Gotowe bibliografie tematyczne / Rotor/stator simulations

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Gotowa bibliografia na temat „Rotor/stator simulations”

Autor: Grafiati
Data publikacji: 30 listopada 2024
Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Rotor/stator simulations"

1

Tang, Jing, Jie Chen, Kan Dong, Yongheng Yang, Haichen Lv, and Zhigang Liu. "Modeling and Evaluation of Stator and Rotor Faults for Induction Motors." Energies 13, no. 1 (2019): 133. http://dx.doi.org/10.3390/en13010133.

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The modeling of stator and rotor faults is the basis of the development of online monitoring techniques. To obtain reliable stator and rotor fault models, this paper focuses on dynamic modeling of the stator and rotor faults in real-time, which adopts a multiple-coupled-circuit method by using a winding function approach for inductance calculation. Firstly, the model of the induction machine with a healthy cage is introduced, where a rotor mesh that consists of a few rotor loops and an end ring loop is considered. Then, the stator inter-turn fault model is presented by adding an extra branch w
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Karanayil, Baburaj, Muhammed Fazlur Rahman, and Colin Grantham. "Identification of Induction Motor Parameters in Industrial Drives with Artificial Neural Networks." Advances in Fuzzy Systems 2009 (2009): 1–10. http://dx.doi.org/10.1155/2009/241809.

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This paper presents a new method of online estimation of the stator and rotor resistance of the induction motor in the indirect vector-controlled drive, with artificial neural networks. The back propagation algorithm is used for training of the neural networks. The error between the rotor flux linkages based on a neural network model and a voltage model is back propagated to adjust the weights of the neural network model for the rotor resistance estimation. For the stator resistance estimation, the error between the measured stator current and the estimated stator current using neural network
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Reinmo¨ller, U., B. Stephan, S. Schmidt, and R. Niehuis. "Clocking Effects in a 1.5 Stage Axial Turbine—Steady and Unsteady Experimental Investigations Supported by Numerical Simulations." Journal of Turbomachinery 124, no. 1 (2001): 52–60. http://dx.doi.org/10.1115/1.1425811.

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The interaction between rotor and stator airfoils in a multistage turbomachine causes an inherently unsteady flow field. In addition, different relative circumferential positions of several stator rows and rotor rows, respectively, have an influence on the flow behavior in terms of loss generation, energy transport and secondary flow. The objective of the presented study is to investigate the effects of stator airfoil clocking on the performance of a 1-1/2 stage axial cold air turbine. The investigated axial turbine consists of two identical stators. The low aspect ratio of the blades and thei
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Xu, Jieqiong, Qunhong Li, and Shimin Wang. "Impulsive Control of the Rotor-Stator Rub Based on Phase Characteristic." Abstract and Applied Analysis 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/495747.

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An impulsive control method is proposed to eliminate the rotor-stator rubbing based on the phase characteristic. The relation between the vibration energy and the phase difference suggests the starting point for controlling the rotor-stator rubbing by implementing impulse. When the contact between the rotor and the stator occurs, the impulse is implemented inx-direction andy-direction several times to avoid the rotor-stator rubbing. The practical feasibility of this approach is investigated by numerical simulations.
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Wang, Ziwei, Xiong Jiang, Ti Chen, Yan Hao, and Min Qiu. "Numerical simulation of transonic compressor under circumferential inlet distortion and rotor/stator interference using harmonic balance method." Modern Physics Letters B 32, no. 12n13 (2018): 1840021. http://dx.doi.org/10.1142/s0217984918400213.

