Relevant bibliographies by topics / Blow off

Academic literature on the topic 'Blow off'

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Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Blow off"

1

Norris, Thomas R. "Fluid blow‐off muffler." Journal of the Acoustical Society of America 91, no. 4 (April 1992): 2302. http://dx.doi.org/10.1121/1.403639.

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Norris, Thomas R. "Fluid blow‐off‐muffler." Journal of the Acoustical Society of America 80, no. 4 (October 1986): 1281. http://dx.doi.org/10.1121/1.394456.

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Schultze, V., and M. Wagner. "Blow-off of aluminium films." Applied Physics A Solids and Surfaces 53, no. 3 (September 1991): 241–48. http://dx.doi.org/10.1007/bf00324259.

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Lovejoy, Thomas E. "Will Expectedly the Top Blow off?" BioScience 45 (January 1995): S3—S6. http://dx.doi.org/10.2307/1312436.

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Gent, A. N., and L. H. Lewandowski. "Blow-off pressures for adhering layers." Journal of Applied Polymer Science 33, no. 5 (April 1987): 1567–77. http://dx.doi.org/10.1002/app.1987.070330512.

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Barber, J. P., and I. R. McNab. "Magnetic blow-off in armature transition." IEEE Transactions on Magnetics 39, no. 1 (January 2003): 42–46. http://dx.doi.org/10.1109/tmag.2002.805855.

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Okuda, Takayoshi, and Hiroyuki Adachi. "Interaction of Laser Blow-Off Blob with a Low-Pressure Gas Discharge." Japanese Journal of Applied Physics 28, Part 2, No. 6 (June 20, 1989): L1055—L1057. http://dx.doi.org/10.1143/jjap.28.l1055.

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Bakos, J. S., I. B. Földes, P. N. Ignácz, M. Á. Kedves, and J. Szigeti. "Radiation imprisonment in laser blow-off plasma." Laser and Particle Beams 10, no. 4 (December 1992): 715–21. http://dx.doi.org/10.1017/s0263034600004651.

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Sodium laser blow-off plasma of low temperature (in the 1-eV range) is generated by laser intensities of 108–5.109 W cm−2. Imprisonment of resonant laser light has been observed. These experiments show that basic processes of interaction of radiation with level populations can be studied in the visible range, where the atomic levels have longer lifetimes than the ionic ones in hot plasmas, corresponding to X-ray generation. The imprisonment and resonant effects with various experimental parameters were investigated together with the nonresonant scattering on fragments.
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Russell, Daniel H. "Just Blow It Off Because It’s Apocrine?" International Journal of Surgical Pathology 28, no. 4 (September 8, 2019): 412–14. http://dx.doi.org/10.1177/1066896919873070.

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Yuan, Ruoyang, James Kariuki, and Epaminondas Mastorakos. "Measurements in swirling spray flames at blow-off." International Journal of Spray and Combustion Dynamics 10, no. 3 (March 23, 2018): 185–210. http://dx.doi.org/10.1177/1756827718763559.

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Various characteristics of swirling spray flames of ethanol, n-heptane, n-decane, and n-dodecane have been measured at conditions far from and close to blow-off using phase Doppler anemometry and OH* chemiluminescence, OH-planar laser-induced fluorescence, and Mie scattering at 5 kHz. The blow-off transient has also been examined. The OH* showed that the two main heat release regions lie around the spray jet at the inner recirculation zone and along the outer shear layer between the inner recirculation zone and the annular air jet. The heat release region is shortened and more attached as the flame approached blow-off. Mie images and phase Doppler anemometry data showed a wider dispersion of the ethanol spray compared to the other fuels. Similar spatial distributions of the Sauter mean diameter were observed for the four fuels for identical flow conditions, with the Sauter mean diameter value increasing with decreasing fuel volatility, but with the exception of significant presence of droplets in the nominally hollow cone for the ethanol spray. The OH-planar laser-induced fluorescence measurements showed an intermittent lift-off from the corner of the bluff body and the average lift-off height decreased with increasing air velocity, with less extinction along the inner flame branch especially for the heavier fuels. At the blow-off conditions, local extinctions appeared at both flame branches. The blow-off process followed a gradual reduction of the size of the flame, with the less volatile fuels showing a more severe flame area reduction compared to the condition far from blow-off. The average blow-off duration, [Formula: see text], calculated from the evolution of the area-integrated OH* signal, was a few tens of milliseconds and for all conditions investigated the ratio [Formula: see text] /( D/ UB) was around 11, but with large scatter. The measurements provide useful information for validation of combustion models focusing on local and global extinction.
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Dissertations / Theses on the topic "Blow off"

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Cavaliere, Davide Egidio. "Blow-off in gas turbine combustors." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/265575.

