Academic literature on the topic 'Disks'

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Journal articles on the topic "Disks"

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Kiyamov, Asror Z. "Comb-forming roller with elastic rods." E3S Web of Conferences 390 (2023): 06041. http://dx.doi.org/10.1051/e3sconf/202339006041.

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A design diagram of comb formation roller in resilient stems is given. Comb-forming roller consists of support and small discs, as well as elastic rods. Elastic rods are installed along the perimeter of the diameter of the disks through their holes. Analytical dependences and mathematical models are obtained for determining the distance between disks, the diameter of disks, the diameter, length and number of elastic rods. One-factor experiments were carried out to substantiate the diameter of the disks and the number of rods. It was found that with the length of the elastic rods of the comb-fo
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Andrulionis, Robertas, and Ieva Švagždytė. "RESEARCH OF EFFECTIVENESS OF DISK SHAPED ELEMENTS FOR OIL REMOVAL / DISKINIŲ NAFTOS SURINKIMO ELEMENTŲ EFEKTYVUMO TYRIMAS." Mokslas – Lietuvos ateitis 7, no. 6 (2016): 624–27. http://dx.doi.org/10.3846/mla.2015.851.

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Influence of grooved disc rotation speed and inclination angle of fluid from surface on amount of removed liquid, was studied in this article. Stand with possibility to change disc, rotation speed of disc and angle was designed and assembled. U and V shaped groove discs were used. Edible and industrial oil SAE 80W90 were removed from water surface and collected into the flash. Optimal disc rotation speed, which is 15 rpm and disc inclination angle 00 were determined after analysis of results. Straipsnyje išnagrinėta skirtingais griovėtais diskais nuo vandens paviršiaus surenkamo skysčio ir jam
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ATANASIU, COSTICĂ, and STEFAN SOROHAN. "Buckling of perforated discs." Journal of Engineering Sciences and Innovation 9, no. 1 (2024): 1–14. https://doi.org/10.56958/jesi.2024.9.1.1.

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The paper presents the results obtained regarding the stability of discs perforated by two, four and 96 circular holes. Circular discs are subjected to two types of loadings: diametrical compression by concentrated forces and radial compression produced by an equivalent uniformly distributed load on the contour of the disks. The influence of the radius of the holes, the distance between the holes and the way of applying the loads, on the value of the critical buckling load is investigated. The results obtained by the finite element method are compared with those obtained in the case of non-per
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ZHONG, HONGJIE, and CUNBIAO LEE. "PATHS OF FREELY FALLING DISKS." Modern Physics Letters B 23, no. 03 (2009): 373–76. http://dx.doi.org/10.1142/s0217984909018436.

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The free falling motion of round thin disks in quiescent water was investigated experimentally. The mean density of the disks were about 1.05 g/cm3, slightly larger than water, and thickness to diameter ratio is 0.1. In this letter, We reported two cases with different mass distributions, in one case the disk's center of mass coincided with the geometry center and in another case it was deviated. Two CCD cameras were used to photograph the falling disk simultaneously, the disk's six degrees of freedom were obtained via a stereoscopic vision method. In the first case fluttering motion was obser
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Johnson, Ted M., Rebecca G. Martin, Stephen Lepp, and Stephen H. Lubow. "The Fraction of Polar-aligned Circumbinary Disks." Astronomical Journal 170, no. 2 (2025): 77. https://doi.org/10.3847/1538-3881/adde5d.

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Abstract Circumbinary gas disks that are misaligned to the binary orbital plane evolve toward either a coplanar or a polar-aligned configuration with respect to the binary host. The preferred alignment depends on the dynamics of the disk: whether it undergoes librating or circulating nodal precession, with librating disks evolving to polar inclinations and circulating disks evolving to coplanar. We quantify the fraction of binary star systems whose disks are expected to have polar orbits f polar, extending previous work to include disks with nonzero mass. Our results suggest that, for low mass
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Hamidov, Namik, Zabit Aslanov, and Gultakin Imanova. "SOME FEATURES OF THE OPERATING CAPACITY OF THE REDUCER." Scientific works/Elmi eserler 2 (April 2, 1996): 109–13. http://dx.doi.org/10.58225/sw.2022.2.109-113.

