Relevant bibliographies by topics / Simulations HPC de plasma turbulent

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Academic literature on the topic 'Simulations HPC de plasma turbulent'

Author: Grafiati
Published: 8 June 2024
Last updated: 31 July 2025

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Journal articles on the topic "Simulations HPC de plasma turbulent"

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Bouzat, Nicolas, Camilla Bressan, Virginie Grandgirard, Guillaume Latu, and Michel Mehrenberger. "Targeting Realistic Geometry in Tokamak Code Gysela." ESAIM: Proceedings and Surveys 63 (2018): 179–207. http://dx.doi.org/10.1051/proc/201863179.

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In magnetically confined plasmas used in Tokamak, turbulence is respon-sible for specific transport that limits the performance of this kind of reactors. Gyroki-netic simulations are able to capture ion and electron turbulence that give rise to heat losses, but require also state-of-the-art HPC techniques to handle computation costs. Such simulations are a major tool to establish good operating regime in Tokamak such as ITER, which is currently being built. Some of the key issues to address more re- alistic gyrokinetic simulations are: efficient and robust numerical schemes, accurate geometric
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Veltri, P., G. Nigro, F. Malara, V. Carbone, and A. Mangeney. "Intermittency in MHD turbulence and coronal nanoflares modelling." Nonlinear Processes in Geophysics 12, no. 2 (2005): 245–55. http://dx.doi.org/10.5194/npg-12-245-2005.

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Abstract. High resolution numerical simulations, solar wind data analysis, and measurements at the edges of laboratory plasma devices have allowed for a huge progress in our understanding of MHD turbulence. The high resolution of solar wind measurements has allowed to characterize the intermittency observed at small scales. We are now able to set up a consistent and convincing view of the main properties of MHD turbulence, which in turn constitutes an extremely efficient tool in understanding the behaviour of turbulent plasmas, like those in solar corona, where in situ observations are not ava
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Cranmer, Steven R., and Momchil E. Molnar. "Magnetohydrodynamic Mode Conversion in the Solar Corona: Insights from Fresnel-like Models of Waves at Sharp Interfaces." Astrophysical Journal 955, no. 1 (2023): 68. http://dx.doi.org/10.3847/1538-4357/acee6c.

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Abstract The solar atmosphere is known to contain many different types of wave-like oscillation. Waves and other fluctuations (e.g., turbulent eddies) are believed to be responsible for at least some of the energy transport and dissipation that heats the corona and accelerates the solar wind. Thus, it is important to understand the behavior of magnetohydrodynamic (MHD) waves as they propagate and evolve in different regions of the Sun’s atmosphere. In this paper, we investigate how MHD waves can affect the overall plasma state when they reflect and refract at sharp, planar interfaces in densit
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Sharma, A. Y., M. D. J. Cole, T. Görler, et al. "Global gyrokinetic study of shaping effects on electromagnetic modes at NSTX aspect ratio with ad hoc parallel magnetic perturbation effects." Physics of Plasmas 29, no. 11 (2022): 112503. http://dx.doi.org/10.1063/5.0106925.

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Plasma shaping may have a stronger effect on global turbulence in tight-aspect-ratio tokamaks than in conventional-aspect-ratio tokamaks due to the higher toroidicity and more acute poloidal asymmetry in the magnetic field. In addition, previous local gyrokinetic studies have shown that it is necessary to include parallel magnetic field perturbations in order to accurately compute growth rates of electromagnetic modes in tight-aspect-ratio tokamaks. In this work, the effects of elongation and triangularity on global, ion-scale, linear electromagnetic modes are studied at National Spherical Tor
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Baudoin, Camille, Patrick Tamain, Hugo Bufferand, et al. "Turbulent heat transport in TOKAM3X edge plasma simulations." Contributions to Plasma Physics 58, no. 6-8 (2018): 484–89. http://dx.doi.org/10.1002/ctpp.201700168.

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Mininni, Pablo. "Harnessing HPC to Understand Turbulence: Capturing the Fine-grain Structure of Geophysical Flows." Resúmenes de Mecánica Computacional 1, no. 2 (2024): 25. https://doi.org/10.70567/rmc.v1i2.144.

