Numerical analysis of a tip labyrinth seal of high rotating rotor

• Autorzy: Szymański A. , Dykas S. , Wróblewski W. , Rulik S.
• Konferencja: International Symposium on Compressor & Turbine Flow Systems Theory & Application Areas "SYMKOM" (11 ; 20-23.10.2014 ; Łódź, Polska)
• Języki publikacji: EN

Abstrakty

EN

Labyrinth seal constantly is a prime turbine sealing solution because of low price, low maintenance, minimal rub particulate contamination and high temperature capability. This work aims to perform detailed CFD investigation of high speed rotating labyrinth seal. There have been found an impact of rotational velocity and pressure ratio on discharge characteristics of the rotor. Discharge characteristics were calculated for variety of pressure ratios. Moreover influence of rotor roughness was shown in each case. Performed inquiry results were shown as relative mass flow rate in function of mentioned parameters. From variety of configurations, an optimal seal configuration – providing the lowest leakage can be found.

Słowa kluczowe

EN

labyrinth; sealing; gas turbine; turbomachinery; CFD

PL

labirynt; uszczelnianie; turbina gazowa; maszyna przepływowa; CFD

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
• Rocznik: 2014
• Tom: nr 146
• Strony: 153--163
• Opis fizyczny: Bibliogr. 9 poz., wykr.

Twórcy

autor

Szymański A.

• Silesian University of Technology, Institute of Power Engineering and Turbomachinery, 44-100 Gliwice, Konarskiego 18, Poland

autor

Dykas S.

• Silesian University of Technology, Institute of Power Engineering and Turbomachinery, 44-100 Gliwice, Konarskiego 18, Poland

autor

Wróblewski W.

• Silesian University of Technology, Institute of Power Engineering and Turbomachinery, 44-100 Gliwice, Konarskiego 18, Poland

autor

Rulik S.

• Silesian University of Technology, Institute of Power Engineering and Turbomachinery, 44-100 Gliwice, Konarskiego 18, Poland

Bibliografia

• [1] Wróblewski W., Dykas S., Bochon K., Rulik S., Optimization of tip seal with honeycomb land in lp counter rotating gas turbine engine, Task Quarterly 14 (3), 2010, 189-207
• [2] Paolillo R., Rotating Seal Rig Experiments: Test Results and Analysis Modeling, ASME Turbo Expo 2006: Power for Land, Sea and Air 3, 2006, 1551-1559
• [3] Waschka W., Influence of high rotational speeds on the heat transfer and discharge coefficients in labyrinth seals, ASME Paper 90-GT-330 Journal of Turbomachinery 114, 1992, 462-468
• [4] Childs D. W., Kleynhans G. F. Experimental rotordynamic and leakage results for short (l/d) honeycomb and smooth annular pressure seals. IMechE Proceedings, Fifth international Conference on Vibrations in Rotating Machinery 11, 305-311, 1992
• [5] Al-Qutub A. M., Elrod D., Coleman H. W., A new friction factor model and entrance loss coefficient for honeycomb annular gas seals. ASME J Tribol 200;122, 622-627, 2000
• [6] Waschka W., Zum Einfluss der Rotation auf das Durchflussverhalten und Wärmeübertragungsverhalten in Labyrinthdichtungen und Wellendur-chführungen, Dissertation, Institut für Thermische Strömungsmaschinen der Universität Karlsruhe. 1991
• [7] Matthias A., Willinger R., Influence of rotation and eccentricity on labyrinth seal leakage, 8th European Conference on TURBOMACHINERY, Fluid Dynamics and Thermodynamics, 084, 2009
• [8] Micio M. at el, Flat plate honeycomb seals friction factor analysis, ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, GT2014-27078
• [9] Ansys CFX 14.0 Theory Guide. 2 Turbulence and Wall Function Theory