Relevant bibliographies by topics / Mass Accretion Rate

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Mass Accretion Rate'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Mass Accretion Rate"

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Fiorellino, E., S. Park, Á. Kóspál, and P. Ábrahám. "The Accretion Process in the DQ Tau Binary System." Astrophysical Journal 928, no. 1 (2022): 81. http://dx.doi.org/10.3847/1538-4357/ac4790.

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Abstract Mass accretion from the circumstellar disk onto the protostar is a fundamental process during star formation. Measuring the mass accretion rate is particularly challenging for stars belonging to binary systems, because it is often difficult to discriminate which component is accreting. DQ Tau is an almost equal-mass spectroscopic binary system where the components orbit each other every 15.8 days. The system is known to display pulsed accretion, i.e., the periodic modulation of the accretion by the components on eccentric orbit. We present multi-epoch ESO/Very Large Telescope X-Shoote
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Kazanas, Demosthenes. "MHD Accretion Disk Winds: The Key to AGN Phenomenology?" Galaxies 7, no. 1 (2019): 13. http://dx.doi.org/10.3390/galaxies7010013.

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Accretion disks are the structures which mediate the conversion of the kinetic energy of plasma accreting onto a compact object (assumed here to be a black hole) into the observed radiation, in the process of removing the plasma’s angular momentum so that it can accrete onto the black hole. There has been mounting evidence that these structures are accompanied by winds whose extent spans a large number of decades in radius. Most importantly, it was found that in order to satisfy the winds’ observational constraints, their mass flux must increase with the distance from the accreting object; the
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Haemmerlé, L., R. S. Klessen, L. Mayer, and L. Zwick. "Maximum accretion rate of supermassive stars." Astronomy & Astrophysics 652 (August 2021): L7. http://dx.doi.org/10.1051/0004-6361/202141376.

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Context. The formation of the most massive quasars observed at high redshifts requires extreme inflows of gas down to the length scales of the central compact object. Aims. Here we estimate the maximum inflow rate allowed by gravity down to the surface of supermassive stars, the possible progenitors of these supermassive black holes. Methods. We use the continuity equation and the assumption of spherical symmetry and free fall to derive the maximum allowed inflow rates for various density profiles. We apply our approach to the mass–radius relation of rapidly accreting supermassive stars to est
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Park, Myeong-Gu. "MASS ACCRETION RATE OF ROTATING VISCOUS ACCRETION FLOW." Astrophysical Journal 706, no. 1 (2009): 637–43. http://dx.doi.org/10.1088/0004-637x/706/1/637.

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Bergez-Casalou, C., B. Bitsch, A. Pierens, A. Crida, and S. N. Raymond. "Influence of planetary gas accretion on the shape and depth of gaps in protoplanetary discs." Astronomy & Astrophysics 643 (November 2020): A133. http://dx.doi.org/10.1051/0004-6361/202038304.

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It is widely known that giant planets have the capacity to open deep gaps in their natal gaseous protoplanetary discs. It is unclear, however, how gas accretion onto growing planets influences the shape and depth of their growing gaps. We performed isothermal hydrodynamical simulations with the Fargo-2D1D code, which assumes planets accreting gas within full discs that range from 0.1 to 260 AU. The gas accretion routine uses a sink cell approach, in which different accretion rates are used to cope with the broad range of gas accretion rates cited in the literature. We find that the planetary g
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Hashimoto, Jun, and Yuhiko Aoyama. "Analyses of Multiple Balmer Emission Lines from Accreting Brown Dwarfs and Very Low Mass Stars." Astronomical Journal 169, no. 2 (2025): 93. https://doi.org/10.3847/1538-3881/ad957e.

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Abstract A planetary growth rate, i.e., the mass accretion rate, is a fundamental parameter in planet formation, as it determines a planet's final mass. Planetary mass accretion rates have been estimated using hydrogen lines, based on the models originally developed for accreting stars, known as the accretion flow model. Recently, Aoyama et al. introduced the accretion shock model as an alternative mechanism for hydrogen line emission. However, it remains unclear which model is more appropriate for accreting planets and substellar objects. To address this, we applied both models to archival da
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Herczeg 沈, Gregory J. 雷歌, Yuguang 昱光 Chen 陈, Jean-Francois Donati, et al. "Twenty-five Years of Accretion onto the Classical T Tauri Star TW Hya." Astrophysical Journal 956, no. 2 (2023): 102. http://dx.doi.org/10.3847/1538-4357/acf468.

