Fluidics: the answer to problems of handling hazardous fluids

Abstract

Dangerous fluids must be kept within a containment. This may be a problem in emergency situations which almost inevitably happen from time to time in mechanical pumps and flow control valves due to material fatigue, seizing, or screws getting loose. During maintenance and repair the fluid may be exposed. A solution is offered by no-moving-parts maintenance-free fluidics. Three classes of devices are discussed: A) passive flow controllers, B) valves controlled by an external signal, C) fluidic pumps driven by alternating flow.

Theoretical Modeling, Design and Simulation of an Innovative Diverting Valve Based on Coanda Effect

“…A "fluidic-device" is a particular apparatus able to take advantage of the interaction between fluid flows and nearby walls to produce a specific effect on the flow; this can be a deviation, or a turbulence/vorticity gain or an entrainment effect. The apparatus under study, said "fluidic-element", works with a low amount of fluid flow at high speed and without moving parts, as clearly explained with many examples by Tesar [1]. It can elaborate on a relevant fluid flow power with low activation energy requirement.…”