This image shows Alexander Straub

Alexander Straub

M. Sc.

Doctoral Researcher
Visualization Research Center (VISUS)
Ertl Group


Allmandring 19
70569 Stuttgart
Room: 00.005


IRTG 2160: Droplet Interaction Technologies (DROPIT)
Subproject C4 – Visualisation of droplet-liquid interaction

The project's goal is to research theoretically, experimentally and numerically the interaction of droplets. To this end, this subproject aims at visualising the results obtained from direct numerical simulations of multiphase flow. This includes the visual analysis of droplet-local flow, as well as research of droplet interface related phenomena, which especially occur following interactions between different droplets, e.g., after collisions.

SFB 1313: Interface-Driven Multi-Field Processes in Porous Media – Flow, Transport and Deformation
Subproject D01 – Visualization of multi-field processes in porous media

The long-term goal of this project is to develop new visualization techniques to support the projects of the SFB in understanding flow, transport and deformation phenomena occurring at interfaces in and around porous media. This requires the integrated visual analysis of processes captured across multiple fields to relate different quantities, analyse simulation ensembles, and compare simulations against experiments. The interactive exploration of large and heterogeneous volumes of data is achieved by efficiently using parallel architectures as well as in-situ data aggregation.

  1. 2021

    1. Schatz, K. ; Müller, C. ; Gralka, P. ; Heinemann, M. ; Straub, A. ; Schulz, C. ; Braun, M. ; Rau, T. ; Becher, M. ; Frey, S. ; Reina, G. ; Sedlmair, M. ; Weiskopf, D. ; Ertl, T. ; Diehl, P. ; Marcello, D. ; Frank, J. ; Müller, T.: 2019 IEEE Scientific Visualization Contest Winner: Visual Analysis of Structure Formation in Cosmic Evolution. In: IEEE Computer Graphics and Applications (CG&A), IEEE Computer Graphics and Applications (CG&A). Bd. 41 (2021), Nr. 06, S. 101–110
    2. Heinemann, Moritz ; Frey, Steffen ; Tkachev, Gleb ; Straub, Alexander ; Sadlo, Filip ; Ertl, Thomas: Visual analysis of droplet dynamics in large-scale multiphase spray simulations. In: Journal of Visualization, Journal of Visualization. Bd. 24 (2021), Nr. 5, S. 943--961
    3. Straub, Alexander ; Karch, Grzegorz K. ; Sadlo, Filip ; Ertl, Thomas: Implicit Visualization of 2D Vector Field Topology for Periodic Orbit Detection. In: Topological Methods in Data Analysis and Visualization VI : Springer International Publishing, 2021 — ISBN 978-3-030-83500-2, S. 159–180
  2. 2020

    1. Straub, Alexander ; Ertl, Thomas: Visualization Techniques for Droplet Interfaces and Multiphase Flow. In: Droplet Interactions and Spray Processes. Bd. 121 : Springer International Publishing, 2020 — ISBN 978-3-030-33338-6, S. 203–214
  3. 2019

    1. Schatz, Karsten ; Müller, Christoph ; Gralka, Patrick ; Heinemann, Moritz ; Straub, Alexander ; Schulz, Christoph ; Braun, Matthias ; Rau, Tobias ; Becher, Michael ; Diehl, Patrick ; Marcello, Dominic ; Frank, Juhan ; Müller, Thomas ; Frey, Steffen ; Reina, Guido ; Weiskopf, Daniel ; Ertl, Thomas: Visual Analysis of Structure Formation in Cosmic Evolution. In: 2019 IEEE Scientific Visualization Conference (SciVis), 2019, S. 33–41
    2. Straub, Alexander ; Heinemann, Moritz ; Ertl, Thomas: Visualization and Visual Analysis for Multiphase Flow. In: Proceedings of the DIPSI Workshop 2019. Droplet Impact Phenomena & Spray Investigations : Università degli studi di Bergamo, 2019 — ISBN 978-88-97253-02-0, S. 25–27
  4. 2018

    1. Straub, Alexander ; Karch, Grzegorz Karol ; Boblest, Sebastian ; Kaufmann, Jonas ; Sadlo, Filip ; Weigand, Bernhard ; Ertl, Thomas: Visual Analysis of Interface Deformation in Multiphase Flow. In: Proceedings of the DIPSI Workshop 2018. Droplet Impact Phenomena & Spray Investigations : Università degli studi di Bergamo, 2018 — ISBN 978-88-97413-27-1, S. 45–47
  5. 2017

    1. Karch, Grzegorz Karol ; Straub, Alexander ; Sadlo, Filip ; Ertl, Thomas: Implicit Visualization of Vector Field Topology. In: Proceedings of TopoInVis, 2017. — Reviewed abstract
  • Seminar Computergraphik in Spielen (SS22)
  • Computergraphik (WS21)
  • Seminar Computer Animation (SS21)
  • Computergraphik (WS20)
  • Scientific Visualization (SS20)
  • Seminar Mikro-Visualisierungen (WS19)
  • Seminar Realistische Echtzeitgrafik (SS19)
  • Practical Course Visual Computing (WS18)
  • Practical Course Visual Computing (SS18)
  • Computergraphik (WS17)
  • Scientific Visualization (SS17)


  • Classification and Visualization of Water Behavior in Atomistically-Resolved Porous Media Simulations (Thesis, Master)


  • Visual Analysis of Injection Processes (Thesis, Master)
  • Comparative Visualization across Physical and Parameter Space (Thesis, Master)


  • Visual Analysis of Experimental Micro-CT Data of Evaporation in Porous Media (Thesis, Master)
  • Flow Visualization for Galaxy Formation in Astrophysical Simulations (Research Project, Bachelor)
  • Curvature-Minimizing Interface Reconstruction (Thesis, Master)
  • ML-based Visual Analysis of Droplet Behaviour in Multiphase Flow Simulations (Thesis, Master)
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