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Simulating the unsteady flow of compressor under circumferential inlet distortion and rotor/stator interference would need full-annulus grid with a dual time method. This process is time consuming and needs a large amount of computational resources. Harmonic balance method simulates the unsteady flow in compressor on single passage grid with a series of steady simulations. This will largely increase the computational efficiency in comparison with the dual time method. However, most simulations with harmonic balance method are conducted on the flow under either circumferential inlet distortion
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Akwa, J. V., and A. P. Petry. "STATORS USE INFLUENCE ON THE PERFORMANCE OF A SAVONIUS WIND ROTOR USING COMPUTATIONAL FLUID DYNAMICS." Revista de Engenharia Térmica 10, no. 1-2 (2011): 63. http://dx.doi.org/10.5380/reterm.v10i1-2.61965.

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This paper aims at verifying the influence of using five kinds of stators in the averaged moment and power coefficients of a Savonius wind rotor using computational fluid dynamics (CFD). The analyzed stators have cylindrical shape with two and three openings, one and four deflector blades and walls shaped like a wings. The equations of continuity, Reynolds Averaged Navier-Stokes – RANS and the Eddy Viscosity Model k-ω SST, in its Low-Reynolds approaches, with hybrid near wall treatment; are numerically solved using the commercial software Star-CCM+, based on Finite Volume Method, resulting in
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Rai, M. M., and N. K. Madavan. "Multi-Airfoil Navier–Stokes Simulations of Turbine Rotor–Stator Interaction." Journal of Turbomachinery 112, no. 3 (1990): 377–84. http://dx.doi.org/10.1115/1.2927670.

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An accurate numerical analysis of the flows associated with rotor–stator configurations in turbomachinery can be extremely helpful in optimizing the performance of turbomachinery. In this study the unsteady, thin-layer, Navier–Stokes equations in two spatial dimensions are solved on a system of patched and overlaid grids for an axial-turbine rotor–stator configuration. The governing equations are solved using a finite-difference, upwind algorithm that is set in an iterative, implicit framework. Results are presented in the form of pressure contours, time-averaged pressures, unsteady pressures,
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Brandão, André, Aline Souza de Paula, Marcelo Amorim Savi, and Fabrice Thouverez. "Nonlinear Dynamics and Chaos of a Nonsmooth Rotor-Stator System." Mathematical Problems in Engineering 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/8478951.

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Rotor systems have wide applications in industries, including aero engines, turbo generators, and gas turbines. Critical behaviors promoted by the system unbalance and the contact between rotor and stator lead to important nonlinearities on system dynamics. This paper investigates the complex behavior presented by a rotor-stator system’s dynamics due to intermittent contact. A four-degree-of-freedom Jeffcott nonsmooth rotor/stator system is used to describe the rotor behavior, while a viscoelastic suspended rigid cylinder represents the stator. Numerical simulations are carried out showing ric
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Gaetani, Paolo, and Giacomo Persico. "Influence of the Rotor-Driven Perturbation on the Stator-Exit Flow within a High-Pressure Gas Turbine Stage." International Journal of Turbomachinery, Propulsion and Power 6, no. 3 (2021): 28. http://dx.doi.org/10.3390/ijtpp6030028.

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In stator–rotor interaction studies on axial turbines, the attention is commonly focused on the unsteady rotor aerodynamics resulting from the periodic perturbations induced by the stator flow structures. Conversely, less interest has been historically attracted regarding the influence of the rotor on the flow released by the stator, correlated to propagation of the blade potential field upstream of the rotor leading edge. In this paper, experiments in the research high-pressure turbine of the Laboratory of Fluid-Machines of the Politecnico di Milano, performed by applying a fast-response aero
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Ahriche, Aimad. "An Approach of Position and Torque Estimation for Induction Motor based Sensor-less Drive." International Journal of Circuits, Systems and Signal Processing 17 (March 6, 2023): 44–49. http://dx.doi.org/10.46300/9106.2023.17.5.