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This thesis describes an experimental investigation of the flame structure close to the extinction and the blow-off events of non-premixed and spray flames stabilized on an axisymmetric bluff body in a confined swirl configuration. The comparison of flames of different canonical types in the same basic aerodynamic field allows insights on the relative blow-off behaviour. The first part of the thesis describes several velocity measurements in non-reacting and reacting flows. The main usefulness of this data is to provide the aerodynamic flow pattern and some discussion on the velocity field and the related recirculation zones. The velocity and turbulence information obtained are particularly useful for providing data, which is crucial for validation of computational models. The second part describes an experimental investigation of non-premixed stable flames very close to the blow-off condition. The measurements included visualisation of the blow-off transient with 5 kHz OH* chemiluminescence, which allowed a quantification of the average duration of the blow-off transient. OH-PLIF images at 5 kHz for flames far from and close to extinction showed that the non-premixed flame intermittently lifts-off the bluff body, with increasing probability as the fuel velocity increases. The flame sheet shows evidence of localised extinctions, which are more pronounced as approaching blow-off. The measurements include blow-off limits and their attempted correlation. It was found that a correlation based on a Damkohler number does a reasonable job at collapsing the dataset. The final part examines the blow-off behaviour of swirling spray flames for two different fuels: n-heptane and n-decane. The measurements include blow-off limits and their att~mpted correlation, visualisation of the blow-off transient with 5 kHz OH* chemiluminescence, and the quantification of the average duration of the blow-off transient. It was found that the average duration of the blow-off event is in order of the tens of ms for both spray flames (10-16 ms). The blow-off event is therefore a relatively slow process for the spray ~ames using n-heptane and decane fuels. This suggests that control measures, such as fast fuel injection, coupled with appropriate detection, such as with chemiluminescence monitoring, may have a reasonable chance of success in keeping the flame alight very close to the blow-off limit. These results, together with those obtained for the non-premixed gaseous case form a wide body of experimental data available for the validation of turbulent flame models. The quantification of some properties during the blow-off transient can assist studies of extinction based on large-eddy simulation that have a promise of capturing combustion transients.
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Kariuki, James Mwangi. "Turbulent premixed flame stabilization and blow-off." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607695.

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Yuan, Ruoyang. "Measurements in swirl-stabilised spray flames at blow-off." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709345.

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Cellier, Antony Hermann Guy. "Detection and Identification of Instability and Blow-off/Flashback Precursors in Aeronautical Engines using Deep Learning techniques." Thesis, KTH, Kraft- och värmeteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-272079.

