Bibliografías temáticas / Impinging flame

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Literatura académica sobre el tema "Impinging flame"

Autor: Grafiati
Publicado: 25 de mayo de 2024
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Impinging flame"

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Leu, Jai Houng, and Ay Su. "Structure of Combustion Enhancement on Impinging Diffusion Flame." Applied Mechanics and Materials 152-154 (January 2012): 872–76. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.872.

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For the purpose to clear obverse the impingement and entrainment of the impinging diffusion flame, numbers of the tests are executed under various sets of momentum ratios in this paper. The oxidizer-fuel impinging flames shorten the fully development length. The peak temperature distributions are also greater than that of pure methane impinging flame. Furthermore, its flame width in YZ plane is thicker than that of the pure impinging flame. This effect is more obvious under lean combustion condition. Also, nitrogen gas in the mixture can increase the mixing rate.
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Slastnaya, Darya A., Roman V. Tolstoguzov, Leonid M. Chikishev, and Vladimir M. Dulin. "Numerical Simulation of Impingement Heat Transfer for a Laminar Premixed Bunsen Flame." Energies 18, no. 2 (2025): 270. https://doi.org/10.3390/en18020270.

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Flame impingement heat transfer is implemented in many industrial applications. The laminar premixed Bunsen flame, impinging on a flat cold surface, represents a basic model for the validation of computational fluid dynamics (CFD) codes, used for the simulation of industrial processes. Meanwhile, as the present paper demonstrates, some features of basic flame configurations are not well-reviewed. The present paper reports on the direct numerical simulation of the thermofluidic field in a laminar premixed impinging Bunsen flame in comparison with advanced optical measurements. The results revea
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Ko, H. S., S. S. Ahn, S. H. Baek, and T. Kim. "Development of Combined Optical System for Thermal Analysis of Impinging Flames." Key Engineering Materials 326-328 (December 2006): 71–74. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.71.

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Three-dimensional density distributions of an impinging and eccentric flame have been analyzed numerically and experimentally by a combined optical system with a digital speckle tomography. The flame has been ignited by premixed butane/air from air holes and impinged vertically against a plate located at the upper side of the burner nozzle. In order to compare with experimental data, computer synthesized phantoms of impinging and eccentric flames have been derived and reconstructed by a developed three-dimensional multiplicative algebraic reconstruction technique (MART). A new scanning techniq
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Park, Kweonha. "The flame behaviour of liquefied petroleum gas spray impinging on a flat plate in a constant volume combustion chamber." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219, no. 5 (2005): 655–63. http://dx.doi.org/10.1243/095440705x11031.

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Liquefied petroleum gas (LPG) sprays and diffusion flames are investigated in a constant volume combustion chamber having an impingement plate. The spray and flame images are visualized and compared with diesel and gasoline images over a wide range of ambient pressure. The high-speed digital camera is used to take the flame images. The injection pressure is generated by a Haskel air-driven pump, and the initial chamber pressure is adjusted by the amount of pumping air. The LPG spray and flame photographs are compared with those of gasoline and diesel fuel at the same conditions, and then the s
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BERGTHORSON, JEFFREY M., SEAN D. SALUSBURY, and PAUL E. DIMOTAKIS. "Experiments and modelling of premixed laminar stagnation flame hydrodynamics." Journal of Fluid Mechanics 681 (June 23, 2011): 340–69. http://dx.doi.org/10.1017/jfm.2011.203.

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The hydrodynamics of a reacting impinging laminar jet, or stagnation flame, is studied experimentally and modelled using large activation energy asymptotic models and numerical simulations. The jet-wall geometry yields a stable, steady flame and allows for precise measurement and specification of all boundary conditions on the flow. Laser diagnostic techniques are used to measure velocity and CH radical profiles. The axial velocity profile through a premixed stagnation flame is found to be independent of the nozzle-to-wall separation distance at a fixed nozzle pressure drop, in accord with res
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Pandey, Gopal, Geoffrey Brooks, Jamal Naser, and Daniel Liang. "Numerical Investigation of Hydrogen Blending on the Impinging Flame Structure in Non-Premixed CH4/H2/Air combustion for Scrap Metal Heating." Journal of Physics: Conference Series 3050, no. 1 (2025): 012012. https://doi.org/10.1088/1742-6596/3050/1/012012.