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This paper presents a new approach with stability analysis, simulation and experimental investigation of a sliding mode based estimator for rotor-position and torque-load calculation in high performance speed-sensor-less AC motor drive. The proposed algorithm is built based on the induction motor (IM) fluxes equations for two rotationg referential frames. The First equation calculates the stator flux vector while the second gives the rotor flux vector. Moreover, the stator flux equation is linked to a stator-flux rotating referential frame and the rotor flux equation is linked to a rotor-flux
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Rozprawy doktorskie na temat "Rotor/stator simulations"

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JACQUES, REMI. "Simulations numeriques d'ecoulements transitionnels et turbulents dans des configurations de type rotor-stator." Paris 11, 1997. http://www.theses.fr/1997PA112386.

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Ce travail de these porte sur l'etude numerique des ecoulements transitionnels et turbulents dans une cavite confinee formee de deux disques coaxiaux dont l'un est en rotation uniforme autour de son axe de revolution (rotor), et l'autre stationnaire (stator). Les simulations numeriques sont effectuees sous l'hypothese d'axisymetrie de l'ecoulement instantane. On utilise alors un code de calcul parallelise integrant une decomposition de domaine. Plusieurs caracteristiques des ecoulements entre deux disques tournants sont reproduites : existence de couches limites sur les deux disques tournants,
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D'Haudt, Emmanuel. "Étude expérimentale de l'influence des conditions périphériques sur un écoulement turbulent de type rotor-stator : premières confrontations avec des résultats de simulations numériques." Lille 1, 2006. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2006/50376-2006-D_Haudt.pdf.

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Les recherches effectuées sur des écoulements turbulents dans des cavités interdisques ont permis de mettre en évidence l'importance des conditions aux limites. Ce présent travail a pour but de mieux comprendre les phénomènes qui régissent l'apparition de différents types d'écoulements observés dans une cavité rotor-stator non soumise à un flux radial forcé. Dans cette optique, un banc d'essais a été adapté pour étudier plus spécifiquement l'influence de deux paramètres géométriques, l'un lié à une faible différence entre le rayon des disques, l'autre relatif à la présence d'un carter permetta
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D'Haudt, Emmanuel Bois Gérard Debuchy Roger. "Étude expérimentale de l'influence des conditions périphériques sur un écoulement turbulent de type rotor-stator premières confrontations avec des résultats de simulations numériques /." Villeneuve d'Ascq : Université des sciences et technologies de Lille, 2007. https://iris.univ-lille1.fr/dspace/handle/1908/988.

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Reproduction de : Thèse de doctorat : Mécanique : Lille 1 : 2006.<br>N° d'ordre (Lille 1) :3874. Résumé en français et en anglais. Titre provenant de la page de titre du document numérisé. Bibliogr. p. 171-173.
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Peres, Noele. "A 3D pseudospectral method for cylindrical coordinates. Application to the simulations of rotating cavity flows." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4309/document.

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La simulation d'écoulements dans des cavités cylindriques en rotation présente une difficulté particulière en raison de l'apparition de singularités sur l'axe. Le présent travail propose une méthode collocative pseudospectrale suffisamment efficace et précise pour surmonter cette difficulté et résoudre les équations 3D de Navier-Stokes écrites en coordonnées cylindriques. Cette méthode a été développée dans le cadre des différentes études menées au laboratoire M2P2, utilisant une méthode collocative de type Chebychev dans les directions radiale et axiale et Fourier-Galerkin dans la direction a
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Sauvage, Bastien. "Approximation et adaptation numériques pour les écoulements en machines tournantes." Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ5045.

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Ce travail s'inscrit dans un projet de recherche dont l'objectif est de proposer des simulations numériques en fluides (CFD) capables de capturer le bruit produit par les machines tournantes.Cette thèse, au sein de ce projet, à pour objectif d'étudier des méthodes d'adaptation de maillages (instationnaires) pour des écoulements turbulents instationnaires.On commence par décrire les outils nécessaires à nos études, à savoir les méthodes numériques, les modèles de turbulences et l'adaptation de maillages. Une première partie est consacrée à l'étude de l'algorithme d'adaptation de maillage instat
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Jung, Alexander. "Berechnung der Stator-Rotor-Wechselwirkung in Turbomaschinen." [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8862171.