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In the realm of atmospheric dynamics, the emergence of large-scale structures from small-scale turbulent convective motions stands as one of the most striking phenomena in nature. This process, which impacts climate modeling, small-scale collisions of particles and droplets in clouds, and has implications for industrial flows, is difficult to capture in traditional turbulence models. This presentation will delve into insights from single- and multi-phase numerical simulations of unprecedented sizes, resolving atmospheric flows with spatial resolutions down to 30 meters. Turbulence in these sim
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Nunami, M., S. Toda, M. Nakata, and H. Sugama. "Improved prediction scheme for ion heat turbulent transport." Physics of Plasmas 29, no. 10 (2022): 102505. http://dx.doi.org/10.1063/5.0103447.

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A novel scheme to predict the turbulent transport of ion heat of magnetic confined plasmas is developed by combining mathematical optimization techniques employed in data analysis approaches and first-principle gyrokinetic simulations. Gyrokinetic simulation, as a first-principle approach, is a reliable way to predict turbulent transport. However, in terms of the flux-matching [Candy et al., Phys. Plasmas 16, 060704 (2009)], quantitative transport estimates by gyrokinetic simulations incur extremely heavy computational costs. In order to reduce the costs of quantitative transport prediction ba
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Gleize, Vincent, Michel Costes, and Ivan Mary. "Numerical simulation of NACA4412 airfoil in pre-stall conditions." International Journal of Numerical Methods for Heat & Fluid Flow 32, no. 4 (2021): 1375–97. http://dx.doi.org/10.1108/hff-07-2021-0514.

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Purpose The purpose of this paper is to study turbulent flow separation at the airfoil trailing edge. This work aims to improve the knowledge of stall phenomenon by creating a QDNS database for the NACA412 airfoil. Design/methodology/approach Quasi-DNS simulations of the NACA 4412 airfoil in pre-stall conditions have been completed. The Reynolds number based on airfoil chord and freestream velocity is equal to 0.35 million, and the freestream Mach number to 0.117. Transition is triggered on both surfaces for avoiding the occurrence of laminar separation bubbles and to ensure turbulent mixing i
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Rincon, François, Francesco Califano, Alexander A. Schekochihin, and Francesco Valentini. "Turbulent dynamo in a collisionless plasma." Proceedings of the National Academy of Sciences 113, no. 15 (2016): 3950–53. http://dx.doi.org/10.1073/pnas.1525194113.

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Magnetic fields pervade the entire universe and affect the formation and evolution of astrophysical systems from cosmological to planetary scales. The generation and dynamical amplification of extragalactic magnetic fields through cosmic times (up to microgauss levels reported in nearby galaxy clusters, near equipartition with kinetic energy of plasma motions, and on scales of at least tens of kiloparsecs) are major puzzles largely unconstrained by observations. A dynamo effect converting kinetic flow energy into magnetic energy is often invoked in that context; however, extragalactic plasmas
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Kitiashvili, I. N., A. G. Kosovichev, A. A. Wray, and N. N. Mansour. "Realistic MHD simulations of magnetic self-organization in solar plasma." Proceedings of the International Astronomical Union 6, S274 (2010): 120–24. http://dx.doi.org/10.1017/s1743921311006703.

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AbstractFilamentary structure is a fundamental property of the magnetized solar plasma. Recent high-resolution observations and numerical simulations have revealed close links between the filamentary structures and plasma dynamics in large-scale solar phenomena, such as sunspots and magnetic network. A new emerging paradigm is that the mechanisms of the filamentary structuring and large-scale organization are natural consequences of turbulent magnetoconvection on the Sun. We present results of 3D radiative MHD large-eddy simulations (LES) of magnetic structures in the turbulent convective boun
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Dissertations / Theses on the topic "Simulations HPC de plasma turbulent"

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Bourne, Emily. "Non-uniform numerical schemes for the modelling of turbulence in the 5D GYSELA code." Electronic Thesis or Diss., Aix-Marseille, 2022. http://www.theses.fr/2022AIXM0412.

