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Thematische Bibliographien / Ring-jet structure

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Auswahl der wissenschaftlichen Literatur zum Thema „Ring-jet structure“

Autor: Grafiati

Veröffentlicht am 18. Mai 2024

Zuletzt aktualisiert am 31. Juli 2025

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Zeitschriftenartikel zum Thema "Ring-jet structure"

1

Chen, Fengyang, Ping Lu, Dongqin Li, et al. "The Mixing Character within Oxidation Reactor in Titanium Dioxide Production by Chloride Process." Advances in Engineering Technology Research 1, no. 2 (2022): 48. http://dx.doi.org/10.56028/aetr.1.2.48.

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Chloride process is cost effective and environmental benefit, and the TiCl4 oxidation is the most important stage in this process. The structure of the jet ring has an obviously effect on the mixing of TiCl4 and O2 in the oxidation reactor, which is the key equipment in the production of titanium pigment. In this paper, the gas mixing condition with five jet rings of different structure was simulated and analyzed by computational fluid dynamics (CFD) simulation. The radial concentration distribution of TiCl4 and the non-uniformity of the mixture with different jet rings were obtained. The resu

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Chen, Fengyang, Ping Lu, Dongqin Li, et al. "The Mixing Character within Oxidation Reactor in Titanium Dioxide Production by Chloride Process." Advances in Engineering Technology Research 2, no. 1 (2022): 48. http://dx.doi.org/10.56028/aetr.2.1.48.

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Chloride process is cost effective and environmental benefit, and the TiCl4 oxidation is the most important stage in this process. The structure of the jet ring has an obviously effect on the mixing of TiCl4 and O2 in the oxidation reactor, which is the key equipment in the production of titanium pigment. In this paper, the gas mixing condition with five jet rings of different structure was simulated and analyzed by computational fluid dynamics (CFD) simulation. The radial concentration distribution of TiCl4 and the non-uniformity of the mixture with different jet rings were obtained. The resu

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3

ŠAJN GORJANC and DOMINIKA GLAŽAR. "The influence of air-jet and vortex yarn on functionality of woven fabric." Industria Textila 69, no. 02 (2018): 87–95. http://dx.doi.org/10.35530/it.069.02.1412.

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The basic intention of the research is to analyse the influence of air-jet and vortex yarn structure on woven fabric functionality. With the research, the air-jet and vortex yarn from the mixture of 65 % PES / 35 % CO fibres and fineness 20 tex were analysed. For comparison, the conventional ring-spun yarn was chosen from the mixture of 65 % PES/35 % CO fibres and fineness 20 tex. The woven fabric in the twill weave T1/3Z was produced from the air-jet, vortex and ring-spun yarn in the weft direction with two different weft densities (20 and 30 yarns per cm). In the first part of the study, the

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4

Lu, Ru-Sen, Keiichi Asada, Thomas P. Krichbaum, et al. "A ring-like accretion structure in M87 connecting its black hole and jet." Nature 616, no. 7958 (2023): 686–90. http://dx.doi.org/10.1038/s41586-023-05843-w.

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AbstractThe nearby radio galaxy M87 is a prime target for studying black hole accretion and jet formation1,2. Event Horizon Telescope observations of M87 in 2017, at a wavelength of 1.3 mm, revealed a ring-like structure, which was interpreted as gravitationally lensed emission around a central black hole3. Here we report images of M87 obtained in 2018, at a wavelength of 3.5 mm, showing that the compact radio core is spatially resolved. High-resolution imaging shows a ring-like structure of $${8.4}_{-1.1}^{+0.5}$$ 8.4 − 1.1 + 0.5 Schwarzschild radii in diameter, approximately 50% larger than

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HÜSEYİN GAZ, TÜRKSOY, AKKAYA TUĞBA, VURUŞKAN DENİZ, and ÜSTÜNTAĞ SÜMEYYE. "A comparative analysis of air-jet yarn properties with the properties of ring spun yarns." Industria Textila 69, no. 01 (2018): 11–16. http://dx.doi.org/10.35530/it.069.01.1419.

