Academic literature on the topic 'Unsteady combustion'

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Journal articles on the topic "Unsteady combustion"

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Kailasanath, K. "Unsteady Combustion." AIAA Journal 35, no. 5 (1997): 920. http://dx.doi.org/10.2514/2.7470.

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Zhu, M., A. P. Dowling, and K. N. C. Bray. "Forced Oscillations in Combustors With Spray Atomizers." Journal of Engineering for Gas Turbines and Power 124, no. 1 (1999): 20–30. http://dx.doi.org/10.1115/1.1396841.

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Most types of combustion-driven devices experience combustion instabilities. For aeroengine combustors, the frequency of this oscillation is typically in the range 60–120 Hz and is commonly called “rumble.” The rumble oscillations involve coupling between the air and fuel supplies and unsteady flow in the combustor. Essentially pressure fluctuations alter the inlet fuel and air, thereby changing the rate of combustion, which at certain frequencies further enhances the pressure perturbation and so leads to self-excited oscillations. The large residence time of the liquid fuel droplets, at idle
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Brookes, S. J., R. S. Cant, I. D. J. Dupere, and A. P. Dowling. "Computational Modeling of Self-Excited Combustion Instabilities." Journal of Engineering for Gas Turbines and Power 123, no. 2 (2001): 322–26. http://dx.doi.org/10.1115/1.1362662.

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It is well known that lean premixed combustion systems potentially offer better emissions performance than conventional non-premixed designs. However, premixed combustion systems are more susceptible to combustion instabilities than non-premixed systems. Combustion instabilities (large-scale oscillations in heat release and pressure) have a deleterious effect on equipment, and also tend to decrease combustion efficiency. Designing out combustion instabilities is a difficult process and, particularly if many large-scale experiments are required, also very costly. Computational fluid dynamics (C
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Firsov, A. N., N. I. Ozerkovskaya, and K. G. Shkadinskii. "Unsteady Modes of Filtration Combustion." Combustion, Explosion, and Shock Waves 46, no. 4 (2010): 371–79. http://dx.doi.org/10.1007/s10573-010-0051-3.

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Markov, A. A., and I. A. Filimonov. "Unsteady Patternsof Spiral Spin Combustion." Physical-Chemical Kinetics in Gas Dynamics 22, no. 3 (2021): 10–20. http://dx.doi.org/10.33257/phchgd.22.3.938.

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Morgans, Aimee S., and Ignacio Duran. "Entropy noise: A review of theory, progress and challenges." International Journal of Spray and Combustion Dynamics 8, no. 4 (2016): 285–98. http://dx.doi.org/10.1177/1756827716651791.

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Combustion noise comprises two components: direct combustion noise and indirect combustion noise. The latter is the lesser studied, with entropy noise believed to be its main component. Entropy noise is generated via a sequence involving diverse flow physics. It has enjoyed a resurgence of interest over recent years, because of its increasing importance to aero-engine exhaust noise and a recognition that it can affect gas turbine combustion instabilities. Entropy noise occurs when unsteady heat release rate generates temperature fluctuations (entropy waves), and these subsequently undergo acce
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ASAI, Ryouichi, Young Joon YANG, Shohji TSUSHIMA, and Masashi KATSUKI. "522 Unsteady Combustion and Combustion Control by Oscillating Flow." Proceedings of Conference of Kansai Branch 2000.75 (2000): _5–43_—_5–44_. http://dx.doi.org/10.1299/jsmekansai.2000.75._5-43_.

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Zhu, M., A. P. Dowling, and K. N. C. Bray. "Self-Excited Oscillations in Combustors With Spray Atomizers." Journal of Engineering for Gas Turbines and Power 123, no. 4 (2000): 779–86. http://dx.doi.org/10.1115/1.1376717.

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Combustors with fuel-spray atomizers are susceptible to a low-frequency oscillation, particularly at idle and sub-idle conditions. For aero-engine combustors, the frequency of this oscillation is typically in the range 50–120 Hz and is commonly called “rumble.” In the current work, computational fluid dynamics (CFD) is used to simulate this self-excited oscillation. The combustion model uses Monte Carlo techniques to give simultaneous solutions of the Williams’ spray equation together with the equations of turbulent reactive flow. The unsteady combustion is calculated by the laminar flamelet p
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Prokof’ev, V. G. "Unsteady Combustion Modes in Rectangular Rods." International Journal of Self-Propagating High-Temperature Synthesis 28, no. 3 (2019): 155–58. http://dx.doi.org/10.3103/s1061386219030099.

