Littérature scientifique sur le sujet « Disturbance energy budgets »
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Articles de revues sur le sujet "Disturbance energy budgets"
Brear, Michael J., Frank Nicoud, Mohsen Talei, Alexis Giauque et Evatt R. Hawkes. « Disturbance energy transport and sound production in gaseous combustion ». Journal of Fluid Mechanics 707 (12 juillet 2012) : 53–73. http://dx.doi.org/10.1017/jfm.2012.264.
Texte intégralKARIMI, NADER, MICHAEL J. BREAR et WILLIAM H. MOASE. « Acoustic and disturbance energy analysis of a flow with heat communication ». Journal of Fluid Mechanics 597 (1 février 2008) : 67–89. http://dx.doi.org/10.1017/s0022112007009573.
Texte intégralStarry, O. S. « Ecosystem ecology as a framework for organizing and advancing greenroof research ». Israel Journal of Ecology and Evolution 62, no 1-2 (12 avril 2016) : 97–102. http://dx.doi.org/10.1080/15659801.2015.1031470.
Texte intégralGiroux, Jean-Francois, et Jean Bédard. « Activity budgets of greater snow geese in fall ». Canadian Journal of Zoology 68, no 12 (1 décembre 1990) : 2700–2702. http://dx.doi.org/10.1139/z90-375.
Texte intégralSoudijn, Floor H., Tobias van Kooten, Hans Slabbekoorn et André M. de Roos. « Population-level effects of acoustic disturbance in Atlantic cod : a size-structured analysis based on energy budgets ». Proceedings of the Royal Society B : Biological Sciences 287, no 1929 (17 juin 2020) : 20200490. http://dx.doi.org/10.1098/rspb.2020.0490.
Texte intégralFraser, Zoe L., Ross M. Culloch et Sean D. Twiss. « As clear as day : nocturnal activity differs from diurnal activity in a temporally constrained capital breeder ». Behaviour 156, no 10 (2019) : 997–1016. http://dx.doi.org/10.1163/1568539x-00003553.
Texte intégralArlettaz, Raphaël, Sébastien Nusslé, Marjana Baltic, Peter Vogel, Rupert Palme, Susanne Jenni-Eiermann, Patrick Patthey et Michel Genoud. « Disturbance of wildlife by outdoor winter recreation : allostatic stress response and altered activity–energy budgets ». Ecological Applications 25, no 5 (juillet 2015) : 1197–212. http://dx.doi.org/10.1890/14-1141.1.
Texte intégralRiddington, R., M. Hassall, S. J. Lane, P. A. Turner et R. Walters. « The impact of disturbance on the behaviour and energy budgets of Brent GeeseBranta b. bernicla ». Bird Study 43, no 3 (novembre 1996) : 269–79. http://dx.doi.org/10.1080/00063659609461019.
Texte intégralSchummer, Michael L., et William R. Eddleman. « Effects of Disturbance on Activity and Energy Budgets of Migrating Waterbirds in South-Central Oklahoma ». Journal of Wildlife Management 67, no 4 (octobre 2003) : 789. http://dx.doi.org/10.2307/3802686.
Texte intégralRobson, Anthony A., Laurent Chauvaud, Rory P. Wilson et Lewis G. Halsey. « Small actions, big costs : the behavioural energetics of a commercially important invertebrate ». Journal of The Royal Society Interface 9, no 72 (4 janvier 2012) : 1486–98. http://dx.doi.org/10.1098/rsif.2011.0713.
Texte intégralThèses sur le sujet "Disturbance energy budgets"
Klein, Jean-Michel. « Étude des instabilités de combustion, mouvements de flamme et flashbacks dans un foyer comprenant un élargissement brusque ». Electronic Thesis or Diss., Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2024. http://www.theses.fr/2024ESMA0012.