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Ring spinning is the most common method used among the short staple fibers spinning methods. Due to limitations of the production speed in the ring spinning, new spinning methods become more popular with each passing day. Air-jet spinning systems gathered attention with their market share in the new spinning methods. In this study, the properties of the air-jet yarns were comparatively analyzed with the properties of the equivalent Ring yarns, for both single and ply-twisted forms. It was found that the Rieter and Murata air-jet yarns do not show significant differences in terms of physical pr

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Suzuki, Bunji, Hiroshi Kurihara, and Jun-ichi Watanabe. "Detection of C2 Jets of Comet Austin 1989c1." Publications of the Astronomical Society of Japan 42, no. 6 (1991): L93—L97. https://doi.org/10.1093/pasj/42.6.l93.

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Abstract A CCD imaging observation of Comet Austin 1989c1 was carried out with a 60-cm telescope. By applying a ring masking technique to C2 images, we have found jet structures extending to about 30,000 km. Two morphological types of the jet structures were detected: one is a spiral type found in Comet P/Halley; the other is a straight structure in the anti-solar direction. This is the first case of gaseous-jet detection of a new comet in the Oort sense.

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Miyoshi, Makoto, Yoshiaki Kato, and Junichiro Makino. "The Jet and Resolved Features of the Central Supermassive Black Hole of M87 Observed with the Event Horizon Telescope (EHT)." Astrophysical Journal 933, no. 1 (2022): 36. http://dx.doi.org/10.3847/1538-4357/ac6ddb.

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Abstract We report the result of our independent image reconstruction of the M87 from the public data of the Event Horizon Telescope Collaborators (EHTC). Our result is different from the image published by the EHTC. Our analysis shows that (a) the structure at 230 GHz is consistent with those of lower-frequency very long baseline interferometry observations, (b) the jet structure is evident at 230 GHz extending from the core to a few milliarcsecond, although the intensity rapidly decreases along the axis, and (c) the “unresolved core” is resolved into three bright features presumably showing

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VERNET, A., G. A. KOPP, J. A. FERRÉ, and FRANCESC GIRALT. "Three-dimensional structure and momentum transfer in a turbulent cylinder wake." Journal of Fluid Mechanics 394 (September 10, 1999): 303–37. http://dx.doi.org/10.1017/s0022112099005807.

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Simultaneous velocity and temperature measurements were made with rakes of sensors that sliced a slightly heated turbulent wake in the spanwise direction, at different lateral positions 150 diameters downstream of the cylinder. A pattern recognition analysis of hotter-to-colder transitions was performed on temperature data measured at the mean velocity half-width. The velocity data from the different ‘slices’ was then conditionally averaged based on the identified temperature events. This procedure yielded the topology of the average three-dimensional large-scale structure which was visualized

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Longmire, Ellen K., and John K. Eaton. "Structure of a particle-laden round jet." Journal of Fluid Mechanics 236 (March 1992): 217–57. http://dx.doi.org/10.1017/s002211209200140x.

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The interaction of solid particles with the temporal features of a turbulent flow has direct relevance to problems in particle and spray combustion and the processing of particulate solids. The object of the present study was to examine the behaviour of particles in a jet dominated by vortex ring structures. An axisymmetric air jet laden with 55 μm glass particles was forced axially with an acoustic speaker to organize the vortex ring structures rolling up in the free shear layer downstream of the nozzle exit. Visualization studies of forced and unforced flow with Reynolds number of the order

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NOUMI, Yuhei, and Hiroaki HASEGAWA. "Visualization of vortex ring structure in a synthetic jet." Proceedings of the Fluids engineering conference 2018 (2018): OS5–25. http://dx.doi.org/10.1299/jsmefed.2018.os5-25.

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Dissertationen zum Thema "Ring-jet structure"

1

Manna, Sanjib Kumar. "Non-statistical fluctuation of singly charged particles produced in 16O-Ag/Br interaction at 200A Ge V/c." Thesis, University of North Bengal, 2021. http://ir.nbu.ac.in/handle/123456789/4761.

