CFD investigations of turbine rim seal physics
Lead Research Organisation:
University of Surrey
Department Name: Mechanical Engineering Sciences
Abstract
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Organisations
People |
ORCID iD |
| John William Chew (Primary Supervisor) | |
| DONATO MARIA PALERMO (Student) |
Publications
Chew J
(2018)
Flow mechanisms in axial turbine rim sealing
in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Palermo D
(2019)
Effect of Annulus Flow Conditions on Turbine Rim Seal Ingestion
Studentship Projects
| Project Reference | Relationship | Related To | Start | End | Student Name |
|---|---|---|---|---|---|
| EP/N509772/1 | 30/09/2016 | 29/09/2021 | |||
| 2021098 | Studentship | EP/N509772/1 | 31/03/2017 | 29/06/2020 | DONATO MARIA PALERMO |
| Description | Development of the WMLES for turbomachinery applications to quantify ingress in axial turbines with an improved discretisation scheme compared to standard second order scheme. Confirmation and verification of presence of inertial waves within the rim seal in presence of ingress. |
| Exploitation Route | The code developed is currently under investigation by Rolls-Royce plc and it might be used for the design of the next secondary air systems platforms. |
| Sectors | Aerospace Defence and Marine Energy |
| Description | This PhD presents WMLES simulations of a chute type turbine rim seal. Configurations with an axisymmetric annulus flow and with nozzle guide vanes fitted (but without rotor blades) are considered. The passive scalar concentration solution and WMLES are validated against available data in the literature for uniform convection and a rotor-stator cavity flow. The WMLES approach is shown to be effective, giving significant improvements over an eddy viscosity turbulence model, in prediction of rim seal effectiveness compared to research rig measurements. WMLES requires considerably less computational time than wall-resolved LES, and has the potential for extension to engine conditions. All WMLES solutions show rotating inertial waves in the chute seal. Good agreement between WMLES and measurements for sealing effectiveness in the configuration without vanes is found. For cases with vanes fitted the WMLES simulation shows less ingestion than the measurements, and possible reasons are discussed. |
| First Year Of Impact | 2019 |
| Sector | Aerospace, Defence and Marine |
| Impact Types | Cultural Economic |