Calculation of Three-Dimensional Viscous Flow in Hydrodynamic Torque Converters

Schulz, Hartmut; Greim, R.; Volgmann, W.

doi:10.1115/1.2836705

Cited by 19 publications

(5 citation statements)

References 15 publications

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“…Jung et al [6] compared different 3D numerical methods used to describe the flow within the HTC working fluid, such as: the frozen rotor, the sliding mesh method and the mixing plane methods, and subsequently they verify the results of calculations during bench tests. Similar reflections can be found in publications [7,8]. The study [9] shows an evaluation of the possibilities to use an a typical working fluid (a mixture of oil and air) within a partially filled HC, on the basis of numerical 3D calculations and experimental research.…”

Section: Literature Reviewsupporting

confidence: 59%

Experimental Research Concerning Hydrodynamic Clutches Controlled by Increasing Distance Between Rotors

Iwanicki¹,

Musiałek²,

Osowski³

et al. 2021

Adv. Sci. Technol. Res. J.

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The article describes the results of experimental research concerning a prototypical hydrodynamic clutch controlled via changes in flow rates of the working fluid. The aim of the research was to collect experimental data to confirm the practical possibility of using such a control method of the hydrodynamic clutch and to compare this with other currently used methods. A change in flow rate of the working fluid was obtained by increasing the distance between rotors. The experimental research was conducted on a test rig built specifically for this purpose. On the basis of the research, the influence of the clutch filling level, the direction of rotation and the temperature of the working fluid on the clutch torque were determined. The experimental research shows that the transferred torque is significantly influenced by the width of the gap between rotors, the rotational speed of the input shaft, the clutch filling degree and the temperature of the working fluid. Thus, these values may be used to control the torque transferred by the hydrodynamic clutch. The temperature of the working fluid is not recommended as a control value due to the fact that it is dependent on the working conditions of the hydrodynamic clutch. On the basis of the test results, it was proven that hydrodynamic clutches controlled by increasing the distance between rotors can be successfully used, for example, in drive systems of wind farms.

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Section: Literature Reviewsupporting

confidence: 59%

Experimental Research Concerning Hydrodynamic Clutches Controlled by Increasing Distance Between Rotors

Iwanicki¹,

Musiałek²,

Osowski³

et al. 2021

Adv. Sci. Technol. Res. J.

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show abstract

“…We even failed in precalculating a model using this procedure because the knowlegde of the losses was not accurate enough. So other people at the research center in Bochum started with computational methods in fluid mechanics [9,15,20,32], others with measuring flow [4,5,31] to verify the numerical studies. The flow channel has been discretised by finite volumes as shown in Figure 20.…”

Section: Physical Modelling Of the Torque Converter And The Couplingmentioning

confidence: 99%

Modelling of Technical Systems: Application to Hydrodynamic Torque Converters and Couplings

Behrens¹,

Jaschke²,

Steinhausen³

et al. 2000

Mathematical and Computer Modelling of Dynamical Systems

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First a short survey of modelling of technical systems is presented. The different methods of modelling are applied to hydrodynamic torque converters and couplings. The results of linear modelling around an operating point, of nonlinear modelling for larger operating areas and of hybrid modelling using simplified physical laws are illustrated. Simulations for large excitations show the validity of the models. The advantages and disadvantages of the different methods are discussed.

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“…Numerical methods are used for calculations in this model, for example, ‘Finite Volume Method’ (Kubo et al, 1994). The 3D models are created based on advanced computational fluid dynamics (CFD) method (De la Fuente et al, 2011; Kunisakia et al, 2001; Schulz et al, 1996; Shang et al, 2008). An analysis of literature concerning modelling of hydrodynamic units’ characteristics shows that increasing the complexity level of the model does not result in a significant decrease in modelling errors.…”

Section: Introductionmentioning

confidence: 99%

Modelling and testing of a hydrodynamic clutch filled with electrorheological fluid in varying degree

Olszak

Osowski

Kęsy

et al. 2019

Journal of Intelligent Material Systems and Structures

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The article concerns steady-state characteristics of a hydrodynamic clutch with electrorheological working fluid controlled by changes in strength of electric field and changes in the filling degree. The characteristics were obtained by experimenting, as well as calculations based on one-dimensional mathematical models. While creating the mathematical models, factors taken into consideration included differences between methods controlling the clutch, as well as various ways the working fluid flows in the clutch’s working space, depending on the relation of angular speed of rotors. The resultant mathematical models were verified with experimental research.

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Calculation of Three-Dimensional Viscous Flow in Hydrodynamic Torque Converters

Cited by 19 publications

References 15 publications

Experimental Research Concerning Hydrodynamic Clutches Controlled by Increasing Distance Between Rotors

Experimental Research Concerning Hydrodynamic Clutches Controlled by Increasing Distance Between Rotors

Modelling of Technical Systems: Application to Hydrodynamic Torque Converters and Couplings

Modelling and testing of a hydrodynamic clutch filled with electrorheological fluid in varying degree

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