Comparison of results of experimental research with numerical calculations of a model one-sided seal

• Autorzy: Joachimiak D. , Krzyślak P.

Identyfikatory

DOI

10.1515/aoter-2015-0015

• Języki publikacji: EN

Abstrakty

EN

Paper presents the results of experimental and numerical research of a model segment of a labyrinth seal for a different wear level. The analysis covers the extent of leakage and distribution of static pressure in the seal chambers and the planes upstream and downstream of the segment. The measurement data have been compared with the results of numerical calculations obtained using commercial software. Based on the flow conditions occurring in the area subjected to calculations, the size of the mesh defined by parameter y⁺ has been analyzed and the selection of the turbulence model has been described. The numerical calculations were based on the measurable thermodynamic parameters in the seal segments of steam turbines. The work contains a comparison of the mass flow and distribution of static pressure in the seal chambers obtained during the measurement and calculated numerically in a model segment of the seal of different level of wear.

Słowa kluczowe

EN

labyrinth seals; turbomachines; fluid-flow machines

PL

uszczelnienia labiryntowe; maszyny wirnikowe; maszyny przepływowe

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2015
• Tom: Vol. 36, no. 2
• Strony: 61--74
• Opis fizyczny: Bibliogr. 17 poz., fot., rsy., tab., wz.

Twórcy

autor

Joachimiak D.

• Poznan University of technology, Chair of Thermal Engineering, Piotrowo 3, 60-965 Poznań, Poland

autor

Krzyślak P.

• Poznan University of technology, Chair of Thermal Engineering, Piotrowo 3, 60-965 Poznań, Poland

Bibliografia

• [1] GAMAL ELDIN A.M.: Leakage and rotordynamic effects of pocket damper seals and see-through labyrinth seals. PhD thesis, Texas A&M University, 2007.
• [2] JOACHIMIAK D.: The labyrinth seals research with extraction. PhD thesis, Poznan University of Technology, Poznan 2013 (in Polish).
• [3] JOACHIMIAK D., JOACHIMIAK M., KRZYŚLAK P.: The analysis of the calculation process related to labyrinth sealing with extraction. Int. J. Appl. Mech. Eng. 18(2013), 4, 1057–1067.
• [4] JOACHIMIAK D., KRZYŚLAK P.: Comparison of the calculation methods labyrinth seals and determination flow factor on the basis of experimental data. In: Machinery and Equipment Power (S. Łopata, Ed.) Proc. 3rd Tech. Sci. Conf., Cracow 2013, 105–114 (in Polish).
• [5] JOACHIMIAK D., KRZYŚLAK P.: Calculation of labyrinth seals with extraction. Int. J. Appl. Mech. Eng. 16(2011), 1, 5–14.
• [6] JOACHIMIAK D., JOACHIMIAK M., KRZYŚLAK P.: Description program Dławnica used for calculations labyrinth seals. J. Mech. Transport Eng. 65(2013), 1, 25–35 (in Polish).
• [7] JOACHIMIAK D., KRZYŚLAK P.: Comparsion of one dimensional carculations models for compresible and incompresible flow by labirynth seals. J. Mech. Transport Eng. 64(2011), 51–67 (in Polish).
• [8] KRZYŚLAK P., WINOWIECKI M.: A method of diagnosing labyrinth seals in fluidflow machines. Pol. Marit. Res. 15(2008), 3(57), 38–41.
• [9] KRZYŚLAK P., WINOWIECKI M.: RP Patent Office: P-379431 – acknowledgement of patent submission. Flow seal in a fluid-flow machine and method of its diagnostics. Warsaw 2006 (in Polish).
• [10] KUCZKOWSKI M.: Numerical simulation of a turbulent flow through the strongly curved duct witch different RANS turbulence model. Turbomachinery 131(2007), 51–60.
• [11] MORRISON G., AL-GHASEM A.: Experimental and computational analysis of a gas compressor windback seal. Proc. Asme Turbo Expo 2007, Vol. 4, Pt. B, 1231–1247.
• [12] TIPTON D. L., SCOTT T. E., VOGEL T. E.: Analytical and experimental development of a design model for labyrinth seals. Air force wright aeronautical laboratories, Allison Gas Turbine-Division of General Motors Corporation, 1985.
• [13] VAKILI D., MEGANATHAN A.: An Experimental and Numerical Study of Labyrinth Seal Flow. Proc. Asme Turbo Expo 2005, Vol. 3, Pt. B, 1121–1128.
• [14] WINOWIECKI M.: The method of diagnosing labyrinth seals on machines. PhD thesis, Poznan University of Technology, Poznań 2009 (in Polish).
• [15] WITTIG S., SCHELLING, U., KIM, S., JACOBSEN, K.: Numerical predictions and measurements of discharge coefficients in labyrinth seals. ASME Gas Turbine Conference, Anaheim, California 1987, 1–7.
• [16] ZIMMERMAN H., WOLFF K.H.: Comparison between empirical and numerical labyrinth flow correlations. ASME Gas Turbine Conference, Anaheim, California 1987, 1–6.
• [17] ANSYS Academic Research, Release 14, Help System. ANSYS, Inc.