Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Jamel Chahed"'
Publikováno v:
Journal of Fluids Engineering. 144
The paper studies one-way and two-way coupling interactions between the liquid turbulence and bubbles' presence in bubbly jets. One-way coupling focuses on jet with low void fraction in which the bubbles have no significant effect on the hydrodynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b58c3ace497306752d0d662b5f2daba4
https://doi.org/10.1115/1.4053903
https://doi.org/10.1115/1.4053903
Publikováno v:
Multiphase Science and Technology. 32:181-202
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2ef6d3da3fabf96fe1bb1243fb97645
https://doi.org/10.1615/multscientechn.2020031736
https://doi.org/10.1615/multscientechn.2020031736
Autor:
Jamel Chahed
Publikováno v:
Modeling Earth Systems and Environment. 5:1221-1230
The paper presents a one-dimensional two-fluid model for the simulation of gas–liquid flow in vertical degassing devises used in extracting dissolved gases for energy production or for protection against lake overturns. The inter-phase mass transfe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f3df2224f48ca3d6edea586e7c6c63e
https://doi.org/10.1007/s40808-019-00622-x
https://doi.org/10.1007/s40808-019-00622-x
Publikováno v:
Environmental Science and Pollution Research. 26:22892-22906
Numerous uncertainty factors in dispersion models should be taken into account in order to improve the reliability of predictions. The ability of a mesoscale meteorological model to assimilate observational data is an efficient way to improve operati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc8ce4d00a5d0956ea9cca0b02e392b6
https://doi.org/10.1007/s11356-019-05486-3
https://doi.org/10.1007/s11356-019-05486-3
Publikováno v:
International Journal of Multiphase Flow. 114:82-97
A new formulation of the interfacial momentum transfer in two-fluid model for bubbly flows is presented and implemented in a CFD code. The main feature of the interfacial momentum closure lies in an explicit formulation of the turbulent contribution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3dc2965cf8d5053d6a8f4ef578d2ff1
https://doi.org/10.1016/j.ijmultiphaseflow.2019.01.018
https://doi.org/10.1016/j.ijmultiphaseflow.2019.01.018
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
http://jafmonline.net/JournalArchive/download?file_ID=50018&issue_ID=1003
Publikováno v:
Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (2nd Edition) ISBN: 9783030512095
Estimating and quantifying in an accurate way, the distribution of pollutant concentrations plays a crucial role in the emergency response management in major nuclear accidents. As in many areas of the environmental studies, air quality models are us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15bde3c0bdfd0fd21dff05c158f2e98a
https://doi.org/10.1007/978-3-030-51210-1_320
https://doi.org/10.1007/978-3-030-51210-1_320
Autor:
Jamel Chahed, Lucien Masbernat
Publikováno v:
Journal of Fluids Engineering. 142
A two-fluid model with second-order turbulence closure is used for the simulation of a turbulent bubbly boundary layer. The turbulence model is based on the decomposition of the Reynolds stress tensor in the liquid phase into two parts: a turbulent p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c387b523733b69cea75a03e55f633a87
https://doi.org/10.1115/1.4045994
https://doi.org/10.1115/1.4045994
Publikováno v:
International Journal of Multiphase Flow. 147:103903
The major focus of the present work is to develop an adequate closure model for the turbulent contribution of the interfacial momentum transfer term in turbulent bubbly flow. For this purpose, numerical simulations have been conducted on bubbly pipe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee10f53ef3cdd74272f359e6c5c92121
https://doi.org/10.1016/j.ijmultiphaseflow.2021.103903
https://doi.org/10.1016/j.ijmultiphaseflow.2021.103903
Autor:
Jamel Chahed
Publikováno v:
Journal of African Earth Sciences. 178:104123
The present research aims to assess and analyze one-dimensional two-fluid models used in simulating gas-liquid dynamics and interphase transfers in degassing columns. The assessment of two-fluid models is based on benchmark measurement data carried o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b75200a234f43e983eef9ca4e93e84c0
https://doi.org/10.1016/j.jafrearsci.2021.104123
https://doi.org/10.1016/j.jafrearsci.2021.104123