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Bridel-Bertomeu, Thibault. "Investigation of unsteady phenomena in rotor/stator cavities using Large Eddy Simulation." Thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/17867/1/BRIDEL_BERTOMEU.pdf.

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This thesis provides a numerical and theoretical investigation of transitional and turbulent enclosed rotating flows, with a focus on the formation of macroscopic coherent flow structures. The underlying processes are strongly threedimensional due to the presence of boundary layers on the discs and on the walls of the outer (resp. inner) cylindrical shroud (resp. shaft). The complexity of these flows poses a great challenge in fundamental research however the present work is also of importance for industrial rotating machinery, from hard-drives to space engines turbopumps - the design issues o
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Barbosa, Emerson. "Etude numérique des écoulements tridimensionnels dans des cuves cylindriques rotor-stator." Phd thesis, Université d'Evry-Val d'Essonne, 2002. http://tel.archives-ouvertes.fr/tel-00354646.

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L'écoulement d'un fluide visqueux incompressible dans une cuve cylindrique rotor-stator est étudié. Ces écoulements ont fait l'objet de récents travaux numériques tridimensionnels pour des rapports d'aspect h>1,75. On propose une étude numérique de la rupture de l'axisymétrie de l'écoulement dans une cavité de rapport d'aspect réduit (h=1 et 1,5) et des nombres de Reynolds Re<8500. Les équations de Navier-Stokes sont résolues par un code vitesse-pression en coordonnées cylindriques qui repose sur des méthodes aux différences finies du second ordre. Deux approches numériques sont mises en œuvre
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Batailly, Alain. "Simulation de l'interaction rotor/stator pour des turbo-machines aéronautiques en configuration non-accidentelle." Phd thesis, Ecole centrale de nantes - ECN, 2008. http://tel.archives-ouvertes.fr/tel-00364945.

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Dans le cadre de la conception de turbo-machines aéronautiques, l'amélioration du rendement est assurée, entre autres, par la diminution du jeu fonctionnel entre les parties tournantes et statiques, telles que les roues aubagées et le carter qui les entoure. Cette stratégie a des conséquences sur le comportement vibratoire des turbo-machines en favorisant l'apparition de contacts structuraux entre les sommets d'aubes et le carter, par exemple. Lorsque plusieurs points de contact co-existent, des phénomènes d'interaction modale peuvent apparaître. La simulation de ces phénomènes, potentiellemen
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Queguineur, Matthieu. "Stability and control of unsteady phenomena in rotor/stator cavities using Large Eddy Simulation." Thesis, Toulouse, INPT, 2020. http://www.theses.fr/2020INPT0043.

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Les phénomènes instationnaires dans les cavités rotor/stator sont connus pour être la source de dangereuses vibrations dans les turbopompes spatiales. Bien que plusieurs mesures palliatives aient été prises en comptes durant les phases de conception, des campagnes d’essais ont mis en évidence de fortes oscillations des écoulements internes pouvant menacer le moteur cryogénique des lanceurs. Aujourd’hui, l’origine de ce phénomène, appelé «bandes de pression », est peu compris et difficile à prédire numériquement. L’objectif de cette thèse est d’analyser les mécanismes physiques de ce phénomène
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Książki na temat "Rotor/stator simulations"

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Center, Ames Research, ed. Three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction. National Aeronautics and Space Administration, Ames Research Center, 1988.

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Center, Ames Research, ed. Three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction. National Aeronautics and Space Administration, Ames Research Center, 1988.

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Boretti, A. A. Three-dimensional Euler time accurate simulations of fan rotor-stator interactions. National Aeronautics and Space Administration, Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1990.

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Boretti, A. A. Three-dimensional Euler time accurate simulations of fan rotor-stator interactions. Lewis Research Centre, 1990.

