Skip to content
BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access September 25, 2015

Experimental and numerical study on condensation in transonic steam flow

Mirosław Majkut, Sławomir Dykas, Michał Strozik and Krystian Smołka
From the journal Open Engineering

Abstract

The present paper describes an experimental and numerical study of steam condensing flow in a linear cascade of turbine stator blades. The experimental research was performed on the facility of a small scale steam power plant located at Silesian University of Technology in Gliwice, Poland. The test rig of the facility allows us to perform the tests of steam transonic flows for the conditions corresponding to these which prevail in the low-pressure (LP) condensing steam turbine stages. The experimental data of steam condensing flow through the blade-to- blade stator channel were compared with numerical results obtained using the in-house CFD numerical code TraCoFlow. Obtained results confirmed a good quality of the performed experiment and numerical calculations.

References

[1] Krol T., Results of Optical Measurement of Diameters of Drops Formed due to Condensation of Steam in a Laval Nozzle. Trans. Inst. Fluid Flow Machinery (Poland), 1971, 57, 19-30.Search in Google Scholar

[2] Moses C.A., Stein G.D., On the growth of steam droplets formed in a Laval nozzle using both static pressure and light scattering measurements. ASME, 1978, 100, 311-322.10.1115/1.3448672Search in Google Scholar

[3] White A.J., Young J.B., Walters P.T. Experimental Validation of Condensing Flow Theory for a Stationary Cascade of Steam Turbine Blade. Philos. Trans. R. Soc. Lond. A, 1996, 354, 59-88.10.1098/rsta.1996.0003Search in Google Scholar

[4] Bakhtar F., White A.J., Mashmoushy H., Theoretical treatments of two-dimensional two-phase flows of steam and comparison with cascade measurements. Proc. Inst. Mech. Eng. C J. Mech. Eng. Sci., 2005, 219(C12), 1335-1355.10.1243/095440605X31454Search in Google Scholar

[5] Bakhtar F., Zamri M.Y., On the performance of a cascade of improved turbine nozzle blades in nucleating steam - Part 3: Theoretical analysis, Proc. Inst. Mech. Eng. C J. Mech. Eng. Sci., 2011, 225, 1649-1671.10.1177/0954406211400346Search in Google Scholar

[6] Halama J., Fort J., Seifert M., Numerical solution of wet steam flow with a priori droplet size distribution, Proceedings of Conference on Topical Problems of Fluid Mechanics, Prague, 2010, 63-66.Search in Google Scholar

[7] Schnerr G.H., Homogene Kondensation in stationaeren transsonischen Stroemungen durch Lavalduesen und um Profile, Habilitationsschrift, Fakultät für Maschinenbau, Universität Karlsruhe, 1986.Search in Google Scholar

[8] Young J.B., Spontaneous condensation of steam in supersonic nozzles. Physicochem. Hydrodyn., 1982, 3, 57-82.Search in Google Scholar

[9] Frenkel J., Kinetic Theory of Liquids., Oxford University Press, New York, 1946.Search in Google Scholar

[10] Gyarmathy G., Grundlagen einer Theorie der Nassdampfturbine, Dissertation, Juris Verlag, Zürich, 1960.Search in Google Scholar

[11] Dykas S., Wróblewski W., Łukowicz H., Prediction of losses in the flow through the last stage of low-pressure steam turbine, Int. J. Numer. Meth. Fluids., 2007, 53(6), 933-945.10.1002/fld.1313Search in Google Scholar

[12] Dykas S., Wróblewski W., Two-fluid model for prediction of wet steam transonic flow, Int. J. Heat.Mass. Tran., 2013, 60, 88-94.10.1016/j.ijheatmasstransfer.2012.12.024Search in Google Scholar

[13] Smołka K., Strozik M., Majkut M., Dykas S., Mozliwosci badan eksperymentalnych przepływu pary mokrej w układzie minisiłowni kondensacyjnej, Prace Naukowe. Konferencje, z. 27,O_- cyna Wydawnicza Politechniki Warszawskiej, 2011, 233-240.Search in Google Scholar

[14] Wróblewski W., Dykas S., Gepert A., Steam Condensing Flow in Turbine Channels, Int. J.Multiphas. Flow, 2009, 35(6), 498-506.10.1016/j.ijmultiphaseflow.2009.02.020Search in Google Scholar

[15] Dykas S., Majkut M., Smołka K., Strozik M., Experimental research on wet steam flow with shock wave, Exp. Heat Transfer, 2015, 28(5), 417-429.10.1080/08916152.2014.913090Search in Google Scholar

[16] Doerffer P., Dykas S., Numerical analysis of shock induced separation delay by air humidity, Int. J. Therm. Sci., 2005, 14(2), 120-125.10.1007/s11630-005-0021-3Search in Google Scholar

Received: 2015-1-7
Accepted: 2015-5-20
Published Online: 2015-9-25

© 2015

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Scroll Up Arrow