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Cette thèse s'inscrit dans le cadre des simulations de plasma fusion et son objectif est double: (i) développer des méthodes numériques innovantes adaptées au schéma semi-lagrangien utilisé dans le code 5D gyrocinétique GYSELA, capables de résoudre le problème de grande amplitude de fluctuations et de variation de température au bord du plasma et (ii) prendre en compte des configurations magnétiques plus réalistes que les celles jusqu'alors simulées dans le code. Je présente une nouvelle approche pour la quadrature par splines qui limite le conditionnement pour l'obtention des coefficients de
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Manas, Pierre. "Gyrokinetic simulations of turbulent impurity transport in tokamaks." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4745/document.

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La compréhension du transport d'impuretés dans le coeur des plasmas de tokamaks est un enjeu principal de la fusion par confinement magnétique. En effet les impuretés sont omni-présentes dans les tokamaks et leur présence dans le coeur a des effets négatifs sur le confinement du plasma (dilution, rayonnement). Récemment une attention particulière s'est portée sur le flux convectif turbulent dû au gradient de rotation toroïdale pour expliquer les profils plat/creux d'impuretés observés expérimentalement dans le coeur du plasma. Dans cette thèse une approche numérique a été adoptée avec l'utilis
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Soe, Min. "Thermal lattice Boltzmann simulations of variable Prandtl number turbulent flow." W&M ScholarWorks, 1997. https://scholarworks.wm.edu/etd/1539623912.

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With the advent of massively parallel processor machines, thermal lattice Boltzmann equation (TLBE) techniques offer an attractive way of handling turbulence simulations. TLBE is new form of DNS (direct numerical simulation method)--with the important advantages of being ideal for multi-parallel processors as well as being able to handle complicated geometries. Since there are many kinetic models that will reproduce the macroscopic nonlinear (compressible) transport equations, TLBE chooses that subset which can be readily solved on a discrete spatial lattice. The lattice geometry must be so ch
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Gracio, Bilro Castela Maria Luis. "Direct Numerical Simulations of plasma-assisted ignition in quiescent and turbulent flow conditions." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLC042/document.

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La combustion assistée par plasma a reçu une attention croissante dans les deux communautés de plasma et de combustion. Les décharges Nanoseconde Répétitive Pulsée (NRP) sont des techniques prometteuse et efficaces pour initier et contrôler les processus de la combustion en particulier quand les systèmes d’allumage conventionnels sont inefficaces ou trop coûteux en énergie. Néanmoins, les phénomènes rencontrés dans la combustion assistée par plasma sont encore mal connus. Les études numériques présentées dans la littérature sont limitées à des simulations 1-D et 2-D dans des conditions au repo
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Colin, Clothilde. "Turbulent transport modeling in the edge plasma of tokamaks : verification, validation, simulation and synthetic diagnostics." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4350/document.

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La possibilité de produire de l'énergie en utilisant la fusion par confinement magnétique est un défi scientifique et technologique. La perspective d'ITER transmet des signaux forts afin d'intensifier les efforts de modélisation pour les plasmas de fusion. Le succès de la fusion est conditionnée par la qualité du confinement du plasma dans le cœur du réacteur et par le contrôle des flux de particules et de chaleur qui arrivent sur la paroi. Les deux phénomènes sont liés au transport turbulent. L'étude de ces phénomènes est d'autant plus compliquée que la géométrie magnétique est complexe. Cela
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Lalescu, Cristian. "Test particle transport in turbulent magnetohydrodynamic structures." Doctoral thesis, Universite Libre de Bruxelles, 2011. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209908.

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Turbulent phenomena are found in both natural (e.g. the Earth's oceans, the Sun's corona) and artificial (e.g. flows through pipes, the plasma in a tokamak device) settings; evidence suggests that turbulence is usually the normal behaviour in most cases. Turbulence has been studied extensively for more than a century, but a complete and consistent theoretical description of it has not yet been proposed. It is in this context that the motion of particles under the influence of turbulent fields is studied in this work, with direct numerical simulations. The thesis is structured in three main par
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Book chapters on the topic "Simulations HPC de plasma turbulent"

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Coroniti, F. V. "Space Plasma Turbulent Dissipation: Reality or Myth?" In Space Plasma Simulations. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5454-0_24.