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The evolution of injection processes toward more fuel efficient and less polluting combustion systems tend to make them more prone to critical events such as Thermo-Acoustic Instabilities, Blow-Off and Flash-Back. Moreover, the addition of Di-Hydrogen as a secondary or as the main fuel is in discussion by aeronautical engines manufacturers. It drastically modifies the stability of the system and thus raise several interrogations concerning the multiplicity of its use. Being able to predict critical phenomena becomes a necessity in order to efficiently operate a system without having to pre-test every configuration and without sacrificing the safety of the user. Based on Deep Learning techniques and more specifically Speech Recognition, the following study presents the steps to develop a tool able to successfully detect and translate precursors of instability of an aeronautical grade swirled injector confined in a tubular combustion chamber. The promising results obtained lead to proposals for future transpositions to real-size systems.
Utvecklingen av injektionsprocesser mot mer bränsleeffektiva och mindre förorenande förbränningssystem, tenderar att göra dem mer benägna att utsättas för kritiska händelser som Thermo-Acoustic Instabilities, Blow-Off och Flash-Back. Dessutom diskuterar flygmotorkonstruktörer möjligheten att använda Dihydrogen som sekundärt eller som huvudbränsle. Det modifierar drastiskt systemets stabilitet och det väcker frågan hur man kan använda det effektivt. Att kunna förutsäga kritiska fenomen blir en nödvändighet för att använda ett system utan att behöva att på förhand testa varje konfiguration och utan att reducera användarens säkerhet. Baserat på Deep-Learning-tekniker och Speech-Recognition-tekniker, presenterar följande studie stegen för att utveckla ett verktyg som kan upptäcka och översätta föregångare till instabilitet hos en swirled flygmotorerinsprutningspump som är innesluten i en förbränningskammare. De lovande resultaten leder till idéer om hur man kan anpassa det här verktyg till ett system i verklig storlek.
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Kedia, Kushal Sharad. "Development of a multi-scale projection method with immersed boundaries for chemically reactive flows and its application to examine flame stabilization and blow-off mechanisms." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/85234.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2013.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 193-201).
High-fidelity multi-scale simulation tools are critically important for examining energy conversion processes in which the coupling of complex chemical kinetics, molecular transport, continuum mixing and acoustics play important roles. The objectives of this thesis are: (i) to develop a state-of-the-art numerical approach to capture the wide spectra of spatio-temporal scales associated with reacting flows around immersed boundaries, and (ii) to use this tool to investigate the underlying mechanisms of flame stabilization and blow-off in canonical configurations. A second-order immersed boundary method for reacting flow simulations near heat conducting, grid conforming, solid object has been developed. The method is coupled with a block-structured adaptive mesh refinement (SAMR) framework and a semi-implicit operator-split projection algorithm. The immersed boundary approach captures the flame-wall interactions. The SAMR framework and the operator-split algorithm resolve several decades of length and time efficiently. A novel "buffer zone" methodology is introduced to impose the solid-fluid boundary conditions such that symmetric derivatives and interpolation stencils can be used throughout the interior of the domain, thereby maintaining the order of accuracy of the method. Near an immersed solid boundary, single-sided buffer zones are used to resolve the species discontinuities, and dual buffer zones are used to capture the temperature gradient discontinuities. This eliminates the need to utilize artificial flame anchoring boundary conditions used in existing state-of-the-art numerical methods. As such, using this approach, it is possible for the first time to analyze the complex and subtle processes near walls that govern flame stabilization. The approach can resolve the flow around multiple immersed solids using coordinate conforming representation, making it valuable for future research investigating a variety of multi-physics reacting flows while incorporating flame-wall interactions, such as catalytic and plasma interactions. Using the numerical method, limits on flame stabilization in two canonical configurations: bluff-body and perforated-plate, were investigated and the underlying physical mechanisms were elucidated. A significant departure from the conventional two-zone premixed flame-structure was observed in the anchoring region for both configurations. In the bluff-body wake, the location where the flame is initiated, preferential diffusion and conjugate heat exchange furnish conditions for ignition and enable streamwise flame continuation. In the perforated-plate, on the other hand, a combination of conjugate heat exchange and flame curvature is responsible for local anchoring. For both configurations, it was found that a flame was stable when (1) the local flame displacement speed was equal to the flow speed (static stability), and (2) the gradient of the flame displacement speed normal to its surface was higher than the gradient of the flow speed along the same direction (dynamic stability). As the blow-off conditions were approached, the difference between the former and the latter decreased until the dynamic stability condition (2) was violated. The blowoff of flames stabilized in a bluff-body wake start downstream, near the end of the combustion-products dominated recirculation zone, by flame pinching into an upstream and a downstream propagating sections. The blow-off of flames stabilized in flow perforated-plate wake start in the anchoring region, near the end of the preheated reactants-filled recirculation zone, with the entire flame front convecting downstream. These simulations elucidated the thus far unknown physics of the underlying flame stabilization and blow-off mechanisms, understanding which is crucial for designing flame-holders for combustors that support continuous burning. Such an investigation is not possible without the advanced numerical tool developed in this work. Based on the insight gained from the simulations, analytical models were developed to describe the dynamic response of flames to flow perturbations in an acoustically coupled environment. These models are instrumental in optimizing combustor designs and applying active control to guarantee dynamic stability if necessary.
by Kushal Sharad Kedia.
Ph. D.
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Kypraiou, Anna-Maria. "Experimental investigation of the response of flames with different degrees of premixedness to acoustic oscillations." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275743.