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Abstract Gas burners play a crucial role in various ironmaking and steelmaking processes, particularly for heating and cutting operations. In Electric Arc Furnaces (EAFs), high-speed gas burners are widely used to enhance thermal efficiency. While the majority of heat in EAF is generated by electric arcs, gas burners help distribute heat more uniformly, improving overall energy efficiency. Currently, most of these burners operate with natural gas (primarily methane (CH4)) as fuel and oxygen or air as oxidiser. The gases are supplied through separate ports, forming non-premixed flames. As these
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Jiang, Xi, Hua Zhao, and Kai H. Luo. "Direct Numerical Simulation of a Non-Premixed Impinging Jet Flame." Journal of Heat Transfer 129, no. 8 (2006): 951–57. http://dx.doi.org/10.1115/1.2737480.

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A non-premixed impinging jet flame at a Reynolds number 2000 and a nozzle-to-plate distance of two jet diameters was investigated using direct numerical simulation (DNS). Fully three-dimensional simulations were performed employing high-order numerical methods and high-fidelity boundary conditions to solve governing equations for variable-density flow and finite-rate Arrhenius chemistry. Both the instantaneous and time-averaged flow and heat transfer characteristics of the impinging flame were examined. Detailed analysis of the near-wall layer was conducted. Because of the relaminarization eff
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Ay, Su, and Liu Ying-Chieh. "Enhancements of impinging flame by pulsation." Journal of Thermal Science 9, no. 3 (2000): 271–75. http://dx.doi.org/10.1007/s11630-000-0062-6.

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Uppatam, Nuttamas, Wongsathon Boonyopas, Chattawat Aroonrujiphan, Natthaporn Kaewchoothong, Somchai Sae-ung, and Chayut Nuntadusit. "Heat Transfer Characteristic for Premixed Flame Jet from Swirl Chamber." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 77, no. 2 (2020): 33–46. http://dx.doi.org/10.37934/arfmts.77.2.3346.

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The objective of this research is to study flame structure and heat transfer characteristics for the premixed flame jet from the swirling chamber. In this study, LPG and air was utilized as gas fuel and oxidizer for a premixed flame. The equivalence ratios () of LPG and air were considered at 0.8, 1.0, and 1.2 under a Reynolds number Re = 4,000. The swirl flame was generated by double tangential inlets in cylindrical chamber. The diameter of chamber was fixed at D = 20 mm and the hydraulic diameter of the inlet was Dh = 5 mm. In this study, the effect of chamber geometry on flame structure was
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Chen, Yiran, Tong Yao, Qian Wang, and Kai Hong Luo. "Large eddy simulation of impinging flames: Unsteady ignition and flame propagation." Fuel 255 (November 2019): 115734. http://dx.doi.org/10.1016/j.fuel.2019.115734.

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Tesis sobre el tema "Impinging flame"

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Wang, Aijuan. "Experimental and numerical investigation of the confinement effect on the impinging flame in a compartment." Electronic Thesis or Diss., Bourges, INSA Centre Val de Loire, 2021. http://www.theses.fr/2021ISAB0002.

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Le phénomène de flamme de diffusion impactant une paroi est fréquent dans les scénarios d’incendie en milieu clos. Celui-ci peut entraîner à avoir des conséquences désastreuses en termes de vie humaine et de biens matériels. En effet, lorsqu'une flamme incidente se produit dans un compartiment, elle peut augmenter le risque de propagation du feu de celui-ci vers une autre pièce à travers une explosion de fumée représentant une menace pour les personnes pié-gées. Afin d’apporter des éléments de compréhension sur le comportement de ce type de flamme, de nombreuses études ont réalisé. Celles-ci s
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Asgyer, Abulkasem A. "Turbulent premixed impinging flames." Thesis, University of Manchester, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488202.

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Abdullatif, Tawfik A. "Turbulent diffusion impinging flames." Thesis, University of Manchester, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488402.

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Chien, Yu-Chien. "Electrical Aspects of Impinging Flames." Thesis, University of California, Irvine, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3682710.

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<p> This dissertation examines the use of electric fields as one mechanism for controlling combustion as flames are partially extinguished when impinging on nearby surfaces. Electrical aspects of flames, specifically, the production of chemi-ions in hydrocarbon flames and the use of convective flows driven by these ions, have been investigated in a wide range of applications in prior work but despite this fairly comprehensive effort to study electrical aspects of combustion, relatively little research has focused on electrical phenomena near flame extinguishment, nor for flames near impingemen
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Virk, Akashdeep Singh. "Heat Transfer Characterization in Jet Flames Impinging on Flat Plates." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/52985.

