Preferential Concentration of Particles in Forced Turbulent Flows: Effects of Gravity

Autor: Guodong Gai, Olivier Thomine, Abdellah Hadjadj, Sergey Kudriakov, Anthony Wachs

Publikováno v: Energies, Vol 16, Iss 6, p 2910 (2023)

The impact of gravity on the particle preferential concentration is investigated by direct numerical simulations in an Eulerian–Lagrangian framework for a large range of Stokes numbers Stη=0.01∼4. For particles with small Stokes numbers such as

Externí odkaz: https://doaj.org/article/91ab9e41526c451ab5290a5fda27b094

Numerical Study of Spray-Induced Turbulence Using Industrial Fire-Mitigation Nozzles

Autor: Guodong Gai, Abdellah Hadjadj, Sergey Kudriakov, Stephane Mimouni, Olivier Thomine

Publikováno v: Energies, Vol 14, Iss 4, p 1135 (2021)

A numerical investigation of the spray-induced turbulence generated from industrial spray nozzles is carried out to better understand the roles of the nozzle spray on the fires or explosions in different accidental scenarios. Numerical simulations ar

Externí odkaz: https://doaj.org/article/a8af0882e18b4af9bc44f5c0b32e6917

Vented explosion of hydrogen/air mixture: An intercomparison benchmark exercise

Autor: J. Commanay, Simon Jallais, Elena Vyazmina, T. Vuillez, A. Tripathi, F. Rosset, A. Mahon, Sergey Kudriakov, L. Krumenacker, Etienne Studer

Publikováno v: International Journal of Hydrogen Energy. 44:8914-8926

Explosion venting is a widely used mitigation solution in the process industry to protect indoor equipment or buildings from excessive internal pressure caused by accidental explosions. However, vented explosions are very complicated to model using c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fe4342c7460c5eb205322839fa364b80
https://doi.org/10.1016/j.ijhydene.2018.07.195

A new formulation of a spray dispersion model for particle/droplet-laden flows subjected to shock waves

Autor: Guodong Gai, Abdellah Hadjadj, Sergey Kudriakov, Olivier Thomine

Publikováno v: Journal of Fluid Mechanics. 905

A new analytical model is derived based on physical concepts and conservation laws, in order to evaluate the post-shock gas velocity, the gas density and the spray dispersion topology during the interaction of a shock wave and a water spray in a one-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::959eeccee4a01f7601f791c1c1ae044f
https://doi.org/10.1017/jfm.2020.748

Particles-induced turbulence: A critical review of physical concepts, numerical modelings and experimental investigations

Autor: Abdellah Hadjadj, Olivier Thomine, Guodong Gai, Sergey Kudriakov

Publikováno v: Theoretical and Applied Mechanics Letters
Theoretical and Applied Mechanics Letters, Elsevier, 2020, 10 (4), pp.241-248. ⟨10.1016/j.taml.2020.01.026⟩
Theoretical and Applied Mechanics Letters, 2020, 10 (4), pp.241-248. ⟨10.1016/j.taml.2020.01.026⟩
Theoretical and Applied Mechanics Letters, Vol 10, Iss 4, Pp 241-248 (2020)

International audience; The presence of solid particles or water droplets in continuous fluid flow can either induce turbulence attenuation or amplification. The modification of the state of the turbulence depends on the characteristics of the partic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f4d2395b8a493eb56a82480fe5609ef
https://hal.archives-ouvertes.fr/hal-03105812