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Abstract Accretion plays a central role in the physics that governs the evolution and dispersal of protoplanetary disks. The primary goal of this paper is to analyze the stability over time of the mass accretion rate onto TW Hya, the nearest accreting solar-mass young star. We measure veiling across the optical spectrum in 1169 archival high-resolution spectra of TW Hya, obtained from 1998–2022. The veiling is then converted to accretion rate using 26 flux-calibrated spectra that cover the Balmer jump. The accretion rate measured from the excess continuum has an average of 2.51 × 10−9 M ⊙ yr−1
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Maeda, Natsuho, Keiji Ohtsuki, Takayuki Tanigawa, Masahiro N. Machida, and Ryo Suetsugu. "Delivery of Gas onto the Circumplanetary Disk of Giant Planets: Planetary-mass Dependence of the Source Region of Accreting Gas and Mass Accretion Rate." Astrophysical Journal 935, no. 1 (2022): 56. http://dx.doi.org/10.3847/1538-4357/ac7ddf.

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Abstract Gas accretion onto the circumplanetary disks and the source region of accreting gas are important to reveal dust accretion that leads to satellite formation around giant planets. We performed local three-dimensional high-resolution hydrodynamic simulations of an isothermal and inviscid gas flow around a planet to investigate the planetary-mass dependence of the gas accretion bandwidth and gas accretion rate onto circumplanetary disks. We examined cases with various planetary masses corresponding to M p = 0.05–1M Jup at 5.2 au, where M Jup is the current Jovian mass. We found that the
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Bosch-Ramon, V. "3D hydrodynamical simulations of the impact of mechanical feedback on accretion in supersonic stellar-mass black holes." Astronomy & Astrophysics 660 (March 30, 2022): A5. http://dx.doi.org/10.1051/0004-6361/202142821.

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Context. Isolated stellar-mass black holes accrete gas from their surroundings, often at supersonic speeds, and can form outflows that may influence the accreted gas. The latter process, known as mechanical feedback, can significantly affect the accretion rate. Aims. We use hydrodynamical simulations to assess the impact of mechanical feedback on the accretion rate when the black hole moves supersonically through a uniform medium. Methods. We carried out three-dimensional (3D) hydrodynamical simulations of outflows fueled by accretion that interact with a uniform medium, probing scales equival
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Naddaf, Mohammad-Hassan, Bożena Czerny, and Michal Zajaček. "The Wind Dynamics of Super-Eddington Sources in FRADO." Dynamics 2, no. 3 (2022): 295–305. http://dx.doi.org/10.3390/dynamics2030015.

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We perform non-hydrodynamical 2.5D simulations to study the dynamics of material above accretion disk based on the disk radiation pressure acting on dust. We assume a super-accreting underlying disk with the accretion rate of 10 times the Eddington rate with central black hole mass ranging from 107 up to 109M⊙. Such high accretion rates are characteristic for extreme sources. We show that for high accretors the radiatively dust-driving mechanism based on the FRADO model always leads to a massive outflow from the disk surface, and the failed wind develops only at larger radii. The outflow rate
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Dissertations / Theses on the topic "Mass Accretion Rate"

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Mulders, Gijs D., Ilaria Pascucci, Carlo F. Manara, et al. "Constraints from Dust Mass and Mass Accretion Rate Measurements on Angular Momentum Transport in Protoplanetary Disks." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/626047.

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In this paper, we investigate the relation between disk mass and mass accretion rate to constrain the mechanism of angular momentum transport in protoplanetary disks. We find a correlation between dust disk mass and mass accretion rate in Chamaeleon I with a slope that is close to linear, similar to the one recently identified in Lupus. We investigate the effect of stellar mass and find that the intrinsic scatter around the best-fit M-dust-M star and M-acc-M star relations is uncorrelated. We simulate synthetic observations of an ensemble of evolving disks using a Monte Carlo approach and find
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Pintore, Fabio. "X-ray spectral states and metallicity of Ultra Luminous X-ray sources: a deeper insight into their spectral properties." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423019.