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Abstract. The main factor affecting the performance of the clutch is the load. The load on the clutch is sign-variable and uneven. It strongly depends on the state of the antenna system (with ice, without ice) as well as on the strength and direction of the wind. During operation, in places of the highest specific pressure, the discs seize and weld, which leads to deep tearing of the metal with the formation of deep grooves, ledges and depressions. When the disks seize, which is very often the case in operating conditions, the clutch works like a single shaft, and when the multi-ton cabin move
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Funes, S.J.,, José G., and Enrico Maria Corsini. "Galaxy Disks and Disk Galaxies1." Publications of the Astronomical Society of the Pacific 112, no. 777 (2000): 1510–11. http://dx.doi.org/10.1086/317703.

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Yakhin, Sergey, Il'fat Aliakberov, and Adel Vakhitov. "SUBSTANTIATION OF PARAMETERS OF A ROTARY IMPLEMENT FOR SURFACE TREATMENT OF SOIL WITH INCLINED HEXAGONAL DISC." Vestnik of Kazan State Agrarian University 17, no. 4 (2023): 106–11. http://dx.doi.org/10.12737/2073-0462-2023-106-111.

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For surface tillage, rotary implements with disk working bodies are widely used. In recent decades, intensive research has been carried out on the development of rotary tools with polygonal disks. They were implemented in practice in the form of hexagonal disks mounted on a shaft at an angle of 90° and performing the usual rotational movement around its axis. Of interest are polygonal discs, which are fixed obliquely on the shaft. The well-known tillage tool with inclined square discs was not implemented in practice, since it turned out to be technologically unstable and did not provide a unif
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Kachan, O. Ya, and S. O. Ulanov. "DETERMINATION OF REGULARITIES OF TREATMENT OF DISKS IN A FLUIDIZED BED OF ABRASIVE." Kosmìčna nauka ì tehnologìâ 29, no. 6 (2023): 62–67. http://dx.doi.org/10.15407/knit2023.06.062.

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n this work, the main regularities of processing disks in a fluidized bed of abrasive are established.The research was carried out on the АПС-600A installation when processing disks in a fluidized bed of abrasive. When processing discs, abrasive grains of groups 24A, 63C, and a mixture of abrasive grains 24A63+24A20 (50 % + 50 %) were used.The grain size of the abrasive grains varied in the range № 20 … № 80.The processed disks were made of such alloys as VT3-1, VT-9, EI698-VD, steel 45 HRC 38...45, and aluminum alloy D1T. The peripheral speed of the parts is Vp = 5...40 m/s. The maximum air c
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Lee, Jung Hoon. "Weak reducing disks and disk surgery." Journal of Knot Theory and Its Ramifications 27, no. 12 (2018): 1850069. http://dx.doi.org/10.1142/s0218216518500694.

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Let [Formula: see text] be an unknot in [Formula: see text]-bridge position in the [Formula: see text]-sphere. We give an example of a pair of weak reducing disks [Formula: see text] and [Formula: see text] for [Formula: see text] such that both disks obtained from [Formula: see text] ([Formula: see text]) by a surgery along any outermost disk in [Formula: see text], cut off by an outermost arc of [Formula: see text] in [Formula: see text], are not weak reducing disks, i.e. the property of weak reducibility of compressing disks is not preserved by a disk surgery.
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Dissertations / Theses on the topic "Disks"

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Grundstrom, Erika Dawn. "Hot Stars with Disks." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/phy_astr_diss/19.

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The evolutionary paths of the massive O and B type stars are often defined by angular momentum transformations that involve circumstellar gas disks. This circumstellar gas is revealed in several kinds of observations, and here I describe a series of investigations of the hydrogen line emission from such disk using detailed studies of five massive binaries and a survey of 128 Be stars. By examining three sets of spectra of the active mass-transfer binary system RY Scuti, I determined masses of 7.1 +/- 1.2 M_sun for the bright supergiant and 30.0 +/- 2.1 M_sun for the massive companion that i
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Muranushi, Takayuki. "Lightning in Protoplanetary Disks." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/180374.

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Cavallius, Maria. "Gas in Debris Disks." Licentiate thesis, Stockholms universitet, Institutionen för astronomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-186017.

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Chiang, Eugene Goldreich Peter Martin. "Circumstellar and circumplanetary disks /." Diss., Pasadena, Calif. : California Institute of Technology, 2000. http://resolver.caltech.edu/CaltechETD:etd-09172008-151500.

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Pohlen, Michael. "The radial structure of galactic stellar disks surface photometric study on disk galaxies /." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=964128535.

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Lobo, Gomes Aiara [Verfasser], and Hubert [Akademischer Betreuer] Klahr. "Planet-disk interactions in non-isothermal disks / Aiara Lobo Gomes ; Betreuer: Hubert Klahr." Heidelberg : Universitätsbibliothek Heidelberg, 2015. http://d-nb.info/1180502523/34.

