Numerical simulation of the two-phase flows in a hydraulic coupling by solving VOF model

Luo, Yongyao; Zuo, Zhigang; Liu, S H; Fan, Honggang; Zhuge, Weilin

doi:10.1088/1757-899x/52/7/072022

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…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. Schweitzer and Gandham [10] conducted an analysis of a working fluid flow within the HTC using CFD methods, and the results of the numerical calculations are verified on a test station using laser Doppler velocimetry LDV.…”

Section: Literature Reviewsupporting

confidence: 65%

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: 65%

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

“…Different mathematical models are used to model hydrodynamic components: one-dimensional models (1D) [28][29][30], two-dimensional models (2D) [31,19] and three-dimensional models (3D) [32][33][34][35]. 1D mathematical models are most commonly used models, due to their simplicity, the capability to easily formulate dynamic equations describing transient motion of the hydrodynamic drive system and the possibility to use them in initial stages of theoretical research.…”

Section: Introductionmentioning

confidence: 99%

Modelling of Drive System Operation of a Wind Power Plant

Osowski¹,

Iwanicki²,

Kotliński³

et al. 2023

Adv. Sci. Technol. Res. J.

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The article presents experimental and theoretical studies concerning the possibility of using a controlled hydrodynamic clutch in a wind power plant's drive system. The hydrodynamic clutch is controlled by changing the distance between the hydrodynamic clutch rotors. The control system is supposed to maintain a constant angular velocity of the electric generator shaft. The considered method of control has not been used so far in power plant's drive systems. The advantages of using a controlled hydrodynamic clutch is simple structure, high durability and low weight of the entire drive system. The equations of the mathematical model for the drive system are formulated on the basis of: the balance of torques and the equations of the hydrodynamic clutch with retractable rotors. The equations are based on the onedimensional flow of the working fluid along the mean line of the stream. The model calculations are conducted numerically. In order to be able to determine the coefficients of the mathematical model, experimental research is conducted on a test bench designed specifically for this purpose. The research determines how the rotation direction and size of the gap between rotors influences the torque transferred by the hydrodynamic clutch, for selected values of the clutch's filling degree and the working fluid's temperature. On the basis of the model calculations results it was determined that a hydrodynamic clutch controlled by increasing the distance between rotors may be successfully used in drive systems of wind power plants to maintain a constant angular velocity of the electric generator shaft.

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“…Luo et al employed SIMPLEC algorithm and SST -turbulence model to simulate the steady state flows [7]. They also used PISO algorithm and RNG -turbulence model to calculate the gas-liquid two-phase flows in fluid coupling [8]. Hur et al applied the realizable -turbulence model together with the VOF method to investigate two-phase flow of water fluid coupling [9].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Fluid Flow and Performance Prediction in a Fluid Coupling Using Large Eddy Simulation

Cai

et al. 2017

International Journal of Rotating Machinery

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Large eddy simulation (LES) with various subgrid-scale (SGS) models was introduced to numerically calculate the transient flow of the hydraulic coupling. By using LES, the study aimed to advance description ability of internal flow and performance prediction. The CFD results were verified by experimental data. For the purpose of the description of the flow field, six subgrid-scale models for LES were employed to depict the flow field; the distribution structure of flow field was legible. Moreover, the flow mechanism was analyzed using 3D vortex structures, and those showed that DSL and KET captured abundant vortex structures and provided a relatively moderate eddy viscosity in the chamber. The predicted values of the braking torque for hydraulic coupling were compared with experimental data. The comparison results were compared with several simulation models, such as SAS and RKE, and SSTKW models. Those comparison results showed that the SGS models, especially DSL and KET, were applicable to obtain the more accurate predicted results than SAS and RKE, and SSTKW models. Clearly, the predicted results of LES with DSL and KET were far more accurate than the previous studies. The performance prediction was significantly improved.

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Numerical simulation of the two-phase flows in a hydraulic coupling by solving VOF model

Cited by 3 publications

References 5 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 Drive System Operation of a Wind Power Plant

Numerical Investigation of Fluid Flow and Performance Prediction in a Fluid Coupling Using Large Eddy Simulation

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