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Lewis Research Center. Institute for Computational Mechanics in Propulsion., ed. Three-dimensional Euler time accurate simulations of fan rotor-stator interactions. National Aeronautics and Space Administration, Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1990.

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Boretti, A. A. Three-dimensional Euler time accurate simulations of fan rotor-stator interactions. National Aeronautics and Space Administration, Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1990.

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Three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction. National Aeronautics and Space Administration, Ames Research Center, 1988.

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Części książek na temat "Rotor/stator simulations"

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Neuhauser, Magdalena, Francis Leboeuf, Jean-Christophe Marongiu, Etienne Parkinson, and Daniel Robb. "Simulations of Rotor–Stator Interactions with SPH-ALE." In Advances in Hydroinformatics. Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4451-42-0_29.

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Song, An, Xiang Luo, Zhongliang He, and Jian He. "Numerical Investigation on Flow and Heat Transfer of a Rotor–Stator Cavity with Labyrinth Seal." In Computational and Experimental Simulations in Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-42515-8_56.

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Giangaspero, G., M. Almquist, K. Mattsson, and E. van der Weide. "Unsteady Simulations of Rotor Stator Interactions Using SBP-SAT Schemes: Status and Challenges." In Lecture Notes in Computational Science and Engineering. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19800-2_21.

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Peng, Fangfang, Baojun Yu, Yongyi Guo, and Hancheng Jiang. "Structural Design and Feasibility Analysis of a Double-Rotor Wheeled Wall-Climbing Robot." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-97-7887-4_2.

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Abstract In this paper, a double-rotor wheeled wall climbing robot is designed and a new transition method is proposed. The wall-climbing robot is using the counter-thrust force generated when the rotor rotates at high speed as the adsorption force, so that the robot can adsorb stably on the wall without slipping and tilting and can realize the transition from the ground to the vertical wall. The forces of the robot in different motion states were analyzed, and the overall structure of the robot was verified to meet the strength requirements by setting appropriate loads through finite element
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Serre, Eric, Patrick Bontoux, and Brian Launder. "Studies of Transitional and Turbulent Flows in Rotor-Stator Cavity Using High-Performance Computations." In Direct and Large-Eddy Simulation V. Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2313-2_22.

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Zou, Minxuan, Gang Zhang, Shiji Bian, Yuliang He, and Xu Li. "Dynamics Analysis of Marine Gas Turbine Modelled Rotor." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-97-7887-4_48.

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Abstract Since the beginning of the 21st century, more and more countries have taken the gas turbine as the preferred power for the main battle ships at sea. The gas turbine has high reliability and long service life, which meets the requirements of high-intensity and long-term offshore operations. This paper takes the physical model of the rotor of the dynamic vortex section of the marine gas turbine as the basis, combines the relevant theories, and ensures that the static characteristics of the rotor are basically unchanged in the case of modelling treatment. ANSYS software is used to carry
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Shahangian, Navid, Leila Sharifian, Rüdiger Beykirch, Albert Jeckel, Silja Klier, and Lothar Grupe. "Simulation of Oil Flow Behavior in the Air Gap between Rotor and Stator." In Proceedings. Springer Fachmedien Wiesbaden, 2023. http://dx.doi.org/10.1007/978-3-658-42940-9_6.

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Wang, Zhiqiang, Huang Yao, Weijun Bao, and Dianrong Gao. "Motion Simulation and Statics Analysis of the Stator and Rotor of Low Speed High Torque Water Hydraulic Motor." In Intelligent Robotics and Applications. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-22879-2_16.

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Di Gerlando A., Foglia G., Iacchetti M., and Perini R. "Magnetic Circuit Based Criteria for Transformation of FEM 3D Structures to FEM 2D Equivalent Problems of Radial Flux, PM Rotating Machines." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2010. https://doi.org/10.3233/978-1-60750-604-1-270.

