Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Javier Urzay"'
Publikováno v:
International Journal of Multiphase Flow. 116:270-280
A new subgrid-scale (SGS) model for turbulent velocity fluctuations is proposed for large-eddy simulations (LES) of dispersed multi-phase flows. The modeled velocity contains scales smaller than the LES grid resolution, thereby enabling the predictio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2a4127b83249144dd01bd6135026c3e
https://doi.org/10.1016/j.ijmultiphaseflow.2019.04.025
https://doi.org/10.1016/j.ijmultiphaseflow.2019.04.025
Autor:
M. Di Renzo, Javier Urzay
A Mach-10 hypersonic boundary layer of air overriding a cold, isothermal, non-catalytic flat wall, and with a stagnation enthalpy of 21.6 MJ kg(-1), is analysed using direct numerical simulations. The calculations include multicomponent transport, eq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e818707c520480f6917d710be6b8c6e
https://hdl.handle.net/11587/476304
https://hdl.handle.net/11587/476304
Breaking waves generate a distribution of bubble sizes that evolves over time. Knowledge of how this distribution evolves is of practical importance for maritime and climate studies. The analytical framework developed in Part 1 examined how this evol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed8a607c7eee25db53a4c3cf58951e8f
The interaction between an incident shock wave and a Mach-6 undisturbed hypersonic laminar boundary layer over a cold wall is addressed using direct numerical simulations (DNS) and wall-modeled large-eddy simulations (WMLES) at different angles of in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd0f0265051d0f5d64c3afca4f80821d
Autor:
Lluís Jofre, Javier Urzay
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
Rocket engines and high-power new generations of gas-turbine jet engines and diesel engines oftentimes involve the injection of one or more reactants at subcritical temperatures into combustor environments at high pressures, and more particularly at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73a946d450cd92ea378e4cf6f3238241
http://hdl.handle.net/2117/329098
http://hdl.handle.net/2117/329098
Autor:
Jeonglae Kim, Javier Urzay, Maxime Bassenne, Peter E. Hamlington, Alexei Poludnenko, Colin A.Z. Towery
Publikováno v:
Journal of Fluid Mechanics. 848:78-116
A three-dimensional wavelet multi-resolution analysis of direct numerical simulations of a turbulent premixed flame is performed in order to investigate the spatially localized spectral transfer of kinetic energy across scales in the vicinity of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f99e9d088a5cebe3dd856d2259d4d28
https://doi.org/10.1017/jfm.2018.371
https://doi.org/10.1017/jfm.2018.371
Publikováno v:
AIAA Journal. 56:731-742
Aerospace vehicles flying at supersonic and hypersonic speeds are subject to increased wall heating rates caused by viscous friction with the gas environment. This extra heat is commonly referred t...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3017b4428f86cfc3a67bb1f04edd1e9f
https://doi.org/10.2514/1.j056240
https://doi.org/10.2514/1.j056240
Autor:
Javier Urzay
Publikováno v:
Annual Review of Fluid Mechanics. 50:593-627
Great efforts have been dedicated during the last decades to the research and development of hypersonic aircrafts that can fly at several times the speed of sound. These aerospace vehicles have revolutionary applications in national security as advan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::596488560e05533804f4c6a0579cf6b0
https://doi.org/10.1146/annurev-fluid-122316-045217
https://doi.org/10.1146/annurev-fluid-122316-045217
Publikováno v:
e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
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The interaction between a weakly turbulent free stream and a hypersonic shock wave is investigated theoretically by using linear interaction analysis (LIA). The formulation is developed in the limit in which the thickness of the thermochemical nonequ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::447b65e54caa7eb77b818eb93d7e1d2c
https://doi.org/10.1063/5.0059948
https://doi.org/10.1063/5.0059948
Autor:
Matthias Ihme, Peter E. Hamlington, Alexei Poludnenko, Jeffrey O'Brien, Colin A.Z. Towery, Javier Urzay
Publikováno v:
Proceedings of the Combustion Institute. 36:1967-1975
Multi-scale interactions and kinetic-energy transfer between turbulence and flames are fundamental to understanding and modeling premixed turbulent reacting flows. In order to investigate these phenomena, direct numerical simulations of a turbulent p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27f918c3f4072fa116e5d84ef72fc16a
https://doi.org/10.1016/j.proci.2016.05.005
https://doi.org/10.1016/j.proci.2016.05.005