Gefördert durch die



Veranstaltungsdatum:  26. Januar 2017 16:00 Uhr

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Prof. George Biros
University of Texas at Austin, Institute for Computational Engineering and Sciences


Parallel numerical algorithms for simulations of complex fluids


Complex fluids are challenging to simulate as they are characterized by fluid-structure interaction and the presence of a stationary or evolving microstructure. We will discuss the discretization of integral equation formulations for complex fluids. In particular, we will discuss the challenges and scalability of algorithms for volume integral equations and we will present a new open-source library for such problems. Key algorithmic primitives include tree-data structures (like octrees) and fast summation methods (like the Fast Multipole Method). We will compare their performance to other state-of-the art codes. Representative applications will include blood flow in microcirculation and flow in porous media.

Speaker's Bio:
George Biros is the W. A. ''Tex'' Moncrief Chair in Simulation-Based Engineering Sciences in the Institute for Computational Engineering and Sciences and has Full Professor appointments with the departments of Mechanical Engineering and Computer Science at the University of Texas at Austin.

From 2008 to 2011, he was an Associate Professor in the School of Computational Science and Engineering at Georgia Tech and The Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University. From 2003 to 2008, he was an Assistant professor in Mechanical Engineering and Applied Mechanics at the University of Pennsylvania. He received his BS in Mechanical Engineering from Aristotle University Greece (1995), his MS in Biomedical Engineering from Carnegie Mellon (1996), and his PhD in Computational Science and Engineering also from Carnegie Mellon University (2000). He was a postdoctoral associate at the Courant Institute of Mathematical Sciences from 2000 to 2003. Biros was among a team of researchers that won the IEEE/ACM SC03 and SC10 Gordon Bell Prizes.




Speaker Milena Smiljanic
Institut für Technische Verbrennung (ITV), Subproject A.8

Coarse-graining approach for nanoparticle agglomeration


All-atom simulations of Langevin particles, suspended into a turbulent flow, require excessive computational requirements, due to the large number of particles and multi-scaling nature of the process. Within our project, we aim to bridge this challenges, by replacing parts of agglomerates by coarser "representative" particles of ellipsoidal shape.

Our work on collision-detection for ellipsoids and further dynamic clustering will be reported in detail. Some results on agglomerates' breakage will be also presented.


Veranstaltungsort:  Campus Vaihingen
Seminarraum 1.079
Allmandring 3