Relevant bibliographies by topics / Torque-speed curve

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

Academic literature on the topic 'Torque-speed curve'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Torque-speed curve"

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Aree, Pichai. "Analytical determination of speed-torque and speed-current curves of single-cage induction motor under supply voltage and frequency variations." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 6 (November 5, 2018): 2279–98. http://dx.doi.org/10.1108/compel-09-2017-0404.

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Purpose An important characteristic of most induction motors is speed- or slip-torque curve. A simplified Kloss formula is widely used for describing speed-torque characteristic because it is fairly simple. Only two parameters related to break-down torque and break-down slip are regarded as input parameters. Because this simplified formula ignores an unknown parameter that is a ratio between Thevenin’s and rotor resistances, an accurate torque curve characteristic may not be fully obtained over an entire speed range. Moreover, the conventional Kloss formula does not offer a speed-torque curve calculation when motor’s supply voltages and frequencies are deviated from rated values. Hence, the purpose of this paper is to present an extension of Kloss formula, which allows a more precise estimation of speed-torque and speed-current curves of single-cage three-phase induction motors over a wide range of speeds at different motor’s operating voltages, frequencies and rotor-circuit resistances. Design/methodology/approach The analytical approach is mainly used for determining all key parameters in the Kloss formula using a known set of data such as rated torque, starting torque, break-down torque and rated speed, in which they can be obtained from motor’s manufacturer. Findings The speed-torque and speed-current curves taken from laboratory measurements are compared with those from the calculations. Good agreements between them are fully observed. Originality/value This analytical approach is useful in providing an accurate speed-torque and speed-current curves required for most steady-state analysis.
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Chan, T. F. "Determination of the Torque-Speed Characteristic of an Induction Motor Using a Curve-Fitting Technique." International Journal of Electrical Engineering & Education 30, no. 4 (October 1993): 360–65. http://dx.doi.org/10.1177/002072099303000410.

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Determination of the torque-speed characteristic of an induction motor using a curve-fitting technique This paper describes the use of a curve-fitting technique to deduce the nominal torque-speed characteristic of a three-phase induction motor from the speed data obtained in a no-load acceleration test. Experimental results show that the fitted curve is reasonably close to the torque-speed characteristic obtained from an actual load test.
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Wang, Gui Juan. "The Experimental Study on "Soft Start" of Mine Permanent Magnet Coupling." Applied Mechanics and Materials 727-728 (January 2015): 403–5. http://dx.doi.org/10.4028/www.scientific.net/amm.727-728.403.

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The "soft start" problem was studied for magnetic coupling in coal mine by experimental method. At first, the starting condition of magnetic coupling was analysed. Aaccording to the load characteristics of conveyor. Secondly, the torque characteristic curve, speed characteristic curve and current starting curve were plotted using the experimental data. From three kinds of characteristic curve we have conclusion that the output torque and output speed is much less than the input torque and input speed, the starting current value with the load was less than the starting current value when directly connected. That means magnetic coupling with the soft start characteristic.
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Martinez-Roman, J., and L. Serrano-Iribarnegaray. "Determining torque–speed curve of two-speed deep cage lift asynchronous machines." IEE Proceedings - Electric Power Applications 152, no. 3 (2005): 455. http://dx.doi.org/10.1049/ip-epa:20040988.

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Nord, Ashley L., Yoshiyuki Sowa, Bradley C. Steel, Chien-Jung Lo, and Richard M. Berry. "Speed of the bacterial flagellar motor near zero load depends on the number of stator units." Proceedings of the National Academy of Sciences 114, no. 44 (October 16, 2017): 11603–8. http://dx.doi.org/10.1073/pnas.1708054114.

