Details

Autor(en) / Beteiligte

• Richardson, Chris N.
• Sime, Nathan
• Wells, Garth N.

Titel

Scalable computation of thermomechanical turbomachinery problems

Ist Teil von

• Finite elements in analysis and design, 2019-03, Vol.155, p.32-42

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A commonly held view in the turbomachinery community is that finite element methods are not well-suited for very large-scale thermomechanical simulations. We seek to dispel this notion by presenting performance data for a collection of realistic, large-scale thermomechanical simulations. We describe the necessary technology to compute problems with O(107) to O(109) degrees-of-freedom, and emphasise what is required to achieve near linear computational complexity with good parallel scaling. Performance data is presented for turbomachinery components with up to 3.3 billion degrees-of-freedom. The software libraries used to perform the simulations are freely available under open source licenses. The performance demonstrated in this work opens up the possibility of system-level thermomechanical modelling, and lays the foundation for further research into high-performance formulations for even larger problems and for other physical processes, such as contact, that are important in turbomachinery analysis. •Demonstrates that complex turbomachinery thermomechanical problems can be solved scalably.•Provides a key ingredient for the push towards systems level, whole engine simulations.•Explains via complexity analysis why efforts to improve direct solvers cannot succeed.•Explains the necessary mathematical properties for a finite element solver for thermomechanical problems to be scalable, which will help practitioners.•Provides proof and concept and viability of extreme scale simulation which will justify new research into specific topics.