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Università della Svizzera italiana

Large scale simulation of pressure induced phase-field fracture propagation using Utopia

Zulian, Patrick ; Kopaničáková, Alena ; Nestola, Maria Giuseppina Chiara ; Fink, Andreas ; Fadel, Nur Aiman ; VandeVondele, Joost ; Krause, Rolf

In: CCF transactions on high performance computing, 2021, no. 3, p. 407–426

Non-linear phase field models are increasingly used for the simulation of fracture propagation problems. The numerical simulation of fracture networks of realistic size requires the efficient parallel solution of large coupled non-linear systems. Although in principle efficient iterative multi-level methods for these types of problems are available, they are not widely used in practice due to...

Università della Svizzera italiana

An experimental comparison of a space-time multigrid method with PFASST for a reaction-diffusion problem

Benedusi, Pietro ; Minion, Michael L. ; Krause, Rolf

In: Computers and mathematics with applications, 2021, vol. 99, p. 162-170

We consider two parallel-in-time approaches applied to a (reaction) diffusion problem, possibly non-linear. In particular, we consider PFASST (Parallel Full Approximation Scheme in Space and Time) and space-time multigrid strategies. For both approaches, we start from an integral formulation of the continuous time dependent problem. Then, a collocation form for PFASST and a discontinuous ...

Consortium of Swiss Academic Libraries

Comparison of experimental and theoretical results for the structure and elastic properties of moganite

Grimmer, Hans ; Delley, Bernard

In: Zeitschrift für Kristallographie - Crystalline Materials, 2017, vol. 232, no. 4, p. 279-286

Consortium of Swiss Academic Libraries

Laser fabrication of diamond micro-cutting tool-related geometries using a high-numerical aperture micro-scanning system

Eberle, Gregory ; Dold, Claus ; Wegener, Konrad

In: The International Journal of Advanced Manufacturing Technology, 2015, vol. 81, no. 5-8, p. 1117-1125