Mixing induced by a bubble swarm rising through incident turbulence

Autor: Varghese Mathai, Chao Sun, Detlef Lohse, Elise Alméras

Publikováno v: International journal of multiphase flow, 114, 316-322. Elsevier

This work describes an experimental investigation on the mixing induced by a swarm of high Reynolds number air bubbles rising through a nearly homogeneous and isotropic turbulent flow. The gas volume fraction $\alpha$ and the velocity fluctuations $u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::050c8e4afc70c7439e2bae3cffbc83eb
https://doi.org/10.1016/j.ijmultiphaseflow.2019.03.014

Statistics of velocity fluctuations in a homogeneous liquid fluidized bed

Autor: Elise Alméras, Olivier Masbernat, Rodney O. Fox, Frédéric Risso

Publikováno v: Physical Review Fluids
Physical Review Fluids, American Physical Society, 2021, 6 (3), pp.034301. ⟨10.1103/PhysRevFluids.6.034301⟩
Physical Review Fluids, 2021, 6 (3), pp.034301. ⟨10.1103/PhysRevFluids.6.034301⟩

International audience; This work reports an experimental investigation of a liquid-solid fluidized bed involving inertial particles at a large Reynolds number. Owing to optical techniques and index matching, the statistics of the velocity fluctuatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e7494836eb6976c9301e3ec04936dfa
https://hal.archives-ouvertes.fr/hal-03181075/file/Almeras_27533.pdf

Twente mass and heat transfer water tunnel: Temperature controlled turbulent multiphase channel flow with heat and mass transfer

Autor: Sander G. Huisman, Dennis P. M. van Gils, Biljana Gvozdić, Detlef Lohse, Chao Sun, Gert Wim H. Bruggert, On Yu Dung, Elise Alméras

Publikováno v: Review of scientific instruments, 90(7):075117. American Institute of Physics
Review of Scientific Instruments
Review of Scientific Instruments, American Institute of Physics, 2019, 90 (7), pp.075117. ⟨10.1063/1.5092967⟩

A new vertical water tunnel with global temperature control and the possibility for bubble and local heat & mass injection has been designed and constructed. The new facility offers the possibility to accurately study heat and mass transfer in turbul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb8e566e5902107e72754875ce80d11d
https://research.utwente.nl/en/publications/ffc6f425-461f-480c-812d-3a47799d4959

Mixing mechanisms in a low-sheared inhomogeneous bubble column

Autor: Elise Alméras, Frédéric Risso, Véronique Roig, Cecile Plais, Frederic Augier

Publikováno v: Chemical Engineering Science
Chemical Engineering Science, Elsevier, 2018, 186, pp.52-61. ⟨10.1016/j.ces.2018.04.026⟩

This paper reports an experimental study of the mixing of a passive scalar in a bubble column at high Reynolds number and average gas volume fractions ranging from 2.0 % to 7.5 % . Starting from a homogeneous bubble column, the bubbly flow is progres

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cd8d1c6dc19451b5a838e6c4acc71bd
https://hal-ifp.archives-ouvertes.fr/hal-01989148/file/Almeras_22903.pdf

Experimental investigation of heat transport in homogeneous bubbly flow

Autor: Varghese Mathai, Dennis P. M. van Gils, Biljana Gvozdić, Roberto Verzicco, Detlef Lohse, Sander G. Huisman, Chao Sun, Xiaojue Zhu, Elise Alméras

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2018, 845, pp.226-244. ⟨10.1017/jfm.2018.213⟩
Journal of fluid mechanics, 845, 226-244. Cambridge University Press

We present results on the global and local characterisation of heat transport in homogeneous bubbly flow. Experimental measurements were performed with and without the injection of $\sim 2.5$ mm diameter bubbles (corresponding to $Re_b \approx 600$)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92698dd6204dfff5d42b377a43d6415c
https://hal.archives-ouvertes.fr/hal-02135628/document