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Abstrakty
This paper presents the results of experimental testing of parameters of the flow of an agitated liquid in a stirred tank with an eccentrically positioned shaft and with a Rushton turbine. The investigations were focused on the impact of the stirrer shaft shift in relation to the stirred tank vertical axis on the agitated liquid mean velocities and the liquid turbulent velocity fluctuations, as well as on the turbulence intensity in the tank. All the experiments were carried out in a stirred tank with the inner diameter of 286 mm and a flat bottom. The adopted values of the shaft eccentricity were zero (central position) and half the tank radius. The liquid flow instantaneous velocities were measured using laser Doppler anemometry.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
91--102
Opis fizyczny
Bibliogr. 18 poz., rys., tab., wykr., wz.
Twórcy
autor
- Institute of Thermal and Process Engineering, Cracow University of Technology, al. Jana Pawła II 37, 31-864 Kraków, Poland
autor
- Institute of Thermal and Process Engineering, Cracow University of Technology, al. Jana Pawła II 37, 31-864 Kraków, Poland
Bibliografia
- [1] Sharp K.V., Kim K.C., Adrian R.: Dissipation estimation around a rushton turbine using particle image velocimetry. In: Laser Techniques Applied to Fluid Mechanics. In: Laser Techniques Applied to Fluid Mechanics (R.J. Adrian, D.F.G. Durão, F. Durst, M.V. Heitor, M. Maeda, J.H. Whitelaw, Eds). Springer, Berlin – Heidelberg 2000, 337–354.
- [2] Wu H., Patterson G.K.: Laser-Doppler measurements of turbulent-flow parameters in a stirred mixer. Chem. Eng. Sci. 44(1989), 10, 2207–2221.
- [3] Rao M.A., Brodkey R.S.: Continuous flow stirred tank turbulence parameters in the impeller stream. Chem. Eng. Sci. 27(1972), 137–156.
- [4] Cutter L.A.: Flow and turbulence in a stirred tank. A.I.Ch.E.J. 12(1966), 35–45.
- [5] Okamoto Y., Nishikawa M., Hashimoto K.: Energy dissipation rate distribution in mixing vessels and its effects on liquid-liquid dispersion and solid-liquid mass transfer. Int. Chem. Eng. 21(1981), l, 88–94.
- [6] Talaga J.: Method of determination of the liquid turbulent time macroscale based on the velocity autocorrelation function. Inż. i Aparat. Chem. 5(2005), 66–69 (in Polish).
- [7] Talaga J., Duda A.: Investigation of turbulent macro-and micro scale in agitated vessel on the basis of autocorrelation function. Technical Transactions 4-M(2004), 277–285.
- [8] Krysiński T., Buliński Z., Nowak A.J.: Numerical modeling and preliminary validation of drag-based vertical axis wind turbine. Arch. Thermodyn. 36(2015), 1, 19–38.
- [9] Joachimiak D., Krzyślak P.: Comparison of results of experimental research with numerical calculations of a model one-sided seal. Arch. Thermodyn. 36(2015), 2, 61–74.
- [10] Albrecht H.E., Borys M., Damaschke N., Tropea C.: Laser Doppler and Phase Doppler Measurement, Techniques. Springer Berlin 2003.
- [11] Durst F.: Einführung in die Laser-Doppler-Anemometrie. Kurzlehrgang. Universität Erlangen-Nürnberg, 2001.
- [12] Elsner J.W., Drobniak S.: Flow Turbulence Metrology. Maszyny Przepływowe, Vol. 18, Ossolineum, Wrocław 1995 (in Polish).
- [13] Wójtowicz R., Lipin A.A., Talaga J.: On the possibility of using of different turbulence models for modeling flow hydrodynamics and power consumption in mixing vessels with turbine impellers. Theoret. Found. Chem. Eng. 48(2014), 4, 360–375.
- [14] Rodriguez G., Weheliye W., Anderlei T., Micheletti M. Yianneskis M., Ducci A.: Mixing time and kinetic energy measurements in a shaken cylindrical bioreactor. Chem. Eng. Res. Des. 91(2013), 11, 2084–2097.
- [15] Liu N., Gong J., Wang W., Zhang M., Han J., Tian Y., Wu C.: Effect of local spatial location on chord length distribution in stirred tank. Chem. Eng. Res. Des. 120(2017), 4, 194–207.
- [16] Wójtowicz R., Lipin A.A.: The Computational-Fluid-Dynamics study of an unbaffled stirred vessel with eccentrically positioned impeller. Technical Transactions 1-Ch(2015), 99–108.
- [17] Paul E.L., Atiemo-Obeng W.A., Kresta S.M.: Handbook of Industrial Mixing, Wiley, New Jersey 2004.
- [18] Musik M., Talaga J.: Investigation of fluid dynamics in an unbaffled stirred vessel with an eccentrically located Rushton turbine. Technical Transactions 2-M3 (2016), 191–198.
Typ dokumentu
Bibliografia
Identyfikator YADDA
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