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This thesis describes an experimental investigation of the response of lean turbulent swirling flames with different degrees of premixedness (i.e. different mixture patterns) to acoustic forcing using the same burner configuration and varying only the fuel injection strategy. Special emphasis was placed on the amplitude dependence of their response. Also, the behaviour of self-excited fully premixed flames was examined. kHz OH* chemiluminescence was used to study qualitatively the heat release response of the flames, while kHz OH Planar Laser Induced Fluorescence (PLIF) was employed to understand the response of the flame structure and the behaviour of the various parts of the flame. The Proper Orthogonal Decomposition (POD) method was used to extract the dominant structures of the flame and their periodicity. In the first part of the thesis, self-excited oscillations were induced by extending the length of the duct downstream of the bluff body. It was found that the longer the duct length and the higher the equivalence ratio, the stronger the self-excited oscillations were, with the effect of duct length being much stronger. The dominant frequencies of the system were found to increase with equivalence ratio and bulk velocity and decrease with duct length. For some conditions, three simultaneous periodic motions were observed, where the third motion oscillated at a frequency equal to the difference of the other two frequencies. A novel application of the POD method was proposed to estimate the convection velocity from the most dominant reaction zone structures detected by OH* chemiluminescence imaging. For a range of conditions, the convection velocity was found to be in the range of 1.4-1.7 bulk flow velocities at the inlet of the combustor. In the second part, the response of fully premixed, non-premixed with radial fuel injection (NPR) and axial fuel injection (NPA) flames was investigated and compared. All systems exhibited a nonlinear response to acoustic forcing. The highest response was observed by the NPR flame, followed by the fully premixed and the non-premixed with axial fuel injection flame. The proximity of forced flames to blow-off was found to be critical in their heat release response, as close to blow-off the flame response was significantly lower than that farther from blow-off. In the NPR and NPA systems, it was shown that the acoustic forcing reduced the stability of the flame and the stability decreased with the increase in forcing amplitude. In the fully premixed system, the flame area modulations constituted an important mechanism of the system, while in the NPR system both flame area and equivalence ratio modulations were important mechanisms of the heat release modulations. The quantification of the local response of the various parts of the flame at the forcing frequency showed that the ratio RL (OH fluctuation at 160 Hz to the total variance of OH) was greater in the inner shear layer region than in the other parts in the case of NPR and NPA flames. In fully premixed flames, greater RL values were observed in large regions on the downstream side of the flame than those in the ISL region close to the bluff body. The ratio of the convection velocity to the bulk velocity was estimated to be 0.54 for the NPR flame, while it was found to be unity for the respective fully premixed flame. In the last part of the thesis, the response of ethanol spray flames to acoustic oscillations was investigated. The nonlinear response was very low, which was reduced closer to blow-off. The ratio RL was the highest in the spray outer cone region, downstream of the annular air passage, while RL values were very low in the inner cone region, downstream of the bluff body. Unlike NPR and fully premixed flames, in case of spray and NPA systems, it was found that forcing did not affect greatly the flame structure. The understanding of the nonlinear response of flames with different degrees of premixedness in a configuration relevant to industrial systems contributes to the development of reliable flame response models and lean-burn devices, because the degree of premixedness affects greatly the flame response. Also, the understanding of the behaviour of forced spray flames is of great interest for industrial applications, contributing to the development of thermoacoustic models for liquid fuelled combustors. Finally, the estimation of the convection velocity is of importance in the modelling of self-excited flames and flame response models, since the convection velocity affects the flame response significantly.
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de, Rooy S. C. "Improved efficiencies in flame weeding." Lincoln University, 1992. http://hdl.handle.net/10182/18.

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Possible areas of improving the efficiencies of the Lincoln University flame weeder are identified and investigated. The Hoffmann burner initially used in the Lincoln University flame weeder was found not to entrain sufficient air to allow complete combustion of the LPG used. A new burner, the Modified Lincoln University burner, was designed to improve the entrainment of air. Results show that the new design entrained sufficient air to theoretically allow complete combustion of the LPG, and this resulted in a 22.7% increase in heat output per Kg of LPG used over the Hoffmann burner. Temperature x time exposure constants required to kill weeds 0 - 15, 15 - 30, and 30 - 45 mm in size, were found to be respectively 750, 882, and 989 degrees Celsius.Seconds. These constants can be used to calculate the maximum speed of travel an operator can use a flame weeder at, once the temperature profile underneath its shields are established at various travel speeds, and therefore ensure that the flame weeder is used at its maximum efficiency. The constants can also be used to establish the cost efficiency of any flame weeder (in $/Ha), depending on the size of the weeds to be treated. The materials and methods used in establishing the temperature x time exposure constants can be used to establish the temperature x time exposure constant of any weed species at any size.
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Lentz, Alycia Faith. "Ready to blow your mind: Andy Warhol's Exploding Plastic Inevitable." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/3128.

