Special Issue "Secondary Air Systems in Gas Turbine Engines"
A special issue of Aerospace (ISSN 2226-4310).
Deadline for manuscript submissions: closed (31 January 2019) | Viewed by 30835
2. TUSAS Engine Industries (TEI), Eskisehir, Turkey
Interests: aerothermal analysis; turbomachinery; modeling and simulation; ground testing; measurement techniques; propulsion
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Modern gas turbine engines are presently being pushed to the limits of thermal efficiency, owing to recent advancements in materials and cooling technologies. The hot section of a gas turbine engine works above the limits of material capabilities. Consequently, there is a high demand for cooling and sealing to assure safe and sound operation throughout the operational envelope of an engine. Secondary Air Systems (SAS) play a significant role in gas turbine engines to accomplish reliable operation of the individual modules as well as the whole engine. Main functions of SAS are to provide cooling flow to engine components, to seal bearing chambers (sumps) and to control bearing axial loads. Being a functional discipline, SAS owns the airflow that is essentially not the primary flowpath.
Traditionally, the design of secondary air systems utilized industrial friendly “one-dimensional modeling” for both compressible internal rotating/non-rotating fluid flow and heat transfer. Many correlations were developed to model/compute the flows with reasonable accuracy, taking into account of heat pickups on the way in flow circuits. Testing is an integral part of the design process comprising of flow testing of components, module testing and whole engine testing; providing essential data to characterize specific flow elements and circuits.
This collection invites papers that address the areas of SAS in gas turbine engines encompassing aviation, power generation and industrial applications. Of interest are papers that address novel approaches in flow network modeling, contemporary modeling and experimental efforts in rotor-stator/ rotor-rotor cavities, windage measurements and predictions, advanced flow network modeling to include transient behaviors, advanced sealing technologies, axial load control strategies, rim sealing developments and sump pressurization aspects.
Dr. Erinc Erdem
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- Gas turbine engines
- Secondary air systems
- Gas turbine sealing technologies
- One-dimensional flow network modeling
- Rotor-stator/rotor-rotor cavities
- Compressible internal flows
- Heat transfer Gas turbine engine testing