Liquid whistle explained

A liquid whistle is a static mixer which passes fluid at high pressure through an orifice and over a blade.^[1] This subjects the fluid to high turbulence and may result in mixing or emulsification.^{[2] [3]}

Notes and References

1. Ryan. David. Simmons. Mark. Baker. Michael. 2017. Determination of the flow field inside a Sonolator liquid whistle using PIV and CFD. Chemical Engineering Science. 163. 123–136. 10.1016/j.ces.2017.01.035. free.
2. Ryan. David. Baker. Michael. Kowalski. Adam. Simmons. Mark. 2018. Emulsification using a "Sonolator" liquid whistle: A new correlation for droplet size from pilot-scale experiments. Chemical Engineering Science. 189. 369–379. 10.1016/j.ces.2018.06.004. free.
3. EngD.. Ryan. David. 2015. Investigation of Fluid Dynamics and Emulsification in Sonolator Liquid Whistles. University of Birmingham, UK. 1 Sep 2015.