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Andy Warhol's Exploding Plastic Inevitable (EPI) was a drug-fueled rock concert-cum-multimedia art event where layers of mediation mixed with immediate experience: The Velvet Underground performed their innovative music in front of films of themselves performing, Factory Superstars danced and performed poetry, various Warhol films projected on the walls, flashing lights flickered on mirrored surfaces, and a crowd of spectators – both famous and unknown – packed in to see and be seen, to dance and trip into the early hours of the morning. The experience of the EPI was a potent combination of alienation, mediation, and commercialization. The EPI was a promotional vehicle for Warhol, Warhol's Factory crew, and the Velvet Underground, but is also a complex example of spectacle that has been under-analyzed in recent scholarship. The EPI's unabashed emphasis on marketing, packaging, consumer goods, and empty celebrity are all manifestations of fears of late capitalist excess, but beneath the veneer of vapidity was an undercurrent of counterculture political activism and social awareness. Original contributions include cultural analysis, interpretation of contemporary reviews and reports, examination of the event's lack of art historical presence, and incorporation of music scholarship into the Warhol historical canon.
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Hoffman, Daniel Eugene. "Predicting and preventing hydraulic blow-outs during Hhigh velocity jet cleaning of sanitary sewer lines." Cincinnati, Ohio : University of Cincinnati, 2009. http://www.ohiolink.edu/etd/view.cgi?acc_num=ucin1236010806.

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Thesis (M.S.)--University of Cincinnati, 2009.
Advisors: Steven Buchberger PhD (Committee Chair), James Uber PhD (Committee Member), Michael Flanders PE (Committee Member). Title from electronic thesis title page (viewed April 26, 2009). Includes abstract. Keywords: sewer overflow; blowout; sewer maintenance; jet cleaning; flushvac; GIS; risk. Includes bibliographical references.
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Jues, Thomas. "Modélisation et simulation des gaz de blow-by dans un décanteur automobile." Phd thesis, Paris, ENSAM, 2010. http://pastel.archives-ouvertes.fr/pastel-00564743.

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L'objectif de cette thèse sur la modélisation des décanteurs automobiles est de mettre au point un outil de simulation numérique permettant de se substituer à un banc organe pour déterminer l'efficacité des décanteurs à l'étape de conception. Après avoir étudié la composition du blow-by sur banc moteur et cela pour différents points de fonctionnement du moteur, nous avons pu comparer la pertinence des différents outils de mesure granulométrique choisis (PCS, ELPI, TEOM) en fonction du spectre granulométrique émis par le moteur. Le PCS a été retenu comme l'outil le plus adéquat en fonction des tailles de gouttes sur lesquelles nous souhaitions avoir des informations. En parallèle, nous avons mené des investigations pour mettre au point une méthodologie de calcul permettant de simuler l'efficacité du décanteur. Le suivi des particules d'huile s'effectue grâce à une simulation lagrangienne. Les forces à prendre en compte ont été déterminées grâce à des expériences numériques simples permettant de verifier si les différentes expressions de ces forces trouvées dans la littérature étaient compatibles des conditions de calculs rencontrées dans les décanteurs. Une autre question soulevée par l'utilisation d'une modélisation lagrangienne dans la littérature, est celle de la prise en compte ou non de la dispersion turbulente. L'étude proposée dans cette thèse nous a permis de montrer que l'implémentation d'un modèle de dispersion turbulente rudimentaire ne permet pas d'obtenir des résultats satisfaisants. La faisabilité de la mise au point d'une méthodologie de calcul fiable de l'efficacité du décanteur repose finalement sur la modification du type de maillage utilisé ainsi que le traitement du calcul de l'écoulement à la paroi. Nous avons montré dans cette thèse que la mise en place d'un maillage raffiné aux parois reposant sur des prismes avec un Y+ =1, associé à une loi de parois à deux couches permettait d'obtenir des résultats satisfaisants en terme de prédiction de l'efficacité du décanteur.
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Books on the topic "Blow off"

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The blow-off. New York: Simon & Schuster Paperbacks, 2011.