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Schroeder, T. B., and M. Quinn Brewster. "UNSTEADY COMBUSTION OF HOMOGENEOUS ENERGETIC SOLIDS." International Journal of Energetic Materials and Chemical Propulsion 4, no. 1-6 (1997): 1082–92. http://dx.doi.org/10.1615/intjenergeticmaterialschemprop..v4.i1-6.1000.

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Dissertations / Theses on the topic "Unsteady combustion"

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Sone, Kazuo. "Unsteady simulations of mixing and combustion in internal combustion engines." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/12171.

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Odedra, Anand. "Unsteady flamelet modelling of turbulent non-premixed combustion." Thesis, Loughborough University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497217.

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In this study, RANS based axisymmetric simulations of the jet flames, bluff-body flames and swirling flames have been attempted by employing steady and unsteady flamelet models. The jet flames have been studied for pure hydrogen and diluted hydrogen (CO/H2/N2) fuels. The bluff-body flames have been studied for three different fuels CH4/H2, H2/CO and CH3OH. The swirling flame has been investigated for CH4/H2 fuel. The importance of unsteady effects is thoroughly assessed for combustion predictions. The transient effects are considered in a post-processing manner employing the Lagrangian Flamele
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Ward, Christopher Michael. "Unsteady ejectors for pressure gain combustion gas turbines." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648884.

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Sanders, Darius Demetri. "An Investigation of Controlled Oscillations in a Plasma Torch for Combustion Enhancement." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/35700.

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The oscillating plasma torch is proposed as a potential device that will produce an oscillating shock and resulting control of the supersonic combustion process. This research will capitalize on previous results [Gallimore, 1998] which indicate that the plasma torch oscillations originate from the inherent oscillations of the voltage applied to the torch. The aim of this research is to thoroughly investigate the oscillation behavior of the plasma torch with the plan of ultimately controlling the oscillation at chosen frequencies. A modulating power system used for dynamic control of the pla
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Bodin, Olle. "Numerical Computations of Internal Combustion Engine related Transonic and Unsteady Flows." Licentiate thesis, Stockholm : Mekanik, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9945.

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Ruiz, Anthony. "Unsteady Numerical Simulations of Transcritical Turbulent Combustion in Liquid Rocket Engines." Thesis, Toulouse, INPT, 2012. http://www.theses.fr/2012INPT0009/document.

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Ces cinquantes dernières années, la majorité des paramètres de conception des moteurs cryotechniques ont été ajustés en l'absence d'une compréhension détaillée des phénomènes de combustion, en raison des limites des diagnostiques expérimentaux et des capacités de calcul. L'objectif de cette thèse est de réaliser des simulations numériques instationnaires d'écoulements réactifs transcritiques de haute fidélité, pour permettre une meilleure compréhension de la dynamique de flamme dans les moteurs cryotechniques et finalement guider leur amélioration. Dans un premier temps, la thermodynamique gaz
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Porumbel, Ionuţ. "Large Eddy Simulation of premixed and partially premixed combustion." Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-11042006-042840/.

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Thesis (Ph. D.)--Aerospace Engineering, Georgia Institute of Technology, 2007.<br>Yeung, Pui-Kuen, Committee Member ; Lieuwen, Tim, Committee Member ; Menon, Suresh, Committee Chair ; Seitzman, Jerry, Committee Member ; Syed, Saadat, Committee Member.
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Estefanos, Wessam. "Effects of the Fuel-Air Mixing on Combustion Instabilities and NOx Emissions in Lean Premixed Combustion." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1460731723.

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Amaya, Jorge. "Unsteady coupled convection, conduction and radiation simulations on parallel architectures for combustion applications." Thesis, Toulouse, INPT, 2010. http://www.theses.fr/2010INPT0044/document.

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Dans l'industrie aéronautique, la génération d'énergie dépend presque exclusivement de la combustion d'hydrocarbures. La meilleure façon d'améliorer le rendement de ces systèmes et de contrôler leur impact environnemental, est d'optimiser le processus de combustion. Avec la croissance continue du de la puissance des calculateurs, la simulation des systèmes complexes est devenue abordable. Jusqu'à très récemment dans les applications industrielles le rayonnement des gaz et la conduction de chaleur dans les solides ont été négligés. Dans ce travail les outils nécessaires à la résolution couplée
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Wu, Men-Zan B. "Velocity and temperature measurements in a non-premixed reacting flow behind a backward facing step." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/12045.

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Books on the topic "Unsteady combustion"

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Culick, F. Unsteady Combustion. Springer Netherlands, 1996.

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Culick, F., M. V. Heitor, and J. H. Whitelaw, eds. Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3.

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Sun, Mingbo, Hongbo Wang, Zun Cai, and Jiajian Zhu. Unsteady Supersonic Combustion. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3595-6.

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Lieuwen, Timothy C. Unsteady combustor physics. Cambridge University Press, 2013.