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The bacterial flagellar motor (BFM) rotates hundreds of times per second to propel bacteria driven by an electrochemical ion gradient. The motor consists of a rotor 50 nm in diameter surrounded by up to 11 ion-conducting stator units, which exchange between motors and a membrane-bound pool. Measurements of the torque–speed relationship guide the development of models of the motor mechanism. In contrast to previous reports that speed near zero torque is independent of the number of stator units, we observe multiple speeds that we attribute to different numbers of units near zero torque in both Na+- and H+-driven motors. We measure the full torque–speed relationship of one and two H+units inEscherichia coliby selecting the number of H+units and controlling the number of Na+units in hybrid motors. These experiments confirm that speed near zero torque in H+-driven motors increases with the stator number. We also measured 75 torque–speed curves for Na+-driven chimeric motors at different ion-motive force and stator number. Torque and speed were proportional to ion-motive force and number of stator units at all loads, allowing all 77 measured torque–speed curves to be collapsed onto a single curve by simple rescaling.
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Li, Qiang, and Chang Gao Xia. "Research of Electric Power Steering System Assistance Characteristic Based on the Identification of the Road." Advanced Materials Research 756-759 (September 2013): 4401–6. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.4401.

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Study of traditional assist characteristic cure does not take into account the difference of steering resistance torque caused by different road adhesion coefficient. Vehicle dynamics analysis model is established based on ADAMS/CAR. Simulation of steering wheel torque is realized under different road conditions. Departure from the ideal boost characteristics requirements and combined with ideal steering wheel torque under different speed and lateral acceleration., the article built assist characteristic curve under a certain road conditions. The system can real-time select the assist characteristic curve through identifying the vehicle traveling road conditions by the way of BP neural network. The theory provided a feasible method for the improvement of the EPS system performance.
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Menegaldo, Luciano Luporini, Lyon Aragão, Thiago Matta, and Liliam Fernandes de Oliveira. "Hip Adduction and Abduction Torque-angle Curve Characterization of Speed Skating Athletes." International Journal of Sports Medicine 41, no. 04 (January 14, 2020): 248–54. http://dx.doi.org/10.1055/a-1073-7754.

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Abstract Speed skating is a cyclic sport which involves the hip abductor muscles, impelling the participant forwards, and adductor muscles, in the recovery phase and decelerating the abduction movement eccentrically. This paper has the objective of describing and comparing the abduction/adduction torque-angle curves of speed skating athletes (N=10) with a group of non-practitioners young participants (N=10). Both groups presented similar peak torques and electromyography patterns for tensor fascia lata, gluteus medius, long adductor and adductor magnus. However, athletes showed higher torque-angle curve integral and abduction and adduction peak torques at different hip angles than the control group. These findings suggest an adaptation of their musculotendon actuators and a better capacity to generate mechanical work and power during a propulsion-recovery cycle.
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Wang, Guang Ping, Qing Nian Wang, Peng Yu Wang, and Wen Wang. "Engine Control of Power-Split Hybrid Vehicle." Applied Mechanics and Materials 392 (September 2013): 267–71. http://dx.doi.org/10.4028/www.scientific.net/amm.392.267.

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Planetary power-split hybrid vehicle is a very common structure of hybrid electric vehicle (HEV), which achieves speed and torque double decoupled between engine and wheels. Engine always working on optimal curve is an important reason for low fuel-efficient. Engine speed is controlled by PID, and the optimal loading rate of engine is solved from engine characteristic curves; finally realization of engine working on optimal curve. Offline simulation is used for this algorithm, and comparing with many experimental results demonstrates engine works on operating point; fuel consumption is close to the official fuel consumption of Prius.
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Yates, J. W., and William J. Armbruster. "53 SPEED SPECIFIC ECCENTRIC TRAINING AND THE TORQUE-VELOCITY (T-V) CURVE." Medicine & Science in Sports & Exercise 22, no. 2 (April 1990): S9. http://dx.doi.org/10.1249/00005768-199004000-00053.

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Sakamoto, Yoshinori, Koichi Murakami, and Shinki Kikuchi. "A method for calculating the torque-speed curve of parametric induction motor." Electrical Engineering in Japan 105, no. 4 (1985): 53–60. http://dx.doi.org/10.1002/eej.4391050407.