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Underdahl, Brian. PS2: Blow the lid off! Berkeley, Calif: McGraw-Hill/Osborne, 2002.

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Underdahl, Brian. Xbox: Blow the lid off! Berkeley, Calif: McGraw-Hill/Osborne, 2002.

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1963-, Freiberg Jackie, ed. Guts!: Companies that blow the door off business-as-usual. New York: Currency Doubleday, 2004.

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Freiberg, Kevin. Blow the doors off business as usual!: Seven choices for curing the "dead people working" syndrome. Nashville: Thomas Nelson, 2007.

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Peg, Rosen, ed. The girlfriends' guide to baby gear: What to buy, what to borrow, and what to blow off! New York: Berkley Pub. Co., 2003.

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Bernabei, Gretchen S. Crunchtime: Lessons to help students blow the roof off writing tests--and become better writers in the process. Portsmouth, NH: Heinemann, 2009.

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Ellerbee, Linda. Girl reporter blows lid off town! New York: HarperTrophy, 2000.

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Littauer, Florence. Blow away the black clouds. New York: Phoenix Press, 1987.

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Practical guide to injection blow molding. Boca Raton, Fla: Taylor & Francis, 2007.

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Book chapters on the topic "Blow off"

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Liddiard, Kirsty. "‘…They finish off with a blow job’." In The Intimate Lives of Disabled People, 128–60. Title: The intimate lives of disabled people / Kirsty Liddiard. Description: New York: Routledge, 2018.: Routledge, 2017. http://dx.doi.org/10.4324/9781315556598-7.

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Spindler, Jacob, Rico Schulze, Kevin Schleifer, and Hendrik Richter. "EDA-Based Optimization of Blow-Off Valve Positions for Centrifugal Compressor Systems." In Applications of Evolutionary Computation, 437–52. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72699-7_28.

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Derjaguin, B. V., and V. V. Karasev. "Study of the Boundary Viscosity of Organic Liquids by the Blow-Off Method." In Surface and Colloid Science, 221–64. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3002-2_6.

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Berry, Colin, Jason M. Meyer, Marjorie A. Hoy, John B. Heppner, William Tinzaara, Clifford S. Gold, Clifford S. Gold, et al. "Blow Flies." In Encyclopedia of Entomology, 538. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_387.

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Mehlhorn, Heinz. "Blow Flies." In Encyclopedia of Parasitology, 351. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_3755.

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Mehlhorn, Heinz. "Blow Flies." In Encyclopedia of Parasitology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_3755-1.

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Gooch, Jan W. "Siamese Blow." In Encyclopedic Dictionary of Polymers, 661. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_10610.

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Lee, Norman C. "Blow Molding." In Handbook of Plastic Processes, 305–85. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/0471786586.ch5.

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Gooch, Jan W. "Blow Molding." In Encyclopedic Dictionary of Polymers, 88–89. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_1468.

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Palladino, Leo. "Blow Waving." In The Principles and Practice of Hairdressing, 92–97. London: Macmillan Education UK, 1989. http://dx.doi.org/10.1007/978-1-349-19898-6_8.

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Conference papers on the topic "Blow off"

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Ahrens, Thomas J. "Giant Impact Induced Atmospheric Blow-Off." In SHOCK COMPRESSION OF CONDENSED MATTER - 2003: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2004. http://dx.doi.org/10.1063/1.1780504.

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Hodizc, Erdzan, Christophe Duwig, Robert Szasz, Oliver Krüger, and Laszlo J. Fuchs. "Large Eddy Simulation of lean blow off." In 21st AIAA Computational Fluid Dynamics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-3080.

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Huang, Xia, Yong Huang, Fang Wang, and Bin Hu. "Bunsen Flame Blow-Off: Velocity-Matching Method." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45664.