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The experimental work involves calculation of radial distribution of heat transfer coefficient at the surface of a flat Aluminium plate being impinged by a turbulent flame jet. Heat transfer coefficient distribution at the surface is computed from the measured heat flux and temperature data using a reference method and a slope method. The heat transfer coefficient (h) has a nearly bell shaped radial distribution at the plate surface for H/d =3.3. The value of h drops by 37 % from r/d =0 to r/d= 2. Upon increasing the axial distance to H/d = 5, the stagnation point h decreased by 15%. Adiabati
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Bergthorson, Jeffrey Myles Dimotakis Paul E. "Experiments and modeling of impinging jets and premixed hydrocarbon stagnation flames /." Diss., Pasadena, Calif. : California Institute of Technology, 2005. http://resolver.caltech.edu/CaltechETD:etd-05242005-165713.

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Wasson, Rachel Ann. "Separation of the Heat Transfer Components for Diffusion Flames Impinging onto Ceilings." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/50588.

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Two series of experiments were performed to determine the flow characteristics and to quantify the heat transfer components from a propane diffusion flame impinging onto a ceiling. A 0.3 m square sand burner with propane as the fuel type provided a steady-state fire. In the first series of experiments, measurements of gas temperature and velocity were made at 76 mm vertical intervals above the burner up to the ceiling. Fire heat release rates (HRRs) of 50 kW and 90 kW with free flame length to ceiling height ratios, Lf/H, of 2, 1.5, 1, 0.8, 0.85 were used to determine their effects on the m
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McDaid, Chloe. "Developing and implementing advanced optical diagnostics for the investigation of fuel and flow effects on impinging jet flames." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/5166/.

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Experimental diagnostic techniques have been utilised and developed to investigate the flame wall interaction for impinging flames of propane, methane, hydrogen and syngas. Thermal imaging has been used to evaluate the plate temperatures and radiation losses at steady state. A methodology has been developed for temperature dependent emissivity materials. Schlieren and direct imaging have been used to visualise flame shapes and flow structure. A methodology has been developed to quantify the relative effects of visual turbulent structures on the flame wall interaction. High speed schlieren has
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Wen, Ming-Houng, and 溫明晃. "A study on Jet Impinging Flame." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/06516648712659137193.

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碩士<br>元智大學<br>機械工程研究所<br>87<br>The structures of the jet impinging flame are observed under different impinging angles, Renolds number and fuel dilution. The impinging flame of methane fuel is therefore constructed at the stagnation plane. This simple mechanism may reduce the combustion length and the combustion efficiency. But there is a high temperature flashback in the root of flame. When the Renolds number increase, the temperature of impinging flame reduce at the stagnation point and the combustion efficiency increase. Along with the ration of volume nitrogen and volume methane
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Shu, Ke-Neng, and 徐可能. "A Study on Impinging Angle Effect on Jet-to-Jet Impinging Pulsation Flame." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/04022024674672860663.

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碩士<br>元智大學<br>機械工程研究所<br>89<br>Experimental investigations on the pulsating jet-impinging diffusion flame were executed. A solenoid valve was aligned upstream of the jet orifice and the methane fuel and the outlet-field condition were controlled in open-closed cycles from 2 Hz to 17 Hz. By changing some parameters such as impinging angle, outlet fuel Renault Number and fuel supplying pulsation frequencies, to confer the changing of the temperature contours of a impinging jet diffusion flame. Results show that a solenoid which is the impinging jet flame source supplying a regular disturbing fou
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Capítulos de libros sobre el tema "Impinging flame"

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Lim, S., Y. Yoon, C. Lee, and I. S. Jeung. "Effect of strain rate on NOx emission in opposed impinging jet flame combustor." In Laser Techniques for Fluid Mechanics. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-08263-8_32.

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Jeung, In-Seuck, and Kyung-Kook Cho. "Experimental Study of NOx Reduction by Impinging-Jet-Flame in a Closed Vessel with Opposed Dual Prechambers." In Clean Combustion Technologies. CRC Press, 2024. https://doi.org/10.1201/9781003580690-16.