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Dissertations / Theses on the topic "Torque-speed curve"

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Lee, Peter T. (Peter Taeyun). "Comparison of various media in teaching engineering principles : design of a D.C. motor torque/speed curve display mechanism." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/49680.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
Improving product development education depends on finding effective media with which to teach. In my thesis, I focused on a comparison between the physical intimacy with a mechanical system and a computer simulation of the same system - specifically DC motors and their torque/speed characteristics. I built a fully mechanical dynamometer that draws the torque/speed curve of a DC motor as a student grabs the motor shaft. I also designed an interactive dynamic computer simulation of the same device using a modeling and animation software package. The design of the mechanical mechanism was a task that required engineering analysis, industrial design, human factors, and a focus on the education of students. There were a number of design challenges in this device that led me to build a fairly sophisticated mechanical mechanism that draws a torque/speed curve while being simple enough to understand. The design approach and analysis method was heavily stressed in creating this model. The computer simulation was modeled directly from the mechanical model. In order to compare the teaching effectiveness of the models, I ran experiments with students comparing the mechanical device, the computer simulation, and a control, a written textbook explanation of DC motor torque/speed characteristics. From the experiments, I found that the mechanical model was most effective in teaching students, followed by the computer simulations, and finally the control test. Students felt that the hand-on aspect of the mechanical model was the most important feature that distinguished it from the others. The results from this thesis can help to guide how media might be used more effectively in education.
by Peter T. Lee.
S.M.
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Belhadi, M'hamed. "Étude de machines à réluctance variable pour une application de traction électrique : réduction des ondulations de couple et des efforts radiaux." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112185.

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Le mémoire traite de la machine à réluctance variable en proposant d'une manière simultanée et du point de vue conception des solutions à ses deux inconvénients majeurs à savoir les ondulations de couple et les efforts radiaux. Les premières se propagent le long de la chaine de transmission diminuant ainsi le confort des usagers et les deuxièmes sont à l’origine d’une nuisance sonore. Dans une première partie et en s’intéressant à une structure axiale caractérisée par une faible force radiale, un bilan sur cette structure est donc établi. En effet, une configuration à deux stators et un rotor est la plus adéquate pour éventuellement remplacer la machine radiale de référence. Cette structure axiale est comparée à cette machine de référence après avoir établi des règles de passage d’une structure à une autre. Un premier passage est effectué en gardant le même encombrement et un deuxième passage en dimensionnant la machine axiale pour satisfaire le même cahier des charges que la machine radiale. Dans une deuxième partie, le travail s’oriente vers la modification de la structure radiale de la machine de référence et son optimisation. Plusieurs modifications sont proposées dont une structure avec une cale magnétique qui est la plus performante. Des optimisations géométriques à l’aide de l’algorithme génétique sur un point de fonctionnement sont ensuite effectuées pour remédier aux deux problèmes. A la fin, un récapitulatif de plusieurs structures optimisées est proposé pour servir de référence. Le choix de la machine la plus adéquate pourra donc être effectué en faisant un compromis entre la maximisation du couple, la réduction de ses ondulations et la réduction des efforts radiaux
This report deals with switched reluctance motor by offering design solutions to the drawbacks of torque ripples and radial forces in the same time. Torque ripples reduce the user comfort and radial forces are the origin of noise. In the first part, an axial structure characterized by low radial force is analysed. Indeed, an axial configuration with two stators and one rotor is the most appropriate to replace the reference radial machine. Ones the rules of passage from one structure to another are established, the axial structure is then compared to the reference one. A first passage is made by keeping the same volume and a second one by sizing the axial machine with the same specifications as the radial one. In the second part, the work concerns the modification of radial structure of the reference machine and its optimization. Several modifications are proposed including a structure with a magnetic wedge which is the most efficient. Geometric optimization using genetic algorithm are then performed on operating points to remedy the both problems. In the end, several optimized structures are proposed. The choice of the most suitable machine can be done by making a compromise between the torque maximization, reducing its ripples and reducing radial forces
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Book chapters on the topic "Torque-speed curve"

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Pal, Subham, and Salil Haldar. "Optimization of Drilling Parameters for Composite Laminate Using Genetic Algorithm." In Advances in Civil and Industrial Engineering, 191–213. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-7206-1.ch013.

