Analysis of wake structures in bubbly flowsusing Particle Image Velocimetry (PIV)

• Autorzy: Lewandowski Björn , Fertig Micha , Kreke Georg , Ulbricht Mathias

Identyfikatory

DOI

0.24425/cpe.2018.124996

• Języki publikacji: EN

Abstrakty

EN

The flow structure around rising single air bubbles in water and their characteristics, such as equivalentdiameter, rising velocity and shape, was investigated using Particle Image Velocimetry (PIV) and Shadowgraphy in a transparent apparatus with a volume of 120mL. The effect of different volumetricgas flow rates, ranging from 4μL/min to 2 mL/min on the liquid velocity was studied. Ellipsoidalbubbles were observed with a rising velocity of 0.25–0.29 m/s. It was found that a Kármán vortex streetexisted behind the rising bubbles. Furthermore, the wake region expanded with increasing volumetricgas flow rate as well as the number and size of the vortices.

Słowa kluczowe

EN

bubbly flow; Particle Image Velocimetry; wake analysis; flowcharacteristics; high-speedimaging

PL

przepływ; cząstki; analiza; charakterystyka przepływu

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2019
• Tom: Vol. 40, nr 1
• Strony: 49–--55
• Opis fizyczny: Bibliogr. 17 poz., tab., rys.

Twórcy

autor

Lewandowski Björn

• Chair of Technical Chemistry II, University of Duisburg-Essen, Essen, DE
• Faculty of Chemistry, Niederrhein University of Applied Sciences, Krefeld, DE

autor

Fertig Micha

• Faculty of Chemistry, Niederrhein University of Applied Sciences, Krefeld, DE

autor

Kreke Georg

• Faculty of Chemistry, Niederrhein University of Applied Sciences, Krefeld, DE

autor

Ulbricht Mathias

• Chair of Technical Chemistry II, University of Duisburg-Essen, Essen, DE

Bibliografia

• 1. Bröder D., 2003.Anwendung optischer Messtechniken zur Untersuchung disperser Gas-Flüssigkeits-Strömungen.Dissertation, Halle (Saale).
• 2. Brücker C., 1999. Structure and dynamics of the wake of bubbles and its relevance for bubble interaction.Phys.Fluids, 11 (7), 1781–1796. DOI: 10.1063/1.870043.
• 3. Brücker C., 2000. PIV in multiphase flows, In: Riethmuller M.L. (Ed.),Particle Image Velocimetry and associatedtechniques,Lecture series 2000-01. Von Karman Institute for Fluid Dynamics, Rhode Saint Genčse, Belgium:VKI.
• 4. Clift R., Grace J.R., Weber M.E., 1978. Bubbles, drops, and particles. 1st edition, Academic Press, New York.
• 5. Fan L., Tsuchiya K., 1990.Bubble wake dynamics in liquids and liquid-solid suspensions. Butterworth–Heinemann,Boston.
• 6. Grau R., Heiskanen K., 2002. Visual technique for measuringbubble size in flotation machines.Miner. Eng.,15,507–513. DOI: 10.1016/S0892-6875(02)00074-2.
• 7. Kim S.M., Yi S.J., Kim H.D., Kim J.W., Kim K.C., 2010. Dynamicanalysis of bubble-driven liquid flows usingtime-resolved particle image velocimetry and proper orthogonal decomposition techniques.J. Visualization, 13,213–220. DOI: 10.1007/s12650-010-0029-y.
• 8. Kraume M., 2012.Transportvorgänge in der Verfahrenstechnik. 1st ed. Springer, Berlin Heidelberg.
• 9. Li Y., Zhu T., Liu Y., Tian Y., Wang H., 2012. Effects of surfactant on bubble hydrodynamic behavior underflotation-related conditions in wastewater.Water Sci. Technol., 65, 1060–1066. DOI: 10.2166/wst.2012.933.
• 10. Liu Z., Zheng Y., 2006. PIV study of bubble rising behavior.Powder Technol., 168, 10–20. DOI: 10.1016/j.powtec.2006.05.020.
• 11. Liu Z., Zheng Y., Jia L., Zhang Q., 2005. Study of bubble induced flow structure using PIV.Chem. Eng. Sci., 60,3537–3552. DOI: 10.1016/j.ces.2004.03.049.
• 12. Rafiei A., Robbertze M., Finch J., 2011. Gas holdup and singlebubble velocity profile.Int. J. Miner. Process., 98,89–93. DOI: 10.1016/j.minpro.2010.10.011.
• 13. Saito T., Sakakibara K., Miyamoto Y., Yamada M., 2010. A study of surfactant effects on the liquid-phase mo-tion around a zigzagging-ascent bubble using a recursive cross-correlation PIV.Chem. Eng. J.,158, 39–50.DOI: 10.1016/j.cej.2008.07.021.
• 14. Sam A., Gomez C., Finch J.A., 1996. Axial velocity profiles ofsingle bubbles in water/frother solutions.Int. J. Miner.Process., 47, 177–196. DOI: 10.1016/0301-7516(95)00088-7.
• 15. Sommerfeld M., 2004.Bubbly flows: Analysis, modelling and calculation. 1st edition, Springer, Berlin Heidelberg.
• 16. Span R., 2010. Properties of dry air, In: VDI-Gesellschaft Verfahrenstechnik und Chemieingenieurwesen (GVC)(Ed.),VDI Heat Atlas. Springer, Berlin, Heidelberg, pp. 172–191.
• 17. Wagner, W., Kretzschmar, H.-J., 2010. Properties of water and steam. in: VDI-Gesellschaft Verfahrenstechnik undChemieingenieurwesen (GVC) (Ed.),VDI Heat Atlas. Springer, Berlin, Heidelberg, pp. 153–171.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).