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Li, Guijun, and 李桂君. "Development of recording technology with FePt recording media and magnetic tunnel junction sensors with conetic alloy." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50899776.

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With highly demanding requirement in current emerging cloud storage and personal computers, hard disk drive recording with high stability and high volume has attached much attention in industry and academy. Recording media and recording head feasible for future high-density recording are both crucial to utilize magnetic recording with 1T bit/in2 recording density. Recoding media with FePt for high density and high stability was investigated in this thesis using FePt polymers with imprinting methods and FePt thin films with ion-beam bombardment technologies. The FePt polymers can be patterned
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Bastos, Martins Ledo Hugo Ricardo. "A census of nuclear stellar disks in early-type galaxies." Thesis, University of Hertfordshire, 2016. http://hdl.handle.net/2299/17184.

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In this thesis we explored the use of nuclear stellar discs as tracers of the merging history of early-type galaxies. These small structures, just a few tens to a few hundreds of parsecs across, are a common but poorly studied feature of early-type galaxies. They are formed during or shortly after merging events due to the infall of gas, which settles in a disc and leads to the formation of new stars. Initial simulations showed that they should not survive a following major merger and could, therefore, be used to trace the epoch when their host galaxies experienced their last major merger even
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Dånmark, Anders. "Volume measurement of wood disks." Thesis, Uppsala universitet, Bildanalys och människa-datorinteraktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-212199.

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At the Department of Forest Products at Swedish University of Agricultural Sciences different metrics for wood are used. The volume of wood disks' is measured using archimedes principle.There are concerns of how accurate this measurement is and a different measuringsystem is wanted. This thesis has investigated the possibility of measuring the disks' volumes with imageanalysis. The recovery error should be less than 1% of the actual volume. In general, there are two methods for recovering an object using imageanalysis, active and passive methods. Compairing active and passive methods, active m
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Yoachim, Peter. "Thick disks in external galaxies /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/5444.

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Books on the topic "Disks"

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Fridman, Alexei M., Mikhail Ya. Marov, and Ilya G. Kovalenko, eds. Astrophysical disks. Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4348-1.

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Sinclair, Ian Robertson. Hard disks. Newtech, 1992.

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F, Dermott S., Hunter J. H, and Wilson R. E. 1937-, eds. Astrophysical disks. New York Academy of Sciences, 1992.

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Taylor, Allen G. Using hard disks with PCs. Prentice-Hall, 1987.

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Kato, Shoji. Oscillations of Disks. Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56208-5.

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Barden, R. A. Using floppy disks. National Computing Centre, 1987.

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Zhang, Qirong, Jianlong Song, and Feng Rui. Ying die mi ji shou ce: Ying die an zhuang, fen ge, bei fen, xiu fu, ge shi hua, you hua, wei xiu ji bao yang. Zhi nan zhen ji tuan, 2002.

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Iraci, J. Remedies for deteriorated or damaged modern information carriers. Canadian Conservation Institute, Dept. of Canadian Heritage, 2005.

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Blanc, Michel, Gregory J. Herczeg, Veerle Sterken, et al., eds. From Disks to Planets. Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-94-024-1518-6.

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Meyer, Friedrich, Wolfgang J. Duschl, Juhan Frank, and Emmi Meyer-Hofmeister, eds. Theory of Accretion Disks. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1037-9.

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Book chapters on the topic "Disks"

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Kundt, Wolfgang. "Disks." In Astronomy and Astrophysics Library. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04347-9_6.

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Eschenauer, H., N. Olhoff, and W. Schnell. "Disks." In Applied Structural Mechanics. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-59205-8_8.

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Fridman, Alexei M., E. V. Polyachenko, Yu M. Torgashin, S. G. Yanchenko, and E. N. Snezhkin. "The Over-Reflection Instability: Myth or Reality?" In Astrophysical disks. Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4348-1_1.

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Barkov, Maxim V., and Gennady S. Bisnovatyi-Kogan. "Gamma-Ray Burst Interaction with Dense Interstellar Medium." In Astrophysical disks. Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4348-1_10.

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Kaigorodov, P. V., D. V. Bisikalo, A. A. Boyarchuk, and O. A. Kuznetsov. "Morphology of the Interaction between the Stream and Cool Accretion Disc in Semidetached Binaries." In Astrophysical disks. Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4348-1_11.

