Zobrazeno 1 - 10
of 42
pro vyhledávání: '"George Karapetsas"'
Publikováno v:
The Proceedings of the Fluids engineering conference. 2022:OS06-26
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c43ca699cd2a6c978fcbfd4c8d09cfb6
https://doi.org/10.1299/jsmefed.2022.os06-26
https://doi.org/10.1299/jsmefed.2022.os06-26
Publikováno v:
Journal of Fluid Mechanics. 865:381-413
We investigate the dynamics of the buoyancy-driven rise of a bubble inside a viscoplastic material when it is subjected to an acoustic pressure field. To this end, we develop a simplified model based on the Lagrangian formalism assuming a pulsating b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a51eb2f085b48bb78894d2f53cea28d
https://doi.org/10.1017/jfm.2019.49
https://doi.org/10.1017/jfm.2019.49
Autor:
Chris Dritselis, George Karapetsas
Publikováno v:
Computers & Fluids. 245:105590
Two new control volume solvers multiFluidInterFoam and rheoMultiFluidInterFoam are presented for the simulation of Newtonian and non-Newtonian n-phase flows, respectively, fully accounting for interfacial tension and contact-angle effects for each ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72d5928cd60b20c6e30c421b575f6a9a
https://doi.org/10.1016/j.compfluid.2022.105590
https://doi.org/10.1016/j.compfluid.2022.105590
Autor:
Adam Williams, Zhenying Wang, Khellil Sefiane, George Karapetsas, Yasuyuki Takata, Prashant Valluri
Publikováno v:
Wang, Z, Karapetsas, G, Valluri, P, Sefiane, K, Williams, A & Takata, Y 2021, ' Dynamics of hygroscopic aqueous solution droplets undergoing evaporation or vapour absorption ', Journal of Fluid Mechanics, vol. 912, no. A2, pp. 1-30 . https://doi.org/10.1017/jfm.2020.1073
Journal of Fluid Mechanics
Journal of Fluid Mechanics
Studies on the evaporation of multicomponent droplets have revealed complex and important physical mechanisms, induced by preferential phase change or mediated by external vapour sources, e.g. occurrence of density-driven flows, phase separation, tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc4284ee624d0905ad337eef249f4204
https://hdl.handle.net/20.500.11820/b841a10e-a6ea-4c40-a612-de9631332119
https://hdl.handle.net/20.500.11820/b841a10e-a6ea-4c40-a612-de9631332119
Publikováno v:
Journal of Fluid Mechanics. 915
We consider the hydrodynamic stability of viscoelastic films flowing over inclined structured substrates with rectangular trenches. This topography allows investigating independently the effects of trench unit length, depth, width and inclination ang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c9dd18eb946bb1f0a90f5a5c23a6611
https://doi.org/10.1017/jfm.2021.163
https://doi.org/10.1017/jfm.2021.163
Publikováno v:
Advances in Heat Transfer and Thermal Engineering ISBN: 9789813347649
The liquid desiccant is a special type of hygroscopic aqueous salt solution, which has been applied in various dehumidification, absorption, and desalination systems. In contact with humid air, the liquid desiccant droplet grows due to vapor absorpti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16fa6aee81fb9e7c2445285032dfbf49
https://doi.org/10.1007/978-981-33-4765-6_12
https://doi.org/10.1007/978-981-33-4765-6_12
Autor:
Adam Williams, Dimitrios Mamalis, George Karapetsas, Omar Matar, Prashant Valluri, Khellil Sefiane
Publikováno v:
Journal of Fluid Mechanics
Williams, A G L, Karapetsas, G, Mamalis, D, Sefiane, K, Matar, O K & Valluri, P 2021, ' Spreading and retraction dynamics of sessile evaporating droplets comprising volatile binary mixtures ', Journal of Fluid Mechanics, vol. 907, A22 . https://doi.org/10.1017/jfm.2020.840
Williams, A G L, Karapetsas, G, Mamalis, D, Sefiane, K, Matar, O K & Valluri, P 2021, ' Spreading and retraction dynamics of sessile evaporating droplets comprising volatile binary mixtures ', Journal of Fluid Mechanics, vol. 907, A22 . https://doi.org/10.1017/jfm.2020.840
The dynamics of thin volatile droplets comprising of binary mixtures deposited on a heated substrate are investigated. Using lubrication theory, we develop a novel one-sided model to predict the spreading and retraction of an evaporating sessile axis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f1b901aa68ff2fb964a93ad788867b9
https://doi.org/10.1017/jfm.2020.840
https://doi.org/10.1017/jfm.2020.840
Publikováno v:
Physical Review Fluids. 5
We consider the evaporation of a thin liquid layer which consists of a binary mixture of volatile liquids. The mixture is on top of a heated substrate and in contact with the gas phase that consists of the same vapour as the binary mixture. The effec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fcd047dab735728a8227113e2687bb5
https://doi.org/10.1103/physrevfluids.5.104007
https://doi.org/10.1103/physrevfluids.5.104007
Publikováno v:
Journal of Fluid Mechanics. 858:689-713
The dynamics of a gas bubble in a square channel with a linearly increasing temperature at the walls in the vertical direction is investigated via three-dimensional numerical simulations. The channel contains a so-called ‘self-rewetting’ fluid wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::670bd09329b97deeab0b6c823cb96ea5
https://doi.org/10.1017/jfm.2018.774
https://doi.org/10.1017/jfm.2018.774
Publikováno v:
Langmuir. 33:10838-10850
We examine the thermocapillary-driven flow of a droplet on a nonuniformly heated patterned surface. Using a sharp-interface scheme, capable of efficiently modeling the flow over complex surfaces, we perform 2D and 3D finite element simulations for a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17661f2c9bcfe5a12db97fb5f4fd04a8
https://doi.org/10.1021/acs.langmuir.7b02762
https://doi.org/10.1021/acs.langmuir.7b02762