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Secondary Air Systems in Gas Turbines

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J: Thermal Management".

Deadline for manuscript submissions: closed (10 September 2021) | Viewed by 2368

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK
Interests: CFD; numerical modelling; turbomachinery; heat transfer; LES; flow control; compressor systems
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK
Interests: modelling of hot-gas ingestion through turbine rim seals; mainstream gas-path aerodynamics and the interaction with the secondary air system; heat transfer in compressor cavities; development of novel shaft sealing technologies; film cooling of turbine blades; cooled radial turbomachinery
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK
Interests: fluid dynamics; gas turbine technologies; internal air systems and seals; thermal imaging techniques
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Guest Editors are inviting submissions to a Special Issue of Energies on the subject area of “Secondary Air Systems in Gas Turbines”. In order to increase the cycle efficiency and specific work output of gas turbines, the turbine entry temperature (TET) is raised beyond the metallurgical limit of the engine components. Consequently, bleed air is taken from the compressor stages and used to cool the turbine. The intricate cooling pathways, seals, and metering devices are collectively known as the secondary air system (SAS). Effective use of the SAS is paramount: superfluous use of bleed air results in an uncompetitive engine design, whereas insufficient or ineffective cooling has a detrimental effect on engine life.

The aim of the present Special Issue is to collate and disseminate the current state-of-the-art in SAS design. Contributions will be sought from the world’s leading research groups in this field.

Dr. Mauro Carnevale
Dr. Carl Sangan
Dr. James Scobie
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Secondary air systems
  • Cavity flows
  • Rotor–stator systems
  • Ingress and Egress
  • Mainstream gas path interactions
  • Shaft sealing technologies
  • Experimental measurement
  • Computational fluid dynamics (CFD)

Related Special Issue

Published Papers (1 paper)

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Research

25 pages, 7062 KiB  
Article
Analysis of Heat Flux Distribution during Brush Seal Rubbing Using CFD with Porous Media Approach
by Manuel Hildebrandt, Corina Schwitzke and Hans-Jörg Bauer
Energies 2021, 14(7), 1888; https://doi.org/10.3390/en14071888 - 29 Mar 2021
Cited by 11 | Viewed by 1923
Abstract
This paper discusses the question of heat flux distribution between bristle package and rotor during a rubbing event. A three-dimensional Computational Fluid Dynamics (3D CFD) model of the brush seal test rig installed at the Institute of Thermal Turbomachinery (ITS) was created. The [...] Read more.
This paper discusses the question of heat flux distribution between bristle package and rotor during a rubbing event. A three-dimensional Computational Fluid Dynamics (3D CFD) model of the brush seal test rig installed at the Institute of Thermal Turbomachinery (ITS) was created. The bristle package is modelled as a porous medium with local non-thermal equilibrium. The model is used to numerically recalculate experimentally conducted rub tests on the ITS test rig. The experimentally determined total frictional power loss serves as an input parameter to the numerical calculation. By means of statistical evaluation methods, the ma in influences on the heat flux distribution and the maximum temperature in the frictional contact are determined. The heat conductivity of the rotor material, the heat transfer coefficients at the bristles and the rubbing surface were identified as the dominant factors. Full article
(This article belongs to the Special Issue Secondary Air Systems in Gas Turbines)
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