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Keywords: leakage
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Proceedings Papers

Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A021, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102971
... of rotor speed, supply pressure and wear on brush seals performance. In the second part of this work, the results obtained for air are compared to data from the literature, using the equivalent effective clearance. Then, another approach is used for estimating the leakage rate of brush seals by considering...
Proceedings Papers

Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT22A024, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83504
... results. Keywords: hole-pattern seal, oil/air mixtures, wet-gas compression, rotordynamic coefficients, leakage NOMENCLATURE C direct damping [FT/L] c cross-coupled damping [FT/L] Ceff effective damping [FT/L] Hd hole-depth [L] K direct stiffness [F/L] k cross-coupled stiffness [F/L] Keff effective...
Proceedings Papers

Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT22A023, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83499
...Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-83499 LEAKAGE AND ROTORDYNAMIC PERFORMANCE OF A HOLE-PATTERN MULTIPHASE PUMP SEAL Min Zhang1, Dara W. Childs2 1Linde, Inc., Tonawanda, NY 2Texas A&M...
Topics: Leakage, Pumps
Proceedings Papers

Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT22A020, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83164
... increasing for higher frequencies. For the three PRs, the FPDS leakage is roughly up to 26% larger than the HCS leakage, while the 20blade LS leaks in between both. The comparison of results shows the LS has insignificant forces compared to those from the HCS and FPDS, both producing a comparable Ceff...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A021, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60106
...% but barely changes the test seal’s rotordynamic coefficients; i.e., the increased tooth clearance would not change the pump vibration performance. labyrinth seal tooth clearance oil-air mixtures multiphase pump rotordynamic coefficients leakage Proceedings of ASME Turbo Expo 2021...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A022, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60108
... different flow Subscripts X, and Y directions of the coordinate system conditions. X, Y gas component g liquid component Keywords: smooth seal, multiphase pump, flow regime, l rotordynamic coefficients, leakage Acronyms gas volume fraction NOMENCLATURE GVF C direct damping [FT/L] c cross-coupled damping [FT...
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A001, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14118
... smooth seal two-phase flow mainly gas rotordynamic coefficients leakage Abstract Recent multiphase-pump developments encountered several rotordynamic issues with smooth balance-piston seals, creating a need to better understand the performance of annular seals under multiphase-flow...
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A007, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14267
... Abstract The labyrinth seal is one of the most popular non-contact annular seals used in centrifugal compressors to improve machine efficiency by reducing the secondary flow leakage. Reducing the radial clearance C r can effectively decrease the seal’s leakage and therefore increase...
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A008, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14268
... to pure-gas conditions. Zhang et al. (2019) conducted a comprehensive experimental study on the performance (leakage and rotordynamic coefficients) of a see-through labyrinth seal under mainly-gas conditions. This paper continues Zhang et al.’s (2019) research and studies the performance of the see...
Proceedings Papers

Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 657-667, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59173
... leakage stiffness damping whirl-frequency ratio diverging taper converging taper computational fluid dynamics optimization The study deals with optimization of leakage and rotordynamic characteristics of liquid annular seals. A nonlinear constrained multi-objective optimization...
Proceedings Papers

Proc. ASME. GT2007, Volume 4: Turbo Expo 2007, Parts A and B, 1169-1177, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27469
... expansion, misalignment, and application, to allow correct fitment of the strip seals. Any increase in leakage raises the cost due to an increase in the cooling air use, which is linked to specific fuel consumption, and it can also alter gas flow paths and performance. The narrow path within the seal...
Proceedings Papers

Proc. ASME. GT2003, Volume 4: Turbo Expo 2003, 661-667, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38984
... Labyrinth seals are used in various kinds of turbo machines to reduce internal leakage flow. The working fluid or, the gas passing through the rotor shaft labyrinth seals, often generates driving force components that may increase the unstable vibration of the rotor. It is important to know...
Proceedings Papers

Proc. ASME. GT2004, Volume 4: Turbo Expo 2004, 441-451, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53935
... Advanced brush and finger seal technologies offer reduced leakage rates over conventional labyrinth seals used in gas turbine engines. To address engine manufactures’ concerns about the heat generation and power loss from these contacting seals, brush, finger, and labyrinth seals were tested...
Proceedings Papers

Proc. ASME. GT2005, Volume 3: Turbo Expo 2005, Parts A and B, 345-357, June 6–9, 2005
Publisher: American Society of Mechanical Engineers
Paper No: GT2005-68340
... to the turbine stage and reducing the strength of secondary flows within the passage. Reduction in secondary flows leads to less mixing in the endwall region. This allows improved cooling of the endwall and airfoil surfaces with injected and leakage flows. The present paper documents component misalignment...
Proceedings Papers

Proc. ASME. GT2006, Volume 3: Heat Transfer, Parts A and B, 1321-1331, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90185
... Seal Nozzle Guide Vanes (NGVs) Leakage Sealing of components where there is no relative motion between the elements concerned remains a significant challenge in many gas turbine engine applications. Loss of sealing and cooling air from the internal air system through seals impacts...
Proceedings Papers

Proc. ASME. GT2006, Volume 3: Heat Transfer, Parts A and B, 1483-1493, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90690
.... Proceedings of GT2006 ASME Turb Expo 2006: Power for Land, Sea nd Air 1 Copyright © 2006 by ASME ith the test data from seals with unworn honeycomb lands. he leakages for the worn seals were also analyzed. EYWORDS Labyrinth Seal, Unworn and Worn Honeycomb Lands, eakage. OMENCLATURE 3 Measure of pre-wear...
Proceedings Papers

Proc. ASME. GT2006, Volume 5: Marine; Microturbines and Small Turbomachinery; Oil and Gas Applications; Structures and Dynamics, Parts A and B, 1303-1312, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90858
... 23 09 2008 The turbomachinery component of interest in this paper, the pocket damper seal, has the dual purpose of limiting leakage and providing an additional source of damping at the seal location. The rotordynamic coefficients of these seals (primarily the direct stiffness...