Texte intégralThe design of future ramjets would benefit from a better understanding of the combustion instabilities that occur in flows featuring recirculation zones : a problem studied at ONERA by the means of the MICAEDI combustor from the LAERTE test facility. In this experimental setup, a methane-air premixed flame stabilizes at the vicinity of a backward-facing step, in an environment comparable to ramjet combustors. At certain operating points, significant pressure oscillations accompanied by periodic flame flashbacks appear due to the triggering of longitudinal acoustic modes. In this thesis work, the CEDRE CFD solver is used in order to restitute those instabilities, to study them and to improve their understanding. A post-processing methodology based on disturbance energy budgets (DEB) is elaborated. Its first application to the case of a one-dimensional acousticallyforced premixed flame puts into evidence two dimensionless numbers that can be used to describe its dynamicsby means of scaling laws : (i) a Strouhal number associated with the the flames motions that compares its flapping magnitude to the laminar flame thickness, and (ii) the magnitude of the velocity perturbation normalized using the laminar flame propagation speed. Large-eddy simulations of flames stablized in the vicinity of a backward-facing step are then carried out. In two dimensions (2D), this approach makes it possible to reproduce combustion dynamics similar to that observed in the MICAEDI experiment at a moderate computational cost. A sensitivity study is conducted on the operating parameters to clarify the phenomenology associated with the development of combustion instabilities and the occurence of flame flashbacks. It appears that the feedback loop between longitudinal acoustic modes and flame front oscillations is favoured if the symmetry of the flame wrinkles is broken by the action of the recirculation bubble establishing itself at the foot of the step. This mechanism is favoured if the acoustic mode displays a velocity node at the vicinity of the step and if its frequency is low and/or close to the characteristic frequency of the Kelvin-Helmholtz instability. Oscillations may also occur at lower frequencies as a result of flapping of the point where the flame re-attaches to the combustor upper wall.These oscillations can cause flashbacks by the mean of two mechanisms : (i) synchronization between the oscillations of the acoustic modes and the periodic detachments of the recirculation bubble which then rises above the step before being convected downstream, a process during which the flame is transported upstream and (ii)action of the flame which, during its propagation in the boundary layer at low frequencies, causes its detachment and thus favours the birth of new flashbacks at higher frequencies. While bubble detachment causes flashbacks at high levels of velocity oscillation (the direction of the flow is close to reversing, or even reverses periodically), boundary layer flashbacks are likely to occur at more moderate levels. In three dimensions (3D), the use of a geometry representative of the MICAEDI combustor allows a detailed reproduction of the observed instabilities. Indeed, the limit cycle obtained numerically shows many similarities with the experimental data. The main mechanisms analysed on the 2D simulations are also observed on this 3D case, ensuring a more accurate modelling of the turbulence and acoustics, thus validating the whole approach followed in this manuscript
Chapitres de livres sur le sujet "Disturbance energy budgets"
Burke, William J. « Storm time energy budgets of the global thermosphere ». Dans Midlatitude Ionospheric Dynamics and Disturbances, 235–46. Washington, D. C. : American Geophysical Union, 2008. http://dx.doi.org/10.1029/181gm21.
Texte intégralMarcos, Bruno, João Gonçalves, Domingo Alcaraz-Segura, Mário Cunha et João P. Honrado. « A satellite-based multi-dimensional approach to identify potential post-fire regime shifts in ecosystem functioning ». Dans Advances in Forest Fire Research 2022, 58–66. Imprensa da Universidade de Coimbra, 2022. http://dx.doi.org/10.14195/978-989-26-2298-9_8.
Texte intégralIslam, Md Hasibul, Zuhara Chavez et Monica Bellgran. « An Exploratory Study on Integrating Sustainability Aspects During the Acquisition of Production Equipment ». Dans Advances in Transdisciplinary Engineering. IOS Press, 2020. http://dx.doi.org/10.3233/atde200143.
Texte intégralActes de conférences sur le sujet "Disturbance energy budgets"
Huet, Maxime. « Budgets of Disturbances Energy for Nozzle Flows at Subsonic and Choked Regimes ». Dans ASME Turbo Expo 2017 : Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-63525.
Texte intégralPannier, Christopher P., Kira Barton, David Hoelzle et Zhi Wang. « A Model of Liquid-Drop Spreading for Electrohydrodynamic Jet Printing ». Dans ASME 2015 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/dscc2015-9995.
Texte intégralShao, Q., C. Huang et J. F. Huang. « FOREST PHENOLOGICAL TRENDS IN THE MIDDLE AND HIGH LATITUDE OF THE NORTHERN HEMISPHERE ». Dans Лесные экосистемы в условиях изменения климата : биологическая продуктивность и дистанционный мониторинг. Crossref, 2020. http://dx.doi.org/10.25686/7233.2020.6.58831.
Texte intégralGeng, Kaihe, Ce Yang, Xinyu He, Chenxing Hu, Hanzhi Zhang et Xin Shi. « Circulation Budget Analysis of the Leading-Edge Vortex in a Wells Turbine Under Steady Inflow Conditions ». Dans ASME Turbo Expo 2022 : Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-81890.
Texte intégralChen, Li-Wei, Christian Wakelam, Jonathan Ong, Andreas Peters, Andrea Milli et Vittorio Michelassi. « Numerical Investigation of the Compressible Flow Through a Turbine Center Frame Duct ». Dans ASME Turbo Expo 2018 : Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75307.
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