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 language | English |
|---|---|
| Title of host publication | Thermal Process Modeling |
| Subtitle of host publication | Proceedings from the 5th International Conference on Thermal Process Modeling and Computer Simulation |
| Publisher | ASM International |
| Pages | 223-231 |
| Number of pages | 8 |
| ISBN (Print) | 978-1-62708-068-2 |
| Publication status | Published - 1 Jun 2014 |
| Externally published | Yes |
| Event | 5th International Conference on Thermal Process Modeling and Computer Simulation - Orlando, United States Duration: 16 Jun 2014 → 18 Jun 2014 |
Conference
| Conference | 5th International Conference on Thermal Process Modeling and Computer Simulation |
|---|---|
| Country/Territory | United States |
| City | Orlando |
| Period | 16/06/14 → 18/06/14 |
ASJC Scopus subject areas
- Materials Science(all)
Fields of Expertise
- Advanced Materials Science