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Home » Research » Publications

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Massively parallel multiphase field simulations

M. Tegeler

PhD thesis, (2017)

Download: BibTEX

The multiphase field method is a commonly used tool to simulate the evolution of microstructure during materials processing. Even when using a concept called active parameter tracking, which substantially reduces the computational complexity, the resource demands of the multiphase field method remain significant in both time and memory. A hybrid-parallelization is presented and two different load-balancing schemes are described and compared. Results are presented for performance benchmarks as well as for a variety of applications, including grain growth in polycrystalline materials with hundreds of thousands of different phase fields and Mg-Al alloy solidification. In addition a way of utilizing the multiphase field method is shown that allows the construction of microstructures with a given grain size distribution.

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