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Lewandowski, J. L. V., W. W. Lee, and Z. Lin. "Gyrokinetic Simulations of Plasma Turbulence on Massively Parallel Computers." In High Performance Computing — HiPC 2001. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45307-5_9.

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Gondarenko, N. A., and P. N. Guzdar. "Structure of turbulent irregularities in high-latitude plasma patches-3D nonlinear simulations." In Disturbances in Geospace: The Storm-Substorm Relationship. American Geophysical Union, 2003. http://dx.doi.org/10.1029/142gm17.

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Lago, Rafael, Michael Obersteiner, Theresa Pollinger, et al. "EXAHD: A Massively Parallel Fault Tolerant Sparse Grid Approach for High-Dimensional Turbulent Plasma Simulations." In Software for Exascale Computing - SPPEXA 2016-2019. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47956-5_11.

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Heene Mario and Pflüger Dirk. "Efficient and scalable distributed-memory hierarchization algorithms for the sparse grid combination technique." In Advances in Parallel Computing. IOS Press, 2016. https://doi.org/10.3233/978-1-61499-621-7-339.

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Finding solutions to higher dimensional problems, such as the simulation of plasma turbulence in a fusion device as described by the five-dimensional gyrokinetic equations, is a grand challenge facing current and future high performance computing (HPC). The sparse grid combination technique is a promising approach to the solution of these problems on large scale distributed memory systems. The combination technique numerically decomposes a single large problem into multiple moderately sized partial problems that can be computed in parallel, independently and asynchronously of each other. The a
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Dannert Tilman, Marek Andreas, and Rampp Markus. "Porting Large HPC Applications to GPU Clusters: The Codes GENE and VERTEX." In Advances in Parallel Computing. IOS Press, 2014. https://doi.org/10.3233/978-1-61499-381-0-305.

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We have developed GPU versions for two major high-performance-computing (HPC) applications originating from two different scientific domains. GENE [1,2] is a plasma microturbulence code which is employed for simulations of nuclear fusion plasmas. VERTEX [3,4,5] is a neutrino-radiation hydrodynamics code for “first principles”-simulations of core-collapse supernova explosions [6,7,8]. The codes are considered state of the art in their respective scientific domains, both concerning their scientific scope and functionality as well as the achievable compute performance, in part
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Pasupuleti, Murali Krishna. "AI-Driven Fusion: Unlocking Net-Positive Energy for a Sustainable Future." In AI-Enhanced Fusion Energy: Achieving the First Net-Positive Reactor. National Education Services, 2025. https://doi.org/10.62311/nesx/32251.

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Abstract AI-driven fusion energy is revolutionizing the path toward net-positive nuclear fusion, offering a sustainable and limitless power source for the future. By integrating machine learning, high-performance computing (HPC), and real-time plasma control algorithms, AI is accelerating breakthroughs in tokamak, stellarator, and inertial fusion reactor designs. AI-powered predictive modeling, reinforcement learning-based plasma stabilization, and automated reactor optimization are significantly improving plasma confinement, energy efficiency, and fusion scalability. Additionally, AI is enhan
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Conference papers on the topic "Simulations HPC de plasma turbulent"

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Tskhakaya, David, Alejandro Soba, Ralf Schneider, Mattias Borchardt, Erven Yurtesen, and Jan Westerholm. "PIC/MC Code BIT1 for Plasma Simulations on HPC." In 2010 18th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (PDP). IEEE, 2010. http://dx.doi.org/10.1109/pdp.2010.47.

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Reynolds-Barredo, J. M., D. E. Newman, J. M. Reynolds-Barredo, R. Sanchez, and L. A. Berry. "Modelling parareal convergence in 2D drift wave plasma turbulence." In 2012 International Conference on High Performance Computing & Simulation (HPCS). IEEE, 2012. http://dx.doi.org/10.1109/hpcsim.2012.6267004.