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Buchteile zum Thema "Ring-jet structure"

1

Tito Jose Carlos Solis and Romanel Celso. "Numerical Analysis 3D of a Deep Circular Excavation in the City of Rio de Janeiro." In Advances in Soil Mechanics and Geotechnical Engineering. IOS Press, 2014. https://doi.org/10.3233/978-1-61499-464-0-367.

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At present, due to the need for engineering works of large scale, we have the challenge of solving problems related to deep excavations, where instability problems often occur. In this paper is presented the analysis and validation of the excavation of the service well PS &ndash; 39, of the executive project of collectors for treatment of sanitary sewage, located in the city of Rio de Janeiro. This well was constructed using a contention system of a wall of secant column, ring structure type of &ldquo;shotcrete&rdquo; covering the columns, and a slab of &ldquo;jet grouting&

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Konferenzberichte zum Thema "Ring-jet structure"

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Han, Kewen, Zhe Zhang, Steven T. Wereley, and Je Hoon Oh. "Study of Factors in Coffee-Ring Structure Formation Using PIV Methods." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63231.

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The evaporating liquid droplet with suspended particles on a solid substrate may leave a ring-like structure along the droplet circumference under certain conditions, which is commonly known as the coffee ring phenomenon. This phenomenon has many interesting applications related to microfluidic problem such as self-assembly of colloidal particle, particle and biomolecule separation and concentration and ink-jet printing. Although much work has been done on this topic, not very much work focused on the fluid flow inside a droplet. In order to investigate the inner flow inside of the droplet, wa

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Lawandy, N. M. "Bichromatic emission in a homogeneously broadened ring dye laser: evidence of a new mode structure hierarchy." In International Laser Science Conference. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/ils.1986.tuf3.

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We present experimental measurements on a high-Q rhodamine 6G ring dye laser which was found to exhibit bichromatic emission with splittings of the order of 15–80 Å while operating in the range of 2–6 times above threshold in the bidirectional mode. Experiments were performed with the insertion of a low loss Faraday isolator (loss < 1%) in order to examine the effects of saturation gratings on the bichromatic emission. The results showed that even though the intracavity power went up, owing to the elimination of spatial hole burning, the bichromatic emission was completely eliminated in the

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Li, Yue, Jianqin Suo, and Hongyu Ju. "Experimental Study of Atomization Feature of Coaxial Parallel Flow Airspray Nozzle in Crossflow." In ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/gt2024-128692.

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Abstract To improve the atomization efficiency of the direct injection nozzle, a ring-shaped air layer is enveloped on the outer side of the liquid jet, forming a structure of co-flowing air atomization nozzle with liquid and gas phases. This paper experimentally studies its atomization characteristics when subjected to cross-flow injection in lateral air streams. The effects of ring-shaped air channel height (0.4mm, 0.7mm, 1.0mm, 1.3mm), different lateral air flow velocities (28.7m/s, 35.9m/s, 43.1m/s), and liquid flow rates (2.5g/s, 4.72g/s, 6.94g/s) on the atomization performance of the noz

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Wang, Hai-bo, Joon-wan Kim, Shinichi Yokota, and Kazuya Edamura. "Performance Evaluation of a Triangular-Prism-Slit Electrode Pair as an Electro-Conjugate Fluid Jet Generator." In ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control. ASMEDC, 2011. http://dx.doi.org/10.1115/dscc2011-6077.

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Electro-conjugate fluid (ECF) is a dielectric and functional fluid, which generates a powerful jet when electrodes inserted into it are subjected to a constant voltage of less than one thousand volts. As one essential research field on ECF, researchers have been conducting the study on electrodes. Several structures, e.g. planar parallel rod-like electrode array, ring-needle electrode pair and triangular-prism-slit (TPS) electrode pair, were proposed. Among them, the TPS electrode structure is often thought as the most promising candidate for future ECF applications thanks to its great merits

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Yang, Jinxin, Dongchan Kim, Sanghoon Kook, Kenneth S. Kim, and Chol-Bum Kweon. "Evaluation of swirl ratio effects on the flow fields using Particle Image Velocimetry and Flame image Velocimetry in a small-bore optical compression-ignition engine." In 2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting. Society of Automotive Engineers of Japan, 2023. http://dx.doi.org/10.4271/2023-32-0061.

