Reverse Venturi
Reverse Venturi
(OP)
ALL,
Does anyone know of a device that can act as a reverse venturi, so that the pressure increases and the velocity decreases. I know of air ejectors and steam ejectors but I need for this to happen with nothing being introduced into the flow, or at least it being a catalyst and not seeing it at the end flow.
Any help would be much appreciated!
Regards
Does anyone know of a device that can act as a reverse venturi, so that the pressure increases and the velocity decreases. I know of air ejectors and steam ejectors but I need for this to happen with nothing being introduced into the flow, or at least it being a catalyst and not seeing it at the end flow.
Any help would be much appreciated!
Regards





RE: Reverse Venturi
RE: Reverse Venturi
So what your saying is the cone leading to the venturi orifice is decreasing pressure and increasing velocity but then when you come out of the orifice the flow begins to have pressure increase and velocity decrease?
RE: Reverse Venturi
RE: Reverse Venturi
Thanks for your help again.
RE: Reverse Venturi
RE: Reverse Venturi
But pressure increases of the magnitude you are seeking are not in the cards. Do the analysis!
RE: Reverse Venturi
I'm not sure what you are asking. According to Bernoulli, Pressure WILL increase as velocity decreases. A simple pipe reducer (installed as an expander) achieves this effect. Of course, this simplistic approach is not very efficient, and you will have hydraulic losses. In theory, with an efficient nozzle, the final pressure achievable would be the total fluid pressure = static pressure + dynamic pressure at the nozzle's outlet.
Doug