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Ultraluminous X-ray sources (ULXs) are a class of extragalactic, off nuclear and point-like sources with isotropic X-ray luminosities higher than 1e39 erg/s. They are supposed to be accreting Black Hole binaries systems but the accretion mechanisms at the basis of their extremely high X-ray luminosity are still matter of debate. We carried out a detailed spectral analysis of all the available XMM-Newton observations of two ULXs in NGC 1313, adopting a common model based on a multicolor disc plus a comptonizing component. We were able to describe the spectral evolution of the two sources withi
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Cabrit, Sylvie. "Ejection de matiere dans les objets protostellaires et les etoiles jeunes de faible masse." Paris 6, 1989. http://www.theses.fr/1989PA066082.

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Une etude de 2 diagnostics de perte de masse dans les objets stellaires et on developpe un programme qui calcule la formation des raies rotationnelles de co en geometrie axiale. Les contraintes posees par les resultats sur la structure a grande echelle des jets sont discutees. Les raies interdites dans les etoiles jeunes de faible masse sont ensuite etudiees. Plusieurs modeles capables d'expliquer les profils observes sont discutes
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Franco, Lucia Mu~noz. "The effect of mass accretion rate on the burst oscillations in 4U 1728-34 /." 2000. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:9990515.

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Ross, A. W., L. Russell, Gisela Helfer, L. M. Thomson, M. J. Dalby, and P. J. Morgan. "Photoperiod Regulates Lean Mass Accretion, but Not Adiposity, in Growing F344 Rats Fed a High Fat Diet." 2015. http://hdl.handle.net/10454/10840.

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yes<br>In this study the effects of photoperiod and diet, and their interaction, were examined for their effects on growth and body composition in juvenile F344 rats over a 4-week period. On long (16L:8D), relative to short (8L:16D), photoperiod food intake and growth rate were increased, but percentage adiposity remained constant (ca 3-4%). On a high fat diet (HFD), containing 22.8% fat (45% energy as fat), food intake was reduced, but energy intake increased on both photoperiods. This led to a small increase in adiposity (up to 10%) without overt change in body weight. These changes were als
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Book chapters on the topic "Mass Accretion Rate"

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Ichikawa, S., and Y. Osaki. "Recurrence Time for Dwarf Nova Outbursts: Dependence on Mass Transfer Rate." In Theory of Accretion Disks — 2. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0858-4_14.

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Gloerfeld, Mark, Markus Schremb, Antonio Criscione, Suad Jakirlic, and Cameron Tropea. "Impact of Supercooled Drops onto Cold Surfaces." In Fluid Mechanics and Its Applications. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-09008-0_16.

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AbstractIce accretion resulting from the impact of supercooled water drops is a hazard for structures exposed to low temperatures, for instance aircraft wings and wind turbine blades. Despite a multitude of studies devoted to the involved phenomena, the underlying physical processes are not yet entirely understood. Hence, modelling of the conditions for ice accretion and prediction of the ice accretion rate are presently not reliable. The research conducted in this study addresses these deficiencies in order to lend insight into the physical processes involved. While presenting an overview of
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Klapp, Jaime, Leonardo Di G. Sigalotti, and Miguel Zavala. "Stellar Mass Accretion Rates from Fragmentation of a Rotating Core." In Computational and Experimental Fluid Mechanics with Applications to Physics, Engineering and the Environment. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-00191-3_14.

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Bland, Philip A. "Quantification of Meteorite Infall Rates from Accumulations in Deserts, and Meteorite Accumulations on Mars." In Accretion of Extraterrestrial Matter Throughout Earth’s History. Springer US, 2001. http://dx.doi.org/10.1007/978-1-4419-8694-8_15.

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Das, Tapas K. "Computation of Mass-Outflow Rates from Advective Accretion Disks around Black Holes." In Observational Evidence for Black Holes in the Universe. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4750-7_8.

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Patterson, Joseph. "Distances, Accretion Rates, and Space Densities of Cataclysmic Variables: Piece O’ Cake, and Other Heresies." In Cataclysmic Variables and Low-Mass X-Ray Binaries. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-009-5319-2_51.

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Bailyn, Charles D. "Accretion onto a Black Hole." In What Does a Black Hole Look Like? Princeton University Press, 2014. http://dx.doi.org/10.23943/princeton/9780691148823.003.0002.

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This chapter explores the ways that accretion onto a black hole produces energy and radiation. As material falls into a gravitational potential well, energy is transformed from gravitational potential energy into other forms of energy, so that total energy is conserved. Observing such accretion energy is one of the primary ways that astrophysicists pinpoint the locations of potential black holes. The spectrum and intensity of this radiation is governed by the geometry of the gas flow, the mass infall rate, and the mass of the accretor. The simplest flow geometry is that of a stationary object
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Yang, Xiaolong. "The Unified Models for Black Hole Accretions." In Astronomy and Planetary Science - From Cryovolcanism to Black Holes and Galactic Evolution. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.105416.