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The effect of the incoming velocity on the anchoring point of a Bunsen flame is studied by theoretical analysis and experiments, since the anchoring point is essential to the flame holding. In order to predict the locations of the anchoring point, the velocity-matching (VM) method, which compares the profile of the flow velocity of the cold flow with that of the flame speed near the exit of a Bunsen burner, is employed together with the consideration of the cold wall quenching. The anchoring point is predicted to be located at x=Cx1u0+Cqdq0u01/2+Cx2dq0y=−Cy1SL01/2u0−1+Cy2SL0u0−2+Cy3SL01/2u0−2+Cy4. The experiment on the variation of the anchoring point with the incoming gas velocity is done with a laminar premixed methane-air flame. The equivalence ratios of the pre-mixture are 1.0, 0.9, and 0.8, respectively, and the incoming velocity is less than 2.00 m/s in the experiment. The results show that the anchoring point moves downstream and towards instead of away from the centerline of the jet as estimated by Bernard Lewis with increasing incoming gas velocity. The prediction of the locations of the anchoring point by VM method agrees well with the experiment within the uncertainty of less than ±20%.
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Blunck, David L., Steven Zeppieri, Justin T. Gross, Scott Stouffer, and Meredith B. Colket. "Hydrocarbon Emissions from a WSR Near Lean Blow-Off." In 53rd AIAA Aerospace Sciences Meeting. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-0415.

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Nassini, Pier Carlo, Daniele Pampaloni, Antonio Andreini, and Roberto Meloni. "Large Eddy Simulation of Lean Blow-Off in a Premixed Swirl Stabilized Flame." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90856.

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Abstract Modern gas turbines usually adopt very lean premixed flames to meet the current strict law restrictions on nitric oxides emissions. In such devices, strong combustion instabilities and blow-off susceptibility often prevent from achieving a stable flame in leaner conditions. Numerical models to predict the lean blow-off in turbulent flames are essential to prevent such instabilities, but the simulation of blow-off still represents a challenge, requiring the appropriate modelling for the turbulence-chemistry interactions and the highly transient behaviour of the flame near the extinction limit. The present work explores the capabilities of the widely-used Flamelet Generated Manifold model in predicting the lean blow-off of a turbulent swirl-stabilized premixed flame within LES framework. An atmospheric premixed methane-air flame, experimentally studied at the University of Cambridge, is firstly analyzed in three operating conditions approaching blow-off to validate the numerical setup. An extended Turbulent Flame Closure (TFC) model, implemented within the FGM framework in Fluent to introduce the effect of stretch and heat loss on the flame, reproduces the evolution of the key flame characteristics. Then, the chosen setup is used to study the blow-off inception and the dynamics in two conditions with different flow rate. An accelerated numerical procedure with progressive step reductions of equivalence ratio is used to trigger the blow-off. The extinction equivalence ratio is predicted quite accurately, showing that the Extended TFC is suitable for the study of the blow-off, without an increase in computational cost. The validity of the model could be extended, allowing the study of lean blow-off in realistic conditions and complex flames of gas turbine combustors.
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Leung, Ho Yin, Efstathios Karlis, Yannis Hardalupas, and Andrea Giusti. "Evaluation of Blow-Off Dynamics in Aero-Engine Combustors Using Recurrence Quantification Analysis." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59484.

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Abstract The lean blow-out performance of an engine and the ability to re-ignite the flame, especially at high-altitude conditions, are important aspects for the safe operability of airplanes. The operability margins of the engine could be extended if it was possible to predict the occurrence of flame blowout from in-flight measurements and take actions to dynamically control the flame behaviour before complete extinction. In this work, the use of Re-currence Quantification Analysis (RQA), an established tool for the analysis of non-linear dynamical systems, is explored to reconstruct and study the blow-off dynamics starting from pressure measurements taken from blow-off experiments of an engine rig. It is shown that the dynamics of the combustor exhibit chaotic characteristics far away from blow-off and that the dynamics become more coherent as the blow-off condition is approached. The degree of determinism and recurrence rate are studied during the entire combustor’s dynamics, from stable flame to flame extinction. It is shown that the flame extinction is anticipated by an increase of the degree of determinism and recurrence rate at all investigated conditions, which indicates intermittent behavior of the combustor before the blow-off condition is reached. Therefore, in the configuration investigated here, the determinism and the recurrence rate of the system could be good predictors of blow-off occurrence and could potentially enable control actions to avoid flame extinction. This study opens up new possibilities for engine control and operability. The development of real-time RQA should be addressed in future research.
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Kariuki, James, Nicholas Worth, James Dawson, and Epaminondas Mastorakos. "Visualisation of blow-off events of two interacting turbulent premixed flames." In 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-692.

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Cioffi, Marco, Enrico Puppo, and Andrea Silingardi. "Fanno Design of Blow-Off Lines in Heavy Duty Gas Turbine." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95024.