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Khoperskov, Alexander V., and Sergej S. Khrapov. "Computer Modeling of Non-Stationary Gas Quasi-Keplerian Disk." In Astrophysical disks. Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4348-1_12.

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Kovalenko, I. G., M. A. Eremin, and V. V. Korolev. "3D Structure of Gaseous Disks in Spiral Galaxies." In Astrophysical disks. Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4348-1_13.

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Kuznetsov, O. A. "Hydrodynamical Turbulence in Accretion Discs." In Astrophysical disks. Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4348-1_14.

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Okuda, Toru. "2D-Simulations of Subcritical and Supercritical Accretion Disks Around Black Holes." In Astrophysical disks. Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4348-1_15.

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Sil'chenko, O. K. "Separate Circumnuclear Stellar and Gaseous Disks in Disk Galaxies." In Astrophysical disks. Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4348-1_16.

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Conference papers on the topic "Disks"

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Giovanetti, Eli, and Kenneth Hall. "Axisymmetric Potential Flow Model of Single or Coaxial Actuator Disks." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11392.

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This paper presents a computationally efficient method for computing the axisymmetric three-dimensional flow field induced by the trailing vortex system of either a single actuator disk or a pair of closely spaced coaxial actuator disks. A rotor in axial flight or hover (or a pair of coaxial rotors) is modeled as an actuator disk (or disks); the associated wake is modeled using contracting cylindrical sheets of vorticity approximated by discrete vortex rings. The resulting system of vortex sheets is axisymmetric and aligned with flow streamlines. The location of the sheets of vorticity is foun
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Komma, Yoshiaki, Shin-ichi Kuwamoto, Hideki Aikou, Kenichiro Urairi, Michihiro Yamagata, and Yasuhiro Tanaka. "Holographic Optical Element For A Dual Focus Optical Head." In Diffractive Optics and Micro-Optics. Optica Publishing Group, 1998. http://dx.doi.org/10.1364/domo.1998.dwb.1.

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A high density optical disk format named DVD adopts a 0.6 mm disk to simultaneously use a high numerical aperture (NA) lens and gain tolerance of disk tilt.1 Because of the immense popularity of the CD format, it is important to playback the current widely used Compact Discs (CDs) on DVD format players. This requires an optical head that can read both conventional 1.2 mm disks and the new 0.6 mm disk. To read both disks with the same optical head, it is necessary to overcome spherical aberration caused by the difference in disk thickness.
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Komina, Yoshiaki, Yasuhiro Tanaka, Kenichiro Urairi, Seiji Nishino, and Sadao Mizuno. "Dual Focus Optical Head with A Hologram-Integrated Lens." In Symposium on Optical Memory. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/isom.1996.othc.1.

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Development of a high density optical disk format named DVD was agreed upon last year (1995). The format adopts a 0.6 mm disk to simultaneously use a high numerical aperture (NA) lens and gain tolerance of disk tilt.1 Because of a Immense popularity of the CD format, it is important to playback the current, widely used Compact Discs (CDs) on the DVD format player. This requires an optical head that can read both conventional 1.2 mm disks and the new 0.6 mm disk. To read both disks with the same optical head, it is necessary to correct spherical aberration, which is caused by the difference in
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Marschall, Raphael, and Alessandro Morbidelli. "An inflationary disk phase of protoplanetary disks." In Goldschmidt2023. European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.17345.

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Tian, Shuqing, and Yatao Zhu. "Disk Heat Transfer Analysis in a Heated Rotating Cavity With an Axial Throughflow." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69185.

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In the rotating disk cavities of aero-engine compressors, buoyancy-induced flow and heat transfer can occur due to thermal gradients between cooling air and hot surfaces. The simplified rotating cavity with two plane discs, a shaft and a cylindrical rim has been investigated numerically and compared with the available measurements. Two models have been solved using a commercial CFD code, Fluent, with the RNG k-ε turbulence model. The first one is the conventional model with only fluid region solved, a temperature profile with the linear radial gradient imposed at the disk walls, and an isother
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Daniels, W. A., B. V. Johnson, and D. J. Graber. "Aerodynamic and Torque Characteristics of Enclosed Co/Counter Rotating Disks." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-177.