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Some transformation criteria, based on a magnetic circuit approach, are analysed, aimed to reduce a 3D problem into an equivalent 2D formulation. The method is useful for cylindrical air-gap PM machines, in case of different axial length of PMs and of stator and rotor core portions, or in case of skewing. The paper describes how to modify material properties and/or geometrical quantities, in such a way to obtain correct results by 2D FEM simulations; 3D and 2D FEM results are compared, also developing and analysing corresponding magnetic circuit models.
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Pustovetov, Mikhail, Konstantin Shukhmin, Sergey Goolak, Jonas Matijošius, and Kateryna Kravchenko. "The Shaft Load Simulations and Calculations of the IM Efficiency Using OrCAD PSpice Designer Software: Obtaining Static Characteristics Data Based on Dynamic Model Modifications of Electrical Machines." In Induction Motor Computer Models in Three-Phase Stator Reference Frames: A Technical Handbook. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815124309123010006.

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In this chapter, authors suggest an approach to the shaft load simulations and calculations of the electrical machine efficiency with the use of OrCAD PSpice Designer Software, and in particular, visual programming of analogue component blocks. Also, a method for modifying the EM dynamic model is put forward. This method enables researchers and designers to acquire data for plotting static mechanical, electromechanical and performance curves vs the angular speed of the rotor. These data are obtained by modifications to the block-diagram of the motion equation of the drive where the instantaneo
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Streszczenia konferencji na temat "Rotor/stator simulations"

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Sato, Masanori, Takashi Nagumo, Kazuyuki Toda, and Makoto Yamamoto. "Computation of Rotor/Stator Interaction With Hydrogen-Fuelled Combustion." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45618.

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For the next-generation aircraft, a new propulsion system using hydrogen fuel has been proposed. In the present system, hydrogen fuel injected from a stator surface combusts in the turbine passages, accordingly, the conventional combustor can be cut out. The advantage of this system is that we can design a lighter and smaller engine with low emission. We have demonstrated the realizability of this system by using the cycle analysis and the numerical simulations. Through the previous studies, it was confirmed that the rotor/stator interaction has to be investigated, because the hydrogen combust
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Graf, Martin B., and Om P. Sharma. "Effects of Downstream Stator Pressure Field on Upstream Rotor Performance." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-507.

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Results of numerical simulations conducted for a high pressure compressor rotor with two different levels of tip clearance are presented. A three-dimensional, steady, Reynolds-Averaged Navier-Stokes code was utilized to perform the computations. The simulations were executed over a range of flow coefficients by specifying different axisymmetric radial profiles in static pressure downstream of the rotor. In this manner, the effect of the downstream stator row was approximated using a simple, circumferentially averaged, radial pressure profile as the boundary condition behind the rotor. The back
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RAI, MAN, and NATERI MADAVAN. "Multi-airfoil Navier-Stokes simulations of turbine rotor-stator interaction." In 26th Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-361.

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Zhou, Haowei, Pengcheng Du, and Fangfei Ning. "Time step criteria for rotor-stator unsteady simulations of turbomachinery." In GPPS Chania24. GPPS, 2024. http://dx.doi.org/10.33737/gpps24-tc-065.

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With the rapid improvement of computing power, unsteady Reynolds-Averaged Navier-Stokes (U-RANS) solvers are increasingly used to get a deeper comprehension of the rotor-stator unsteady flows inside turbomachinery. The dual-time stepping method is adopted in most U-RANS solvers and the determination of the optimal size of physical time step is a crucial procedure for rotor-stator U-RANS simulations, and it is the primary purpose of this paper. The criteria for determining the size of physical time step for rotor-stator interactions with and without filtering mixing plane were proposed through
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Dawes, W. N. "A Numerical Study of the Interaction of a Transonic Compressor Rotor Overtip Leakage Vortex With the Following Stator Blade Row." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-156.