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In typical heavy duty gas turbines the multistage axial compressor is provided with anti-surge pipelines equipped with on-off valves (blow-off lines), to avoid dangerous flow instabilities during start-ups and shut-downs. Blow-off lines show some very peculiar phenomena and somewhat challenging fluid dynamics, which require a deeper regard. In this paper the blow-off lines in axial gas turbines are analyzed by adopting an adiabatic quasi-unidimensional model of the gas flow through a pipe with a constant cross-sectional area and involving geometrical singularities (Fanno flow). The determination of the Fanno limit, on the basis of the flow equation and the second principle of thermodynamics, shows the existence of a critical pipe length which is a function of the pipe parameters and the initial conditions: for a length greater than this maximum one, the model requires a mass-flow reduction. In addition, in the presence of a regulating valve, so-called multi-choked flow can arise. The semi-analytical model has been implemented and the results have been compared with a three-dimensional CFD analysis and cross-checked with available field data, showing a good agreement. The Fanno model has been applied for the analysis of some of the actual machines in the Ansaldo Energia fleet under different working conditions. The Fanno tool will be part of the design procedure of new machines. In addition it will define related experimental activities.
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Slade, Paul G., and Erik D. Taylor. "The repulsion or blow-off force between closed contacts carrying current." In 2016 IEEE 62nd IEEE Holm Conference on Electrical Contacts (Holm). IEEE, 2016. http://dx.doi.org/10.1109/holm.2016.7780025.

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Tyliszczak, A., and Epaminondas Mastorakos. "LES/CMC of blow-off in a liquid fueled swirl burner." In THMT-12. Proceedings of the Seventh International Symposium On Turbulence, Heat and Mass Transfer Palermo, Italy, 24-27 September, 2012. Connecticut: Begellhouse, 2012. http://dx.doi.org/10.1615/ichmt.2012.procsevintsympturbheattransfpal.360.

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Reports on the topic "Blow off"

1

Davis, E. J., and R. Periasamy. Optical Properties and Aerodynamic Drag Characteristics of Blow-Off Particulates. Fort Belvoir, VA: Defense Technical Information Center, August 1985. http://dx.doi.org/10.21236/ada170626.

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Yokel, Felix Y. Effect of blow count on energy transfer in SPT. Gaithersburg, MD: National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nbs.ir.88-3765.

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Gent, A. N., and M. Hindi. Blow-Out of Rubber Blocks Due to Internal Heating. Fort Belvoir, VA: Defense Technical Information Center, November 1989. http://dx.doi.org/10.21236/ada215730.

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Lee, S. Y. Beam Life Time in the Presence of Beam Blow Up. Office of Scientific and Technical Information (OSTI), November 1985. http://dx.doi.org/10.2172/1119267.

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Kuno, Koji, Katuya Inuzuka, Osamu Kohinata, Kazuhito Nishigaki, Akira Hasuo, and Hiroyuki Osada. Development of the Appearance Blow Hole Inspection Technology of the Piston. Warrendale, PA: SAE International, September 2005. http://dx.doi.org/10.4271/2005-08-0602.

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Gelderloos, Renske. Dynamics of Air-Blown Dimples. Fort Belvoir, VA: Defense Technical Information Center, June 2010. http://dx.doi.org/10.21236/ada557333.

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Johnson, Jared L., Jeffrey L. Davis, and Catherine C. Nestler. Topical Lime Application for the Management of Munitions Constituents Following Blow-in-Place Operations. Fort Belvoir, VA: Defense Technical Information Center, June 2010. http://dx.doi.org/10.21236/ada536677.

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Mellor, Malcolm, and Gregor Fellers. Concentration and Flux of Wind-Blown Snow. Fort Belvoir, VA: Defense Technical Information Center, June 1986. http://dx.doi.org/10.21236/ada170504.

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Walsh, Michael R., Marianne E. Walsh, Guy Ampleman, Sonia Thiboutot, and Deborah D. Walker. Comparison of Explosives Residues from the Blow-in-Place Detonation of 155-mm High-Explosive Projectiles. Fort Belvoir, VA: Defense Technical Information Center, June 2006. http://dx.doi.org/10.21236/ada450471.

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Утяшев, И. М., and А. М. Ахтямов. Program for the solution of a direct and return task about longitudinal blow to a core. Science and Innovation Center Publishing House, 2014. http://dx.doi.org/10.12731/ofernio.2014.20515.

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