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<div class="section abstract"><div class="htmlview paragraph">This study applies high-speed particle image velocimetry (HS-PIV) and flame image velocimetry (HS-FIV) to show flow fields under the effect of varied swirl ratios in a small-bore optical compression-ignition engine. The base swirl ratio and maximum swirl ratio conditions were applied to investigate structures, magnitude and turbulence distribution of the in-cylinder flow as well as the flow within the flame. For each swirl ratio, 100 individual cycles were measured for PIV analysis at motoring conditions and then another

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Miller, Terry A. "Ultrahigh resolution spectroscopy of free radicals." In OSA Annual Meeting. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.thr2.

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Rotationally resolved electronic spectra of moderately large free radicals such as CH3O, C2H5O, C5H5, and C6 F6+ have been obtained by using a pulsed amplified tunable ring dye laser system. This system is capable of producing laser radiation of moderately high energy, 5–10 mJ/pulse throughout the visible spectral region, and may be doubled into the UV. The radicals are produced by excimer laser photolysis of suitable precursors in a supersonic free jet expansion. Spectra of radicals with internal temperatures in the range of ~0.5–20 K have been recorded. The analyses of these spectra to obtai

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Pokhmurskii, V., M. Student, V. Dovhunyk, I. Sydorak, and H. Pokhmurska. "Wear Resistance of Arc-Sprayed Coatings from Powder Wires." In ITSC2002, edited by C. C. Berndt and E. Lugscheider. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2002. http://dx.doi.org/10.31399/asm.cp.itsc2002p0559.

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Abstract This paper presents the results of a study on arc-sprayed coatings made from powder-cored wire. The wires used consist of a ferrochromium core with additions of boron, aluminum, and carbon compacted in a steel sheath. The coatings are sprayed using a modified burner operated at 34 V and 140 A with an air jet pressure of 0.6 MPa. During spraying, specimens are rotated at a speed of 60 rpm. XRD analysis is used to examine the initial phase composition of the layers as well as friction-induced changes in the subsurface resulting from block-on-ring wear tests. Cross-sectional examination

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8

O’Connor, Jacqueline, and Tim Lieuwen. "Influence of Transverse Acoustic Modal Structure on the Forced Response of a Swirling Nozzle Flow." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-70053.

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This study describes continued investigations of the response of a swirling flow to transverse acoustic excitation. This work is motivated by transverse combustion instabilities in annular gas turbine engine architectures. This instability provides a spatially varying acoustic velocity disturbance field around the annulus, so that different nozzles encounter different acoustic disturbance fields. In this study, we simulate this effect by looking at a standing wave acoustic field where the nozzle is located at either a velocity anti-node, referred to as out-of-phase forcing, and a velocity node

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Li, Bangming, Qi Xiao, Yong Li, Xu Hu, and Wei Wang. "Numerical Study on Streamwise Vorticity and Entrainment Enhancement of a Round Jet." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81794.

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The jet pump has many outstanding advantages such as simple structure, high reliability, and low operation and maintenance costs and so on. Therefore, it has been widely used in nuclear industry fields. The entrainment ability of the jet pump is the core performance. It is generally recognized that, although the vorticity value of streamwise vortex is smaller than that of spanwise, it plays an important role in the entrainment process. Thus, a numerical simulation of streamwise vortex influence on the entrainment ability of a round jet is carried out. To enhance the entrainment of the round je

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Kim, Seon Ho, Kyeong Hwan Ahn, Jun Su Park, Eui Yeop Jung, Ki-Young Hwang, and Hyung Hee Cho. "Local Heat and Mass Transfer Characteristics for Multi-Layered Impingement/Effusion Cooling." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43831.

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Multi-layered impingement/effusion cooling is an advanced cooling configuration that combines impingement jet cooling, pin cooling, and effusion cooling. The arrangement of the pins is a critical design factor because of the complex heat transfer in the internal structure. Therefore, it is important to measure the local heat transfer at all internal surfaces as a function of the pin spacing. In this study, a naphthalene sublimation method was employed to measure the details of the heat/mass transfer at the internal surfaces, including the injection plate, effusion plates, and the pins. An stag

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