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Ko, H. S., S. S. Ahn, S. H. Baek, and T. Kim. "Development of Combined Optical System for Thermal Analysis of Impinging Flames." In Experimental Mechanics in Nano and Biotechnology. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-415-4.71.

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"Modeling Impinging Flame Jets." In Computational Fluid Dynamics in Industrial Combustion. CRC Press, 2000. http://dx.doi.org/10.1201/9781482274363-21.

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Mahmud, Rizal, and Iis Rohmawati. "Effect of Injection Pressure on Local Temperature and Soot Emission Distribution of Flat-Wall Impinging Diesel Flame under Diesel Engine like-Condition." In Diesel Engines [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102867.

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Increasing heat transfer and heat transfer coefficient as the combined effect of impingement distance and injection pressure has been explored in the previous report. However, local temperature distribution was limited to the discussion. Clearly, investigation of near-wall temperature in the heat transfer analysis is absolutely necessary. This has a crucial effect on the local heat flux to understand the heat transfer phenomenon on the combustion chamber walls. The local temperature and KL factor were investigated by using a high-speed video camera and a two-color method by using a volume vess
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Actas de conferencias sobre el tema "Impinging flame"

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Asteman, H., W. Hartnagel, R. Salchinger, and W. Schwarz. "An Investigation of Failed Burner Tubes Used for Silicon Steel Strip Annealing – Damage Assessment and Possible Measures to Improve Performance." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09156.

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Abstract The production of high quality silicon steel strip requires high annealing temperatures, and at present the burners used are operating close to their upper temperature limit. This shortens their life-time considerably. The main failure of the burners is caused by a sharp breakage of the inner nozzle tube. This in turn diverts the flame and causes flame impingent on the outer tube casing. A failure investigation was performed in order to decide the exact cause and suggest measures in order to allow a life-time improvement and/or increase the temperature. Three burners at different stag
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Dong, Mingchun, and David G. Lilley. "Impinging Flame Prediction for CVD Diamond Synthesis." In ASME 1993 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/cie1993-0056.

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Abstract High-temperature flames impinging normally onto adiabatic surfaces are considered. These are important in the CVD (chemical vapor deposition) diamond synthesis method for diamond growth on surfaces. Problems of complex chemistry and the mechanism of diamond growth are discussed. The present paper has illustrated the effects of several key parameters on the substrate surface temperature and flowfield for CVD diamond synthesis by impinging oxy-acetylene jet flames. The studies were concerned with combustion flowfield predictions, oxy-acetylene flames, axisymmetric-vertical impingement o
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Cao, Jiale, Tie Li, Xinyi Zhou, et al. "The Similarity Study of the Transient Heat Transfer of Impinging Flames under CI Engine-Like Conditions." In 2024 Small Powertrains and Energy Systems Technology Conference. SAE International, 2025. https://doi.org/10.4271/2024-32-0119.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;The optimization of engine combustion systems based on scaled model experiments can reduce the cost of the development of large-bore marine diesel engines. Illustrating the transient heat transfer similarity of impinging flames would be beneficial to scaled engine model experiments in the development and optimization of large-bore compression ignition engines. In this work, the investigation of the similarity of the transient heat transfer of wall-impinging flames was performed in a high-pressure high-temperature constan
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Chander, Subhash, and Anjan Ray. "Investigation of Flame Structure for Laminar Methane/Air Flame Impinging on a Flat Surface." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88195.

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A combined experimental and numerical study has been conducted to investigate the impinging flame structure. Inflame temperature profiles were obtained and compared with corresponding simulated profiles. For detailed understanding of flame structure numerical simulations were carried out using commercial CFD code FLUENT. Simulated temperature, heat flux and species profiles were analyzed. Further investigations were done by plotting streamlines, velocity magnitude profiles and species profiles. It has been seen that bulk of the combustion products were burnt rapidly in the narrow reaction zone
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Kaushal, Arun, Gurpreet Singh, Subhash Chander, and Anjan Ray. "Heat Transfer Characteristics of Low Reynolds Number Turbulent Swirling LPG/Air Flame Impinging on a Flat Surface." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22366.