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Decades of observations and theoretical studies present intriguing results about black hole accretions: supermassive black holes (SMBHs), located in the centers of galaxies, are accreting similar to Galactic stellar-mass black hole systems (GBHs). This is the unified model of black hole accretion, which indicates active galactic nuclei (AGNs, the accreting SMBHs) are only the scaled-up version of galactic X-ray binaries (XRBs, the accreting GBHs). The analogy between AGNs and XRBs ensures us to determine AGN evolutions on cosmological timescales by simply studying the quick-playing Galactic sy
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Ahrens, T. J. "Earth Accretion." In Origin of the Earth. Oxford University PressNew York, NY, 1990. http://dx.doi.org/10.1093/oso/9780195066197.003.0013.

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Abstract Accretion of the Earth is described in terms of the infall of volatile-, silicate-, sulfide-, and iron-bearing planetesimals. The shock pressures induced in the constituents of the planetesimals upon impact with the Earth detennine their fate and the oxidation state associated with reaction of the coaccreting protoatmosphere. For planetesimal infall velocities of &amp;lt;0.9 km/sec, the accreting Earth has a radius of :S1400km, and the impacting planetesimals retain their full complement of volatiles, e.g., H20, CO2, S02, NH3, CH., and noble gases. This portion of the initially accret
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Davies, G. F. "Heat And Mass Transport In The Early Earth." In Origin of the Earth. Oxford University PressNew York, NY, 1990. http://dx.doi.org/10.1093/oso/9780195066197.003.0011.

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Abstract Mass transport was responsible for establishing the main stratification of the Earth ( core, mantle, and crust) and also was the dominant means of heat transport through most of the Earth’s history. During early accretion, impacts supplied the heat input and also enhanced heat loss by stirring the near-surface. Initial core segregation probably began catastrophically when the Earth was about half of its present radius and homogenized the temperature near the melting temperature of the C. Thereafter, core segregation would have been rate-limited by accretion. Subsequent thermal evoluti
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Conference papers on the topic "Mass Accretion Rate"

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Persi, Paolo, and Mauricio Tapia. "H2 shocks and mass accretion rate in high mass young stellar objects (HMYSOs)." In Accretion Processes in Cosmic Sources. Sissa Medialab, 2018. http://dx.doi.org/10.22323/1.288.0014.

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Beskrovnaya, N., and N. Ikhsanov. "The radius of magnetosphere and the equilibrium radius are not the same!" In Modern astronomy: from the Early Universe to exoplanets and black holes. Special Astrophysical Observatory of the Russian Academy of Sciences, 2024. https://doi.org/10.26119/vak2024.007.

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The process of accretion onto a neutron star with strong magnetic field is discussed. The equilibrium radius, which is defined by equating the pressure of the accreting material with the magnetic pressure due to the dipole magnetic field of the neutron star, is estimated for the cases of a spherical accretion flow and a Keplerian accretion disk. It is emphasized that the magnetospheric radius of an accreting star is defined by equating the mass accretion rate observed in the system with the rate of plasma diffusion into the magnetic field of the neutron star at the magnetospheric boundary. Fol
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Widianingrum, Nuriawati, and Atsnaita Yasrina. "Formulating the equation of relativistic mass accretion rate for extreme Kerr black holes with accretion disk on the equatorial plane." In CONFERENCE ON THEORETICAL PHYSICS AND NONLINEAR PHENOMENA (CTPNP) 2019: Excursion from Vacuum to Condensed Matter. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0008332.

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Petrecca, V., I. E. Papadakis, M. Paolillo, D. De Cicco, and F. E. Bauer. "ENSEMBLE POWER SPECTRAL DENSITY OF QUASARS IN UV/OPTICAL BANDS." In VI Conference on Active Galactic Nuclei and ravitational Lensing. Astronomical Observatory Belgrade, Volgina 7, 11060 Belgrade 38, Serbia, 2024. http://dx.doi.org/10.69646/aob24013.

