"Master and Slave" fluidic amplifier cascade

Václav Tesař

Institute of Thermomechanics v.v.i., Academy of Sciences of the Czech Republic, 182 00 Prahe 8, Dolejškova 5, Czech Republic

Published online: 16 April 2012

Abstract

No-moving-part fluidics recently found interesting application in generation of gas microbubbles by oscillating the inlet flow of the gas into the aerator. The oscillation frequency has to be high and this calls for small size of the oscillator. On the other hand, most microbubble applications require a large total gas flow. This calls for large fluidic device – a les expensive alternative than “numbering up” (several oscillators in parallel). The contradiction of the large and small scale is solved by the “MASTER & SLAVE” fluidic circuit: large output device controlled by a small oscillator. Paper discusses basic problems encountered in designing the circuit which requires matching the characteristics of the two devices.