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An experimental study has been conducted to determine the heat transfer characteristics for low Reynolds number turbulent swirling LPG/Air flames impinging on a flat surface. Effect of variation of Reynolds number (3000–7000), dimensionless separation distance (H/d = 1 to 6) and equivalence ratio (φ = 0.8 to 2) on heat transfer characteristics has been determined at constant swirl number of 4. Further, experiments were also conducted to investigate the effect of swirl number on heat transfer characteristics at Re = 7000, φ = 1.0 and H/d = 5. It has been concluded that the major drawback of fla
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Huang, X. Q., C. W. Leung, and C. K. Chan. "Effect of Swirl Intensity on the Heat Performance of a Premixed Circular Impinging Flame Jet With Swirl Induced." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72750.

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Swirl has been successfully introduced to a small scale premixed circular impinging flame jet under low Reynolds number. The study on the flow and heat transfer characteristics of such a swirling impinging flame found that it could provide a more uniform heat flux and flame temperature distribution around the stagnation point. The swirl ratio, which is indicated by swirl angle and axial velocity at the exit of the nozzle is changed to investigate the effect of swirling intensity on the heat performance of the flame jet.
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Fan, Luming, Bruno Savard, Benoît Fond, et al. "Mechanisms Leading to Stabilization and Incomplete Combustion in Lean CH4/H2 Swirling Wall-Impinging Flames." In ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-104140.

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Abstract In gas turbines, confined highly turbulent flames unavoidably propagate in the vicinity of a relatively cool combustor liner, affecting both the local flame structure and global operation of the combustion system. In our recent work, we demonstrated, using simultaneous [OH] × [CH2O] PLIF and stereo-PIV, that lean CH4/H2 flames at a high Karlovitz number can present a highly broken structure near wall, highlighted by a diffuse CH2O cloud which suggests local quenching and incomplete oxidation. Such high Karlovitz numbers were achieved using an inclined plate, which substantially extend
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Ahmed, Ikram, and Ildar Sabirov. "Inverse Calculation of Flame Impingement Heat Transfer." In ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/fedsm2006-98450.

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Inverse calculations are presented here for the estimation of heat transfer from an impinging flame on a flat surface. This work is a preliminary exercise for estimating heat transfer from an impinging plasma jet, where direct measurements can be very difficult and costly, and the correlations based on air or water jet impingement measurements may not be applicable because of the very high temperature (and property) gradients. As the gas flame impinges on an initially cold flat plate, the temperature evolution on the backside is recorded using an infrared camera. The time–temperature data thus
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Gomez-Ramirez, David, Srinath V. Ekkad, Brian Y. Lattimer, Hee-Koo Moon, Yong Kim, and Ram Srinivasan. "Separation of Radiative and Convective Wall Heat Fluxes Using Thermal Infrared Measurements Applied to Flame Impingement." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52322.

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Flame impingement is critical for the processing and energy industries. The high heat transfer rates obtained with impinging flames are relevant in metal flame cutting, welding, and brazing; in fire research to understand the effects of flames on the structures of buildings; and in the design of high temperature combustion systems. Most of the studies on flame impingement are limited to surfaces perpendicular to the flame, and measurements are often performed using heat flux sensors (such as Schmidt-Boelter heat flux transducers) at discrete locations along the target surface. The use of in-si
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Singh, Gurpreet, and Subhash Chander. "Effect of Swirl Intensity on Heat Transfer Characteristics of Swirling Flame Impinging on a Flat Surface." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64178.

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An experimental investigation has been carried out to determine the effect of swirl intensity on heat transfer characteristics of swirling flame impinging on a flat surface. The swirl intensity was varied by using helical vane swirlers having angles of 15°, 30° and 60° (low, medium and high swirl). Qualitative flame structures were studied by taking direct photographs of impinging flames. Experiments were conducted for different helical vane swirlers at different dimensionless separation distances (H/d = 1–6) for fixed value of Reynolds number (Re = 5000) and equivalence ratio (ϕ = 1.0). A dip
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Informes sobre el tema "Impinging flame"

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Blaylock, Myra, Benjamin Schroeder, Angela LaFleur, and Gabriela Bran Anleu. Heat transfer through a box beam from an impinging hydrogen flame. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2372617.

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Felipe, Christina, Myra Blaylock, and Angela LaFleur. Heat Transfer Through a Passive Fire Protective Board from an Impinging Hydrogen Flame. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2369635.

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Kokkala, M. A., and W. J. Rinkinen. Some observations on the shape impinging diffusion flames. National Bureau of Standards, 1987. http://dx.doi.org/10.6028/nbs.ir.87-3505.

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