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  Hydrodynamic cavitation in Stokes flow of anisotropic fluids

Stieger, T., Agha, H., Schoen, M., Mazza, M., & Sengupta, A. (2017). Hydrodynamic cavitation in Stokes flow of anisotropic fluids. Nature Communications, 8: 15550. doi:10.1038/ncomms15550.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-5897-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-98A3-A
Genre: Journal Article

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 Creators:
Stieger, Tillamnn, Author
Agha, Hakam1, Author              
Schoen, Martin, Author
Mazza, Marco2, Author              
Sengupta, Anupam, Author
Affiliations:
1Group Structure formation in soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063301              
2Group Non-equilibrium soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063308              

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 Abstract: Cavitation, the nucleation of vapour in liquids, is ubiquitous in fluid dynamics, and is often implicated in a myriad of industrial and biomedical applications. Although extensively studied in isotropic liquids, corresponding investigations in anisotropic liquids are largely lacking. Here, by combining liquid crystal microfluidic experiments, nonequilibrium molecular dynamics simulations and theoretical arguments, we report flow-induced cavitation in an anisotropic fluid. The cavitation domain nucleates due to sudden pressure drop upon flow past a cylindrical obstacle within a microchannel. For an anisotropic fluid, the inception and growth of the cavitation domain ensued in the Stokes regime, while no cavitation was observed in isotropic liquids flowing under similar hydrodynamic parameters. Using simulations we identify a critical value of the Reynolds number for cavitation inception that scales inversely with the order parameter of the fluid. Strikingly, the critical Reynolds number for anisotropic fluids can be 50% lower than that of isotropic fluids.

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Language(s): eng - English
 Dates: 2017-05-302017
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1038/ncomms15550
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Title: Nature Communications
Source Genre: Journal
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Pages: 11 Volume / Issue: 8 Sequence Number: 15550 Start / End Page: - Identifier: ISSN: 2041-1723