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Cambier, Jean-Luc. Mixing and combustion enhancement from unsteady shock-fuel layer interactions. American Institute of Aeronautics and Astronautics, 1994.

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Wilson, Gregory Jon. Computation of steady and unsteady shock-induced combustion over hypervelocity blunt bodies. Stanford University, 1992.

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Sussman, Myles A. A computational study of unsteady shock induced combustion of hydrogen-air mixtures. American Institute of Aeronautics and Astronautics, 1994.

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Yungster, S. Simulation of unsteady hypersonic combustion around projectiles in an expansion tube. National Aeronautics and Space Administration, Glenn Research Center, 1999.

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Osborne, Richard Paul. Unsteady compressible flow prediction in reciprocating internal combustion engines: A theoretical and practical investigation. University of Birmingham, 1997.

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Dr, Pearson Richard J., ed. Design techniques for engine manifolds: Wave action methods for IC engines. Professional Engineering Pub. Limited, 1999.

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Book chapters on the topic "Unsteady combustion"

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Bahr, D. W. "Aircraft Turbine Engine NOx Emission Abatement." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_10.

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Whitelaw, J. H., and H. M. Xu. "Flame and Turbulence Interactions in a Four-Stroke SI Engine." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_13.

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Fernandes, E. C., and M. V. Heitor. "Unsteady Flames and the Rayleigh Criterion." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_1.

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Haahtela, O., W. Hentschel, and K. P. S. Schindler. "Diagnostics of Diesel Combustion." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_11.

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Senda, J., Y. Tanabe, and H. Fujimoto. "Visualization and Quantitative Analysis on Fuel Vapour Concentration in a Diesel Spray." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_12.

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Vannobel, F. "Spray Transport and Mixing in Spark Ignition Engines: Some Modelling and Experimental Trends." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_14.

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Witze, P. O. "In-Cylinder Diagnostics for Production Spark Ignition Engines." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_15.

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Ohira, T., Y. Ikeda, and T. Nakagima. "Cyclic Variation Due to Misfiring in a Small Two-Stroke Engine." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_16.

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Neij, H. M., B. Johansson, and M. Aldén. "Cycle-Resolved Two-Dimensional Laser-Induced Fluorescence Measurements of Fuel/Air Ratio Correlated to Early Combustion in a Spark-Ignition Engine." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_17.

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Eckbreth, A. C. "Laser Diagnostics for Temperature and Species in Unsteady Combustion." In Unsteady Combustion. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_18.

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Conference papers on the topic "Unsteady combustion"

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MEHTA, JAYESH, P. MUNGUR, W. DODDS, D. BAHR, and STEVE CLOUSER. "Thermoacoustics of unsteady combustion." In 13th Aeroacoustics Conference. American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-3928.

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ZUKOSKI, E. "Combustion instability sustained by unsteady vortex combustion." In 21st Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-1248.

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CHIU, H. "Group combustion of unsteady sprays." In 23rd Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 1987. http://dx.doi.org/10.2514/6.1987-1956.

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Rhoby, Michael R., and Kevin C. Gross. "IFTS for Harmonically Unsteady Combustion." In Fourier Transform Spectroscopy. OSA, 2015. http://dx.doi.org/10.1364/fts.2015.fw2a.2.

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Stone, Christopher, and Suresh Menon. "LES of Partially-Premixed Unsteady Combustion." In 41st Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-310.

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Kallenberg, M., and E. von Lavante. "The dynamics of unsteady supersonic combustion." In 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics, 1998. http://dx.doi.org/10.2514/6.1998-3319.

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Brewster, M., Maria Zebrowski, Timothy Schroeder, and Steven Son. "Unsteady combustion modeling of energetic solids." In 31st Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-2859.

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Dasari, Abhinav, and Mirko Gamba. "Characterization of Unsteady Combustion Phenomena in a University Scale Rocket Combustor." In 53rd AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-1155.

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GULATI, A., and R. MANI. "Active control of unsteady combustion-induced oscillations." In 28th Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-270.

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Ryder, Jr., Robert. "Application of the National Combustion Code towards unsteady mixing and combustion modeling." In 38th Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-335.

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Reports on the topic "Unsteady combustion"

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Law, Chung K. High-Speed Imaging System for Droplet Collision and Unsteady Combustion Studies. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada421064.

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Culick, F. E. Modeling and Active Control of Nonlinear Unsteady Motions in Combustion Chambers. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada310960.

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Matsui, Yuki, Rintaro Kajiwara, Ali Mohammadi, and Masahiro Shioji. Study on the Characteristics of Ignition and Combustion in Hydrogen and Natural Gas Unsteady Jets. SAE International, 2005. http://dx.doi.org/10.4271/2005-08-0274.

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