Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Ivan Langella"'
Publikováno v:
Physics of Fluids. 35
A lean premixed ethylene–air flame in a backstep configuration is simulated on multiple grids using both direct numerical simulations (DNS) with reduced order kinetic mechanism and large eddy simulations (LES) with flamelet-based thermochemistry. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9703f434e6f8d620da192e506b127f94
https://doi.org/10.1063/5.0141108
https://doi.org/10.1063/5.0141108
Publikováno v:
Physics of Fluids, 35(5)
Turbulent structures in a concentric annular pipe within a uniform transverse magnetic field are examined for a liquid metal flow. Large-eddy simulations are performed to study the effect of magnetic field on turbulence suppression and heat transfer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2ddae4e40fcda7988f415c0f34be132
http://resolver.tudelft.nl/uuid:faaf25c2-9465-43a9-a750-f554dce95721
http://resolver.tudelft.nl/uuid:faaf25c2-9465-43a9-a750-f554dce95721
Autor:
Alessandro Soli, Ivan Langella
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 145
Large eddy simulation is used to investigate the flashback mechanism caused by the combustion-induced vortex breakdown (CIVB) in a high-pressure lean-burn annular combustor with lean direct injection of kerosene. A single sector of the geometry, incl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6c9351dea9690ed4a81db053c044e6f
https://doi.org/10.1115/1.4055483
https://doi.org/10.1115/1.4055483
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 144
In gas turbines, combustor inlets are characterized by significant levels of unsteady circumferential distortion due to compressor wakes and secondary flows, together with additional radial nonuniformity induced by the adverse pressure gradients in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dec7a980afd57b4e4476ffd99e2d52dc
https://doi.org/10.1115/1.4055750
https://doi.org/10.1115/1.4055750
Publikováno v:
Journal of Fluid Mechanics. 875:699-724
The recirculation zone length behind a bluff body is influenced by the turbulence intensity at the base of the body in isothermal flows and also the heat release and its interaction with turbulence in reacting flows. This relationship is observed to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::666823eb2507a8ae3ba9bf7cb6ee22c9
https://doi.org/10.1017/jfm.2019.475
https://doi.org/10.1017/jfm.2019.475
Autor:
Nedunchezhian Swaminathan, Xue-Song Bai, Thommie Nilsson, Rixin Yu, Nguyen Anh Khoa Doan, Ivan Langella
Publikováno v:
Combustion Theory and Modelling. 23:885-906
Direct numerical simulations (DNS) of low and high Karlovitz number (Ka) flames are analysed to investigate the behaviour of the reactive scalar sub-grid scale (SGS) variance in premixed combustion under a wide range of combustion conditions (regimes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef7a48addfd2e3cccd842aaa15fdf9a5
https://doi.org/10.1080/13647830.2019.1600033
https://doi.org/10.1080/13647830.2019.1600033
Publikováno v:
Flow, Turbulence and Combustion, 108(4)
The physical mechanism leading to flame local extinction remains a key issue to be further understood. An analysis of large eddy simulation (LES) data with presumed probability density function (PDF) based closure (Chen et al., 2020, Combust. Flame,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a5ebc26a99bdbdba5c16c7d47493efc
http://resolver.tudelft.nl/uuid:0af067ad-5b27-4071-94cd-6e0e074cbcff
http://resolver.tudelft.nl/uuid:0af067ad-5b27-4071-94cd-6e0e074cbcff
Multi-regime turbulent combustion modelling remains challenging and is explored with occurrence of local extinction in this study. A partially premixed model based on unstrained premixed flamelets is used in this work to investigate a piloted jet fla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e61d066bbcaf2bd4d11a14c1dc3fe096
https://www.repository.cam.ac.uk/handle/1810/298308
https://www.repository.cam.ac.uk/handle/1810/298308
Autor:
Thomas Behrendt, Johannes Heinze, Marco Zedda, Nedunchezhian Swaminathan, Ivan Langella, Lena Voigt
A numerical investigation is conducted in this work to shed light on the reasons leading to different flame configurations in gas turbine combustion chambers of aeronautical interest. Large eddy simulations (LES) with a flamelet-based combustion clos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::428bdcdf2e2c9598ba2c6a1dc9fbd4bc
https://doi.org/10.1115/gt2019-91879
https://doi.org/10.1115/gt2019-91879