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1 PublicationA note on modeling the effects of surfactants on bubble-induced turbulence
Ma, T.; Liao, Y.; Hessenkemper, H.; Lucas, D.; Bragg, A.
Abstract
The recent experimental results of Ma et al. [1] reveal that with increasing concentration of surfactants, the generated bubble-induced turbulence (BIT) increases as well, although the bubbles rise slower. We show that this phenomenon has not be considered so far in the standard Reynolds-averaged Navier-Stokes (RANS) modelling for BIT, using the ansatz with source terms added to the transport equation of turbulent kinetic energy and dissipation, respectively. Some problematic issues related to the common concepts for closure of the liquid phase turbulence kinetic energy equation are also discussed. Furthermore, we demonstrated this issue by simulating the experiments using two-fluid approach.
Keywords: surfactant; bubble-induced turbulence
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Chemical Engineering & Technology 46(2023)9, 1817-1822
DOI: 10.1002/ceat.202300152
Cited 1 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-37289
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