Computationally Efficient FE-Models for Simulating the Forced Air Cooling of Turbine Discs

Andreas Drexler; Hans Peter Gänser; Werner Ecker; Bernd Oberwinkler; Andreas Fischersworring-Bunk

Computationally Efficient FE-Models for Simulating the Forced Air Cooling of Turbine Discs

Andreas Drexler, Hans Peter Gänser, Werner Ecker, Bernd Oberwinkler, Andreas Fischersworring-Bunk

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

Abstract

A big issue in finite element (FE) analysis is the trade-off between computational cost and accuracy. The present contribution is devoted to the FE analysis of the cooling process of turbine disks made from the nickel-base alloy 718 after forging. A fully three-dimensional thermal model is compared to an axisymmetric simulation. A sensitivity study with respect to the influence of boundary conditions is performed; in particular, reflection and back radiation from the housing of the cooling track and neighboring disks, thermal contact to the conveyor chain transporting the disks through the cooling track, and convective heat transfer at the disk surface. The influence of air speed on the convective heat transfer is estimated by computational fluid dynamics. In conclusion, some guidelines for obtaining a computationally efficient, yet sufficiently accurate FE model for the cooling process are given.

Originalsprache	englisch
Titel	Thermal Process Modeling
Untertitel	Proceedings from the 5th International Conference on Thermal Process Modeling and Computer Simulation
Herausgeber (Verlag)	ASM International
Seiten	223-231
Seitenumfang	8
ISBN (Print)	978-1-62708-068-2
Publikationsstatus	Veröffentlicht - 1 Juni 2014
Extern publiziert	Ja
Veranstaltung	5th International Conference on Thermal Process Modeling and Computer Simulation - Orlando, USA / Vereinigte Staaten Dauer: 16 Juni 2014 → 18 Juni 2014

Konferenz

Konferenz	5th International Conference on Thermal Process Modeling and Computer Simulation
Land/Gebiet	USA / Vereinigte Staaten
Ort	Orlando
Zeitraum	16/06/14 → 18/06/14

ASJC Scopus subject areas

Werkstoffwissenschaften (insg.)

Fields of Expertise

Advanced Materials Science

Andere Dateien und Links

https://asm.confex.com/asm/ht2014/webprogram/Paper37246.html

Dieses zitieren

Computationally Efficient FE-Models for Simulating the Forced Air Cooling of Turbine Discs. / Drexler, Andreas; Gänser, Hans Peter; Ecker, Werner et al.

Thermal Process Modeling: Proceedings from the 5th International Conference on Thermal Process Modeling and Computer Simulation. ASM International, 2014. S. 223-231.

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

Drexler, A, Gänser, HP, Ecker, W, Oberwinkler, B & Fischersworring-Bunk, A 2014, Computationally Efficient FE-Models for Simulating the Forced Air Cooling of Turbine Discs. in Thermal Process Modeling: Proceedings from the 5th International Conference on Thermal Process Modeling and Computer Simulation. ASM International, S. 223-231, 5th International Conference on Thermal Process Modeling and Computer Simulation, Orlando, Florida, USA / Vereinigte Staaten, 16/06/14.

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title = "Computationally Efficient FE-Models for Simulating the Forced Air Cooling of Turbine Discs",

abstract = "A big issue in finite element (FE) analysis is the trade-off between computational cost and accuracy. The present contribution is devoted to the FE analysis of the cooling process of turbine disks made from the nickel-base alloy 718 after forging. A fully three-dimensional thermal model is compared to an axisymmetric simulation. A sensitivity study with respect to the influence of boundary conditions is performed; in particular, reflection and back radiation from the housing of the cooling track and neighboring disks, thermal contact to the conveyor chain transporting the disks through the cooling track, and convective heat transfer at the disk surface. The influence of air speed on the convective heat transfer is estimated by computational fluid dynamics. In conclusion, some guidelines for obtaining a computationally efficient, yet sufficiently accurate FE model for the cooling process are given.",

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T1 - Computationally Efficient FE-Models for Simulating the Forced Air Cooling of Turbine Discs

AU - Drexler, Andreas

AU - Gänser, Hans Peter

AU - Ecker, Werner

AU - Oberwinkler, Bernd

AU - Fischersworring-Bunk, Andreas

PY - 2014/6/1

Y1 - 2014/6/1

N2 - A big issue in finite element (FE) analysis is the trade-off between computational cost and accuracy. The present contribution is devoted to the FE analysis of the cooling process of turbine disks made from the nickel-base alloy 718 after forging. A fully three-dimensional thermal model is compared to an axisymmetric simulation. A sensitivity study with respect to the influence of boundary conditions is performed; in particular, reflection and back radiation from the housing of the cooling track and neighboring disks, thermal contact to the conveyor chain transporting the disks through the cooling track, and convective heat transfer at the disk surface. The influence of air speed on the convective heat transfer is estimated by computational fluid dynamics. In conclusion, some guidelines for obtaining a computationally efficient, yet sufficiently accurate FE model for the cooling process are given.

AB - A big issue in finite element (FE) analysis is the trade-off between computational cost and accuracy. The present contribution is devoted to the FE analysis of the cooling process of turbine disks made from the nickel-base alloy 718 after forging. A fully three-dimensional thermal model is compared to an axisymmetric simulation. A sensitivity study with respect to the influence of boundary conditions is performed; in particular, reflection and back radiation from the housing of the cooling track and neighboring disks, thermal contact to the conveyor chain transporting the disks through the cooling track, and convective heat transfer at the disk surface. The influence of air speed on the convective heat transfer is estimated by computational fluid dynamics. In conclusion, some guidelines for obtaining a computationally efficient, yet sufficiently accurate FE model for the cooling process are given.

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M3 - Conference paper

SN - 978-1-62708-068-2

SP - 223

EP - 231

BT - Thermal Process Modeling

PB - ASM International

T2 - 5th International Conference on Thermal Process Modeling and Computer Simulation

Y2 - 16 June 2014 through 18 June 2014

ER -

Computationally Efficient FE-Models for Simulating the Forced Air Cooling of Turbine Discs

Abstract

Konferenz

ASJC Scopus subject areas

Fields of Expertise

Andere Dateien und Links

Fingerprint

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