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Session Details

PL04: Plenary Lectures

Thursday, 12. October 2017; 08:30 - 10:00 Uhr in Raum 7.02
Sitzungsleitung: Manfred Bischoff

08:30
71'573 various challenges – Computational Engineering @ HILTI
Ralph Lohner (Hilti AG)

Kurzfassung:
HILTI is the world market leader in fastening and demolition technology for construction professionals. We offer a highly differentiated product portfolio of over 70'000 different items to our customers in more than 120 countries. Efficient development at HILTI is based on consequent integration of existing and development of progressive simulation methodology. The particular challenge in this is to deal with various physical domains like powder or gas combustion in direct fastening tools, concrete interaction of anchoring products, battery behavior for power tools or the dispensing of high viscous mortars – many of them on the edge or beyond what standard commercial solvers are able to answer. In the lecture some representative examples from industry will be shown to illustrate possible simulation solutions with commercial/ in-house code or adapted open source software packages.


09:15
Computational multiscale methods for turbulent single- and two-phase flows
Ursula Rasthofer

Kurzfassung:
Variational multiscale methods for LES of turbulent single- and two-phase flows are presented. To recover the subgrid-scale velocity, multifractal scale similarity in the enstrophy field of turbulent flow is exploited. The extended finite element method allows for sharply representing discontinuities at the interface of two-phase flow on a fixed grid. Various numerical examples, ranging from turbulent flow past a backward-facing step to turbulent bubbly channel flow, illustrate the methods.