Fluidic oscillators mediating generation of microbubbles (survey)

0541999 - ÚT 2022 RIV CH eng J - Journal Article
Tesař, Václav
Fluidic oscillators mediating generation of microbubbles (survey).
Fluids. Roč. 6, č. 2 (2021), č. článku 77. E-ISSN 2311-5521
R&D Projects: GA MŠMT(CZ) EF16_019/0000753
Institutional support: RVO:61388998
Keywords : heating * temperature control * cooling * scaled-up capsule * n-eicosane
OECD category: Fluids and plasma physics (including surface physics)
Method of publishing: Open access
https://www.mdpi.com/2311-5521/6/2/77

If a gas volume is distributed into many bubbles of a sub-millimetre size, the total gas/liquid surface becomes very large. This increases overall heat and/or mass transport across the sum of surfaces. The paper discusses several applications in which the use of microbubbles increases efficiency of various processes, especially in wastewater treatment and in growing microorganisms such as algae, yeast, bacteria, or primitive fungi. The problem of microbubble generation by percolation in an aerator is their coalescence into larger bubbles. The solution of this size discrepancy question was found in agitating the gas flow by a fluidic oscillator — a no-moving-part device, simple, inexpensive, resistant to external effects.
Permanent Link: http://hdl.handle.net/11104/0319680