Results 11 to 20 of about 4,317 (244)
Sealing Performance of a Turbine Rim Chute Seal Under Rotationally-Induced Ingestion
Journal of Physics: Conference Series, 2021 Abstract This study focuses on the sealing capability of a turbine rim seal subject to hot gas ingestion driven purely by the rotor disc pumping effect rather than that induced by mainstream features such as vane and rotor blade passing. The aim is to provide useful data for conditions in which rotation dominates, and to clarify the flow
Revert, Anna Bru +3 more
core +5 more sources
Numerical Investigation of Unsteady Interaction between Rim Seal Flow and Upstream Vane
Xibei Gongye Daxue Xuebao, 2019 To investigate unsteady interaction mechanism between the rim seal flow in turbine stator-rotor cavity and main flow, detailed unsteady numerical simulations of the flow field and unsteady characteristic of the vane were conducted under different rim ...
doaj +2 more sources
Unsteady Flow Phenomena in Turbine Rim Seals [PDF]
Volume 5A: Heat Transfer, 2016 While turbine rim sealing flows are an important aspect of turbomachinery design, affecting turbine aerodynamic performance and turbine disc temperatures, the present understanding and predictive capability for such flows is limited. The aim of the present study is to clarify the flow physics involved in rim sealing flows and to provide high quality ...
Beard, PF +3 more
core +7 more sources
Computational and Mathematical Modeling of Turbine Rim Seal Ingestion
Journal of Turbomachinery, 2001 Abstract Understanding and modeling of main annulus gas ingestion through turbine rim seals is considered and advanced in this paper. Unsteady three-dimensional computational fluid dynamics (CFD) calculations and results from a more elementary model are presented and compared with experimental data previously published by Hills et al ...
Hills, NJ, Chew, JW, Turner, AB
core +6 more sources
Inertial waves in turbine rim seal flows
Physical Review Fluids, 2020 Rotating fluids are well-known to be susceptible to waves. This has received much attention from the geophysics, oceanographic and atmospheric research communities. Inertial waves, which are driven by restoring forces, for example the Coriolis force, have been detected in the research fields mentioned above. This paper investigates inertial waves in
Feng Gao, John W. Chew, Olaf Marxen
openaire +5 more sources
Numerical Studies of Turbine Rim Sealing Flows on a Chute Seal Configuration [PDF]
European Conference on Turbomachinery Fluid Dynamics and hermodynamics, 2017 This paper presents CFD (computational fluid dynamics) modelling of a chute type rim seal that has been previously experimentally investigated. The study focuses on inherent large-scale unsteadiness rather than that imposed by vanes and blades or external flow. A large-eddy simulation (LES) solver is validated for a pipe flow test case and then applied
Feng Gao +4 more
openaire +3 more sources
Computational and Experimental Assessment of Rim Sealing Flows in Axial Turbine Chute Rim Seals
AIAA Propulsion and Energy 2021 Forum, 2021 Computations were performed with a URANS model and a novel LES code including near wall boundary layer modelling, the wall-modelled LES (WMLES). The experimental data was obtained in the Oxford Rotor Facility (ORF). The main focus of this study was the mean cavity flow aerodynamics and the sealing performance of the chute seal under a range of ...
Palermo, Donato M. +5 more
openaire +3 more sources
Unsteady Numerical Investigation on Vortex Interaction between Rim Seal Purge Flow and Upstream Stator [PDF]
Journal of Applied Fluid Mechanics, 2022 To assess unsteady vortex interaction between rim seal purge flow and upstream stator, numerical investigations were conducted under different purge flow rates.
L. Zhou, Z. X. Wang, F. Yang, J. W. Shi
doaj +1 more source
Case Studies in Thermal Engineering, 2022 In gas turbine and aeroengine, the rim seal is set between the turbine stator and rotor to prevent ingestion of the high-temperature mainstream into the rotating cavity.
Ziqing Zhang +4 more
doaj +1 more source
Energies, 2023 In gas turbines, the hot gas exiting the combustor can have temperatures as high as 2000 °C, and some of this hot gas enter into the space between the stator and rotor disks (wheelspace).
Sabina Nketia +4 more
doaj +1 more source