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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.
Original languageEnglish
Title of host publicationThermal Process Modeling
Subtitle of host publicationProceedings from the 5th International Conference on Thermal Process Modeling and Computer Simulation
PublisherASM International
Pages223-231
Number of pages8
ISBN (Print)978-1-62708-068-2
Publication statusPublished - 1 Jun 2014
Externally publishedYes
Event5th International Conference on Thermal Process Modeling and Computer Simulation - Orlando, United States
Duration: 16 Jun 201418 Jun 2014

Conference

Conference5th International Conference on Thermal Process Modeling and Computer Simulation
CountryUnited States
CityOrlando
Period16/06/1418/06/14

ASJC Scopus subject areas

  • Materials Science(all)

Fields of Expertise

  • Advanced Materials Science

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