictionless and the static fluid at 1 barA pressure, where this flow is released, is the same and density difference is negligible.