Energy spectra of buoyancy-driven bubbly flow in a vertical Hele-Shaw cell

Autor: Rashmi Ramadugu, Vikash Pandey, Prasad Perlekar

Publikováno v: Frontiers in Physics, Vol 11 (2023)

We present direct numerical simulations (DNS) study of confined buoyancy-driven bubbly flows in a Hele-Shaw setup. We investigate the spectral properties of the flow and make comparisons with experiments. The energy spectrum obtained from the gap-ave

Externí odkaz: https://doaj.org/article/0f6b3bca3de8491486cd5ab214b12388

Analysis of Pseudo-Turbulence Flow Induced by Bubble Periodic Formation in Non-Newtonian Fluids

Autor: Wenyuan Fan, Xiao Hong Yin

Publikováno v: Iranian Journal of Chemistry & Chemical Engineering, Vol 37, Iss 5, Pp 167-175 (2018)

Laser Doppler Velocimetry (LDV) has been employed to determine pseudo-turbulence characteristics of the flow field around bubble train forming in non-Newtonian caboxymethylcellulose (CMC) aqueous solution at low gas flow rate condition. The Reynolds

Externí odkaz: https://doaj.org/article/6c17af94b46744fc8618986b7a11c33c

First and Second Order Turbulence Closures Applied to Homogeneous Turbulent Bubbly Flows

Autor: Ghazi Bellakhal, F. Chaibina, Jamel Chahed

Publikováno v: Journal of Applied Fluid Mechanics, Vol 12, Iss 6, Pp 1813-1823 (2019)

First and second turbulence models for turbulent bubbly flows are implemented in the CFD code. In the second order turbulence closure, the Reynolds stress tensor of the continuous phase is split into two parts: a turbulent part produced by the gradie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7190f1cf74f4ef3309af796ed048b02a
http://jafmonline.net/JournalArchive/download?file_ID=50018&issue_ID=1003

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Towards an innovative R$_{ij}$$-$$\epsilon$ model for turbulence in bubbly flows from DNS simulations

Autor: Du Cluzeau, A., Bois, G., Toutant, Adrien, Martinez, J-M.

Publikováno v: TI2018-5th Internationnal conference on Turbulence and Interactions
TI2018-5th Internationnal conference on Turbulence and Interactions, Jun 2018, Les Trois ilets, France

International audience; The Euler-Euler two-fluid model for turbulent bubbly flows has been extensively studied and modelling of turbulence is necessary for many industrial applications. In addition to the single-phase flow mechanism of Shear Induced

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::942efbf2a5a102ac223ff7c8d5d8a04d
https://hal-cea.archives-ouvertes.fr/cea-02338616