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Composite materials are preferred mostly in recent times due to their durability and ample space of applicability. Drilling is also an essential process in manufacturing, and it is frequently done to assemble products. Delamination due to drilling of the CFRP composite is considered as the primary concern in the manufacturing and assembly process. In this chapter, the empirical model for thrust force, torque, entry-delamination factor, exit-delamination factor, and eccentricity of drilling of CFRP composite is developed based on the extensive experiment. Response surface methodology is accounted to formulate a mathematical modal considering thrust force, torque, entry and exit-delamination factor, and eccentricity as response parameter and spindle speed, feed rate, and point angle as a process parameter. ANOVA is performed to check the statistical significance of the mathematical model. GA is employed to trace the optimum values of three process parameters to minimize the five response parameters. The Pareto front curve for various combinations of process parameters is also examined.
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Badler, Norman I., Cary B. Phillips, and Bonnie Lynn Webber. "Body Modeling." In Simulating Humans. Oxford University Press, 1993. http://dx.doi.org/10.1093/oso/9780195073591.003.0005.

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In order to manipulate and animate a human figure with computer graphics, a suitable figure must be modeled. This entails constructing a satisfactory surface skin for the overall human body shape, defining a skeletal structure which admits proper joint motions, adding clothing to improve the verisimilitude of analyses (as well as providing an appropriate measure of modesty), sizing body dimensions according to some target individual or population, and providing visualization tools to show physically-relevant body attributes such as torque loads and strength. In computer graphics, the designer gets a wide choice of representations for the surfaces or volumes of objects. We will briefly review current geometric modeling schemes with an emphasis on their relevance to human figures. We classify geometric models into two broad categories: boundary schemes and volumetric schemes. In a boundary representation the surface of the object is approximated by or partitioned into (non-overlapping) 0-, 1-, or 2- dimensional primitives. We will examine in turn those representations relevant to human modeling: points and lines, polygons, and curved surface patches. In a volumetric representation the 3D volume of the object is decomposed into (possibly overlapping) primitive volumes. Under volumetric schemes we discuss voxels, constructive solid geometry, ellipsoids, cylinders, spheres, and potential functions. The simplest surface model is just a collection of 3D points or lines. Surfaces represented by points require a fairly dense distribution of points for accurate modeling. Clouds of points with depth shading were used until the early 1980’s for human models on vector graphics displays. They took advantage of the display’s speed and hierarchical transformations to produce the perceptual depth effect triggered by moving points [Joh76] (for example, [GM86]). A related technique to retain display speed while offering more shape information is to use parallel rings or strips of points. This technique is used in LifeForms™ [Lif91, Cal91]. Artistically positioned “sketch lines” were used in one of the earliest human figure models [Fet82] and subsequently in a Mick Jagger music video, “Hard Woman” from Digital Productions. Polygonal (polyhedral) models are one of the most commonly encountered representations in computer graphics.
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Conference papers on the topic "Torque-speed curve"

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Bolvashenkov, Igor, Jorg Kammermann, Hans-Georg Herzog, Andrey V. Brazhnikov, Vasilii I. Panteleev, Nikolay N. Dovzhenko, and Dalerdzhon A. Sharipov. "Trigonometric Interpretation of the Torque-Speed Curve of an Induction Motor." In 2020 Fifteenth International Conference on Ecological Vehicles and Renewable Energies (EVER). IEEE, 2020. http://dx.doi.org/10.1109/ever48776.2020.9242536.

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Belhadi, M. B., A. Kolli, G. Krebs, and C. Marchand. "Evaluation of torque-speed curve of switched reluctance motor with segmental rotor." In 2012 XXth International Conference on Electrical Machines (ICEM). IEEE, 2012. http://dx.doi.org/10.1109/icelmach.2012.6349873.

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Arabaci, Hayri, and Osman Bilgin. "Effects of rotor faults in squirrel-cage induction motors on the torque-speed curve." In 2010 XIX International Conference on Electrical Machines (ICEM). IEEE, 2010. http://dx.doi.org/10.1109/icelmach.2010.5607925.

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Murali, Ashwin, Arushi Gupta, and U. Madhava Rao. "Towards a novel direct online speed-torque curve plotter for three phase induction motor." In 2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE). IEEE, 2014. http://dx.doi.org/10.1109/isie.2014.6864733.

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Pham, Tan H., and Philippe Wendling. "Current Harmonics Injection Table to Minimize Torque Ripples for Electric Powertrain Interior Permanent Magnet Motor Over Maximum Torque-Speed Curve." In 2019 IEEE Transportation Electrification Conference and Expo (ITEC). IEEE, 2019. http://dx.doi.org/10.1109/itec.2019.8790540.