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Variability of AGN has proven to be a powerful tool to constrain the properties of the accretion process onto supermassive black holes and their surroundings. Correlations between UV/optical variability and physical properties have been long studied with a plethora of different approaches and time-domain surveys, although the detailed interplay between different emitting regions is not yet clear. Upcoming surveys such as the Legacy Survey of Space and Time (LSST) will revolutionize time domain astronomy by increasing both the size of the sample and the temporal baseline. I present a completely
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Babina, E. V., S. A. Artemenko, K. N. Grankin, and P. P. Petrov. "Dynamics of wind as indicator of magnetic activity of T Tauri star RY Tau." 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/vak2021.2022.1.1.037.

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We present the results of spectral and photometric monitoring of the classical Tauri star RY Tau, which has been carriedout since 2013. It is shown that the relative roles of accretion and wind varied smoothly over eight years, indicating a changeeither in the global magnetic field of the star or in the mass accretion rate. We suppose it may be a tool to reveal a possiblecycle of magnetic activity at the early stages of stellar evolution.
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Taghavi, Ray R., and Wonjin Jin. "Effects of Ice Formation on the Flowfield of an Aircraft Engine Inlet." In ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/fedsm2008-55283.

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The effects of typical rime and glaze ice on the performance of the M2129 S-duct inlet are computationally investigated using the steady-state RANS solution. The glaze ice accretion produces a substantial degradation of the inlet performance due to its obstructive shape to the in-flow, while the effect of the rime ice is not significant. Compared to the clean inlet, the secondary flow region at the engine face of the duct inlet is increased by 600 percent for the glaze iced inlet. Total pressure recoveries at the engine face for the rime and glaze ice case are 98.8 and 95.8 percent, respective
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Bora, Venkateshwar Reddy, Mariachiara Gallia, Inken Knop, and Alberto Guardone. "Investigation of the Influence of Aero-Thermal Non-equilibrium Conditions of an SLD Cloud on Airfoil Icing." In International Conference on Icing of Aircraft, Engines, and Structures. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1406.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;This study examines the impact of slip in aero-thermal conditions of supercooled large droplets (SLD) produced in an Icing Wind Tunnel (IWT) on the ice accretion characteristics. The study identifies potential biases in the SLD model development based on IWT data and numerical predictions that assume the SLD to be in aerothermal equilibrium with the IWT airflow. To obtain realistic temperature and velocity data for each droplet size class in the test section of the Braunschweig Icing Wind Tunnel (BIWT), a Lagrangian drop
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Zhang, Yue, Karthik Narayanasamy, Wolfgang Sandel, Shezad Nilamdeen, and Isik Ozcer. "A Three-Layer Model for Ice Crystal Icing in Aircraft Engines." In International Conference on Icing of Aircraft, Engines, and Structures. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1481.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;This paper presents the current state of a three-layer surface icing model for ice crystal icing risk assessment in aircraft engines, being developed jointly by Ansys and Honeywell to account for possible heat transfer from inside an engine into the flow path where ice accretion occurs. The bottom layer of the proposed model represents a thin metal sheet as a substrate surface to conductively transfer heat from an engine-internal reservoir to the ice layer. The middle layer is accretion ice with a porous structure able t
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Broeren, Andy, Sam Lee, and Jen-Ching Tsao. "Additional Large-Drop Ice Accretion Test Results for a Large Scale Swept Wing Section from January 2022." In International Conference on Icing of Aircraft, Engines, and Structures. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1382.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;In-flight icing is an important consideration that affects aircraft design, performance, certification and safety. Newer regulations combined with increasing demand to reduce fuel burn, emissions and noise are driving a need for improvements in icing simulation capability. To that end, this paper presents the results of additional ice accretion testing conducted in the NASA Icing Research Tunnel in January 2022 with a large swept wing section typical of a modern commercial transport. The model was based upon a section of
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Dehghani-Sanij, Alireza, Yuri S. Muzychka, and Greg F. Naterer. "Predicted Ice Accretion on Horizontal Surfaces of Marine Vessels and Offshore Structures in Arctic Regions." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54054.

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Sea spray icing is one of the most significant problems for the operation of marine vessels and offshore structures in Arctic regions. This phenomenon affects the stability of marine vessels and offshore structures, and also the safety of human activities onboard. In this paper, a new predictive icing model for large horizontal surfaces of a marine vessel is developed. To obtain the total flux of sea spray during the icing process, both wind spray and wave spray are considered. By applying heat, mass and salt concentration balances, the freezing fraction, temperature distribution, ice layer an
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