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JOU, W. H., and JAMES RILEY. "On direct numerical simulations of turbulent reacting flows." In 19th AIAA, Fluid Dynamics, Plasma Dynamics, and Lasers Conference. American Institute of Aeronautics and Astronautics, 1987. http://dx.doi.org/10.2514/6.1987-1324.

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Joiner, Nathan, Akira Hirose, and William Dorland. "Gyrokinetic simulation of micro-turbulence in magnetically confined plasmas." In 21st International Symposium on High Performance Computing Systems and Applications (HPCS'07). IEEE, 2007. http://dx.doi.org/10.1109/hpcs.2007.18.

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Shaikh, Dastgeer, G. P. Zank, M. Maksimovic, et al. "Self-consistent Simulations of Plasma-Neutral in a Partially Ionized Astrophysical Turbulent Plasma." In TWELFTH INTERNATIONAL SOLAR WIND CONFERENCE. AIP, 2010. http://dx.doi.org/10.1063/1.3395827.

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Glimm, J., and Xiaolin Li. "Validation of Rayleigh-Taylor turbulent mixing simulations for real fluids." In The 33rd IEEE International Conference on Plasma Science, 2006. ICOPS 2006. IEEE Conference Record - Abstracts. IEEE, 2006. http://dx.doi.org/10.1109/plasma.2006.1707008.

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Mullenix, Nathan, Datta Gaitonde, and Miguel Visbal. "A Plasma-Actuator-Based Method to Generate a Supersonic Turbulent Boundary Layer Inflow Condition for Numerical Simulations." In 20th AIAA Computational Fluid Dynamics Conference. American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-3556.

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Cambareri, Joseph J., and Igor A. Bolotnov. "Interface Tracking Simulations of Two-Phase Flow Utilizing Adaptive Meshing Capabilities." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81247.

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Due to the increase of computing efficiency and power, full-resolution two-phase flow simulations have become a practical research tool for model development and analysis of reactor flows. The expansion of state-of-the-art high performance computing (HPC) facilities allows for the use of direct numerical simulation (DNS) coupled with Interface Tracking Methods (ITM) to perform full resolution simulations. Given adequate spatial and temporal resolution, DNS can resolve all relevant turbulent scales, allowing for the extraction of high quality and detailed turbulent and two-phase flow numerical
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Vasilopoulos, Ilias, Paolo Adami, Matthias Voigt, Marcus Meyer, and Ronald Mailach. "Roughness Investigations on In-Service High-Pressure Compressor Blades – Part II: Roughness Parameterization and CFD-Based Modelling of its Impact on Turbulent Flows." In ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-101157.

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Abstract The two-part publication deals with roughness investigations on in-service high-pressure compressor (HPC) blades, both in terms of measurements and simulations. In this paper (Part II), first, stripe measurements of surface roughness coming from the suction side of the blades are conducted, using a highly accurate Alicona measuring device (see Part I for details of the measurement approach). Then, these roughness distributions are used to construct the walls of zero-pressure-gradient, fully turbulent channel flow simulations. Body-fitted unstructured grids of up to 80M nodes are gener
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Sreeyasunath, S., and E. Y. K. Ng. "Prediction of High Pressure Axial Compressor Stage Flow Using a Circumferential Average Approach." In ASME 1997 Turbo Asia Conference. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-aa-011.

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A solver for compressible turbulent flow has been developed for a single stage environment. The current work presents the results of numerical simulations of ‘proposed high pressure compressor’ (HPC) using an exact geometry dimensions with full flow conditions. The flow solver is based on the Reynolds averaged Navier-Stokes (RNS) equations in which the algebraic Baldwin-Lomax model is adopted. This numerical scheme simulates the steady flow phenomena of stator-rotor interaction in single stage environment. The numerical method used in the solver serves as a basis for many CFD works in the grou
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Reports on the topic "Simulations HPC de plasma turbulent"

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Theilhaber, K., G. Laval, and D. Pesme. Numerical Simulations of Turbulent Trapping in the Weak Beam-Plasma Instability. Defense Technical Information Center, 1986. http://dx.doi.org/10.21236/ada170108.

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