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McCulloch, M. D. "The measurement and numerical calculation of the torque-speed curve of high temperature superconducting hysteresis motor." In Eighth International Conference on Electrical Machines and Drives. IEE, 1997. http://dx.doi.org/10.1049/cp:19971081.

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Sourkounis, Constantinos. "Dynamical torque-speed-curve adaption to damp load peaks occuring in drive trains of shredding plants." In 2008 13th International Power Electronics and Motion Control Conference (EPE/PEMC 2008). IEEE, 2008. http://dx.doi.org/10.1109/epepemc.2008.4635501.

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Uddin, Md Wasi, Tausif Husain, Yilmaz Sozer, and Iqbal Husain. "Design of a switched reluctance machine for off-road vehicle applications based on torque-speed curve optimization." In 2014 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2014. http://dx.doi.org/10.1109/ecce.2014.6953924.

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Ortega, Arturo, Anup Nambiar, David Ingram, and Danny Sale. "Torque Control of a Laboratory Scale Variable Speed Hydrokinetic Tidal Turbine: CFD Simulation and Validation." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18830.

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Abstract Hydrokinetic tidal turbines are a promising alternative for the generation of clean electrical energy. They are still far behind, with respect to their technological development, in comparison to offshore wind turbines, which are currently in the stage of commercial energy production. Thus, more studies and analyses of the behaviour of tidal devices and their interaction with the surrounding ocean space are required. How this interaction is interrelated to the power production system is also necessary to be further examined. In this paper, the development of a whole system, fully-coupled model of a laboratory-scale hydrokinetic tidal turbine, along with its interactions with the ocean environment and its electrical control system is described. The model was developed in fastFlume (SOWFA, NREL) coupled with an external torque control system. The control system is developed from the optimal torque speed curve based Maximum Power Point Tracking (MPPT) algorithm. The optimal torque speed curve of the turbine used in the model was obtained from experimental work in a test tank. The hydrokinetic tidal turbine and the control system models were implemented independently. They were coupled in order to reach an energy balance between the surrounding flow, the tidal turbine, and the control system. Three flow stream velocities were imposed in the inlet of the model domain, starting the rotor from zero rotational speed. After the optimal rotational speed is attained, the electrical power generated and the loads experienced by the turbine rotor were studied. In the simulations, the tidal device is controlled to keep the optimal power production for any flow stream velocity. The results of the modelling work were compared with experimental measurements taken from 1:15th scaled testing of a fully-instrumented and controllable tidal device at the Flowave Ocean Energy Research Facility, The University of Edinburgh, a combined wave and current test facility. The results show time series of turbine and generator variables like mechanical and electrical torque and power, as well as thrust and the optimal rotational speed for each of the tested cases. The validation shows good agreement between the numerical and experimental results which encourages futures studies using the coupled model, including the turbine working in more complex flow conditions and controlled by more complex control schemes.
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Takagi, Youhei, Yasunori Okano, Masatoshi Miyagawa, and Nobuyuki Katayama. "Combined Numerical and Experimental Study on Drag Torque in a Wet Clutch." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-10006.

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The effect of flow field on drag torque in a wet clutch was examined through a combined numerical and experimental study. Three-dimensional hydrodynamic numerical simulations were carried out, and the drag torque was measured experimentally for a single wet clutch pack. Two-phase flow induced by aeration was visualized in the experiment. In the present drag torque test, the main section was consisted of two parallel circular plates. The plate with the frictional material was rotated. The frictional material was divided into some sections, and radial or circumferential grooves were made on the rotating disk. Automatic Transmission Fluid (ATF) was supplied from the axial center, and ejected into the surrounding open boundary. At low rotation speeds, it was found that the oil flow is of single-phase, and the drag torque is linearly proportional to the rotation speed since the shear stress on the clutch plate increased monotonically. In the single-flow regime, the slope of drag torque curve was controlled with the clearance between the clutch plates. The drag torque reached a peak value at a certain rotation speed, and it decreased gradually after the peak. These observed phenomena were due to the aeration from the inner gap on the disk, and the bubble volume fraction was directly related to the drag torque. The peak of drag torque was controlled by both the flow rate of supplied ATF and the arrangement of grooves on the frictional material. It also was found that the smooth ejection of ATF and the enhancement of aeration led to a reduction in the drag torque.
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