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This paper presents a numerical simulation of the unsteady flow in a transonic compressor stage. The simulations were performed using an unstructured mesh, 3D Navier-Stokes solver with a sliding interface between the mesh blocks containing the rotor and stator blades to permit a time-resolved calculation. The focus in the simulation is the endwall flow, its contrast with the mid-span flow and, in particular, the interaction of the rotor overtip leakage flow with the downstream stator. The endwall region of both the rotors and the stators was predicted to be proportionally responsible for much
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Galpin, Paul, Thorsten Hansen, Georg Scheuerer, et al. "Validation of Transonic Axial Compressor Stage Unsteady-State Rotor-Stator Simulations." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64786.

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The paper describes the validation of steady-state and unsteady CFD simulations against experimental data from a single-stage, transonic axial compressor stage. The experimental data include overall compressor performance, high-resolution traverses of total pressure and total temperature, and unsteady-state total pressure measurements downstream of the rotor. Various numerical rotor-stator interaction methods were applied across the operational speedline. These included a steady-state method mixing plane, and a transient time inclination method that accounts for the unsteady rotor to stator pi
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Ramakrishna, P. V., and M. Govardhan. "Studies on Downstream Stator With Rotor Re-Staggering and Forward Sweeping in a Subsonic Axial Compressor Stage." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65101.

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The present numerical work studies the flow field in subsonic axial compressor stator passages for: (a) preceding rotor sweep (b) preceding rotor re-staggering (three stagger angle changes: 0°, +3° and +5°); and (c) stator sweeping (two 20° forward sweep schemes). The following are the motives for the study: at the off-design conditions, compressor rotors are re-staggered to alleviate the stage mismatching by adjusting the rows to the operating flow incidence. Fundamental to this is the understanding of the effects of rotor re-staggering on the downstream component. Secondly, sweeping the roto
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Goldman, Paul, and Agnes Muszynska. "Chaotic Behavior of Rotor/Stator Systems With Rubs." In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-387.

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This paper outlines the dynamic behavior of externally excited rotor/stator systems with occasional, partial rubbing conditions. The observed phenomenon have one major source of a strong nonlinearity: transition from no contact to contact state between mechanical elements, one of which is rotating. This results in variable stiffness and damping, impacting, and intermittent involvement of friction. A new model for such a transition (impact) is developed. In case of the contact between rotating and stationary elements, it correlates the local radial and tangential (“super ball”) effects with glo
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Guérin, Nicolas, Anders Thorin, Fabrice Thouverez, Mathias Legrand, and Patricio Almeida. "Thermomechanical Model Reduction for Efficient Simulations of Rotor-Stator Contact Interaction." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75880.

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Turbomachinery rotor-stator unilateral contact induced interactions play a growing role in lifecycle analysis and thus motivate the use of accurate numerical prediction tools. Recent literature confirmed by ongoing in-house experiments have shown the importance of thermomechanical coupling effects in such interactions. However, most available (possibly reduced-order) models are restricted to the sole mechanical aspects. This work describes a reduction technique of thermomechanical models involving unilateral contact and frictional contact occurrences between rotor and stator components. The pr
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RAI, MAN. "Unsteady three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction." In 23rd Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 1987. http://dx.doi.org/10.2514/6.1987-2058.

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Raporty organizacyjne na temat "Rotor/stator simulations"

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Chatagny, Laurent. PR-471-16206-R02 Suction Piping Effect on Pump Performance CFD. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011562.

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CFD simulations of pump suction piping coupled to a double suction volute pump were performed with oil at a viscosity of ~90 cSt. Two variants of the suction piping were modeled in order to investigate their effect on the pump performance. Measurement data obtained during PRCI project CPR-15A were used to validate the CFD setup. The CFD results were mostly in line with the measurements, in particular performance and pressure tap values in the suction piping. The pump rotor forces predicted by CFD however showed significant differences to the measured values. The CFD setup presented in this rep
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