| | |
| | |
Stat |
Members: 3667 Articles: 2'599'751 Articles rated: 2609
08 February 2025 |
|
| | | |
|
Article overview
| |
|
Intermittency in turbulent emulsions | Marco Crialesi-Esposito
; Guido Boffetta
; Luca Brandt
; Sergio Chibbaro
; Stefano Musacchio
; | Date: |
4 Jan 2023 | Abstract: | We investigate the statistics of turbulence in emulsions of two-immiscible
fluids of same density. We compute for the first time velocity increments
between points conditioned to be located in the same phase or in different
phases and examine their probability density functions (PDF) and the associated
structure functions (SF). This enables us to demonstrate that the the presence
of the interface reduces the skewness of the PDF at scales below the
Kolmogorov-Hinze scale and therefore the magnitude of the energy flux towards
the dissipative scales, which is quantified by the third-order SF. The analysis
of the higher order SFs shows that multiphase turbulence is more intermittent
than single-phase turbulence. In particular, the local scaling exponents of the
SFs display a saturation about the Kolmogorov-Hinze scale and below, which
indicates the presence of large velocity gradients across the interface.
Interestingly, the statistics approach of classic homogeneous isotropic
turbulence when significantly increasing the viscosity of the dispersed phase. | Source: | arXiv, 2301.01537 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
|
| |
|
|
|