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Experiments were conducted to determine the aerodynamic and torque characteristics of adjacent rotating disks enclosed in a shroud. These experiments were performed to obtain an extended data base for advanced turbine designs such as the counter-rotating turbine. Torque measurements were obtained on both disks in the rotating frame of reference for co-rotating, counter-rotating and one-rotating/one-static disk conditions. The disk models used in the experiments included disks with typical smooth turbine geometry, disks with bolts, disks with bolts and partial bolt covers and flat disks. A wind
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Khaibrakhmanov, S., and A. Dudorov. "Dynamics of magnetic flux tubes in accretion disks of Herbig Ae/Be stars." In ASTRONOMY AT THE EPOCH OF MULTIMESSENGER STUDIES. Proceedings of the VAK-2021 conference, Aug 23–28, 2021. Crossref, 2022. http://dx.doi.org/10.51194/vak2021.2022.1.1.048.

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The dynamics of magnetic flux tubes (MFTs) in accretion disks of Herbig Ae/Be stars with fossil large-scale magnetic fieldis modeled. The model takes into account the buoyant force, turbulent and aerodynamic drag, radiative heat exchange withthe surrounding gas, and the magnetic field of the disk. The structure of the disk is calculated using our MHD model,taking into account the heating of the surface layers of the disk with the intense stellar radiation. The simulations showthat MFTs periodically rise from the disk with speeds of 10 − 12 km s −1 and form an outflowing magnetized corona of thedis
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Kawakubo, Youichi, Takahiro Hayakawa, Yusuke Sugawara, Koji Ikeda, and Osamu Kitamura. "Tribological Characteristics of Thin-Film Disks With and Without Mobile Lubricant." In ASME/STLE 2009 International Joint Tribology Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/ijtc2009-15034.

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Lubricant on thin-film magnetic disks is divided into two parts. One is bonded lubricant that is fixed on disk surface and remains on disk surface after solvent rinsing. The other is mobile lubricant that can move on disk surface and is removed by solvent rinsing. It has been believed that mobile lubricant is imperative to design reliable hard disk drives. However, mobile lubricant would also be a cause of high friction between heads and disks. We started our studies on disks without mobile lubricant to find the possibility of disks with only bonded lubricant. In this paper, tribological chara
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Tsunoda, Yoshito, and Masahiro Ojima. "Advanced Technologies for the Next Generation Optical Disks." In Optical Data Storage. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/ods.1987.wd1.

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Application areas of optical disk systems have been expanding slowly but stably into the market during these few years. So far optical disks systems are widely used for image and document data storage. This application area is thought to be the most appropriate for the present performances and the functions of optical disks. One of the biggest limiting factor of the present optical disks for applying to directly competitive market with the conventional magnetic disk storage systems is their slow data processing time including data transfer rate, accessing time, and disk rotaion time. These pro
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Tong, Jing, Chaoping Zang, and E. P. Petrov. "Accurate Interpolation of the Dependency of Modal Properties on the Rotation Speed for the Transient Response Analysis of Bladed Disks." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-58982.

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Abstract During fast gas-turbine engine acceleration and deceleration the transient vibration effects in bladed disk vibration become significant and the transient response has to be calculated. In this paper an effective method is developed for efficient calculations of the transient vibration response for mistuned bladed disks under varying rotation speeds. The method uses the large-scale finite element modelling of the bladed disks allowing the accurate description of the dynamic properties of the mistuned bladed disks. The effects of the varying rotation speed on the natural frequencies an
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Reports on the topic "Disks"

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Psaltis. Holographic 3D Disks. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada377847.

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Tkac, P., G. F. Vandegrift, and J. Harvey. Dissolution of Sintered Mo Disks. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1132238.

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Amin, Mustafa A., and Andrei V. Frolov. Persistent Patterns in Accretion Disks. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/878720.

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Psaltis, Demetri. Parallel Readout of Optical Disks. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada256625.

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Tkac, Peter, and George Vandegrift. Dissolution of Sintered Mo Disks. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1159189.

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Fusco, A. M. Development report for dual-burst disks. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/399720.

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Bahder, Thomas B. Stress in Rotating Disks and Cylinders. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada407981.

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Fowley, M., and D. Herman. BACKPRESSURE TESTING OF ROTARY MICROFILTER DISKS. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1018680.

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Li, Yaping. IC project: Exploring Planet-disk Interaction in Dusty Protoplanetary Disks and Their Observational Implications. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1756776.

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Singh, Bhavini, Taylor Roybal, Nadezda Draganic, Carlos Miera, and Keith Woloshun. Window Cooling Studies and Disk Vibration Testing on a Subset of Mo-100 Disks. Office of Scientific and Technical Information (OSTI), 2025. https://doi.org/10.2172/2568538.

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