Position innerhalb des Seitenbaumes

Start
Team
Grzegorz Karch

Grzegorz Karch

Herr Dr.

Visualisierungsinstitut der Universität Stuttgart (VISUS)

Kontakt

E-Mail
Visitenkarte (VCF)

Publikationen

Publikationen:

2023
1. Straub, Alexander ; Karch, Grzegorz K. ; Steigerwald, Jonas ; Sadlo, Filip ; Weigand, Bernhard ; Ertl, Thomas: Visual Analysis of Interface Deformation in Multiphase Flow. In: Journal of Visualization, Journal of Visualization. Bd. 26 (2023), Nr. 6, S. 1321–1338
  - BibTeX
  BibTeX
  @article{straub2023visual, abstract = {In multiphase flows, the evolution of fluid-fluid interfaces is of interest in many applications. In addition to fluid dynamic forces governing the flow in the entire volume, surface tension determines droplet interfaces. Here, the analysis of interface kinematics can help in the investigation of interface deformation and the identification of potential breakups. To this end, we developed a visualization technique using metric and shape tensors to analyze interface stretching and bending. For interface stretching, we employ the eigenpairs of the metric tensor defined for the deformation rate of the fluid surface. For interface bending, we present a technique that locally captures the interface curvature change in terms of a shape tensor, extracting its principal directions and curvatures. We then visualize interface deformation by combining both representations into a novel glyph design. We apply our method to study multiphase flow simulations with particular emphasis on interface effects. These include the interplay between fluid dynamics and surface tension forces leading to breakup processes following droplet collisions, as well as droplet-droplet interactions of different fluids where Marangoni convection along the surface is explicitly taken into account.}, author = {Straub, Alexander and Karch, Grzegorz K. and Steigerwald, Jonas and Sadlo, Filip and Weigand, Bernhard and Ertl, Thomas}, doi = {https://doi.org/10.1007/s12650-023-00939-x}, journal = {Journal of Visualization}, number = 6, pages = {1321-1338}, title = {Visual Analysis of Interface Deformation in Multiphase Flow}, volume = 26, year = 2023 }
2022
1. Straub, Alexander ; Boblest, Sebastian ; Karch, Grzegorz K. ; Sadlo, Filip ; Ertl, Thomas: Droplet-Local Line Integration for Multiphase Flow. In: 2022 IEEE Visualization and Visual Analytics (VIS), 2022 IEEE Visualization and Visual Analytics (VIS), 2022 — ISBN 978-1-6654-8812-9, S. 135–139
  - BibTeX
  - Link
  BibTeX
  @inproceedings{straub2022dropletlocal, abstract = {Line integration of stream-, streak-, and pathlines is widely used and popular for visualizing single-phase flow. In multiphase flow, i.e., where the fluid consists, e.g., of a liquid and a gaseous phase, these techniques could also provide valuable insights into the internal flow of droplets and ligaments and thus into their dynamics. However, since such structures tend to act as entities, high translational and rotational velocities often obfuscate their detail. As a remedy, we present a method for deriving a droplet-local velocity field, using a decomposition of the original velocity field removing translational and rotational velocity parts, and adapt path- and streaklines. Generally, the resulting integral lines are thus shorter and less tangled, which simplifies their analysis. We demonstrate and discuss the utility of our approach on droplets in two-phase flow data and visualize the removed velocity parts employing glyphs for context.}, author = {Straub, Alexander and Boblest, Sebastian and Karch, Grzegorz K. and Sadlo, Filip and Ertl, Thomas}, booktitle = {2022 IEEE Visualization and Visual Analytics (VIS)}, doi = {10.1109/VIS54862.2022.00036}, isbn = {978-1-6654-8812-9}, pages = {135-139}, preprinturl = {https://arxiv.org/abs/2208.11475}, title = {Droplet-Local Line Integration for Multiphase Flow}, url = {https://doi.org/10.1109/VIS54862.2022.00036}, year = 2022 }
  Link
  https://doi.org/10.1109/VIS54862.2022.00036
2021
1. Straub, Alexander ; Karch, Grzegorz K. ; Sadlo, Filip ; Ertl, Thomas: Implicit Visualization of 2D Vector Field Topology for Periodic Orbit Detection. In: Hotz, I. ; Bin Masood, T. ; Sadlo, F. ; Tierny, J. (Hrsg.) ; Hotz, I. ; Bin Masood, T. ; Sadlo, F. ; Tierny, J. (Hrsg.): Topological Methods in Data Analysis and Visualization VI, Topological Methods in Data Analysis and Visualization VI : Springer International Publishing, 2021 — ISBN 978-3-030-83500-2, S. 159–180
  - BibTeX
  - Link
  BibTeX
  @incollection{straub2021implicit, abstract = {We present implicit visualization of 2D vector field topology, and show its utility for validating and guiding approaches for periodic orbit extraction. Instead of following the traditional approach by explicit extraction of the topological skeleton, we investigate its implicit visualization by approaches that label the regions that are separated by the skeleton. While such approaches perform well for gradient fields, they fail, in particular, to visualize periodic orbits. This motivates us to complement the label-based approach with a closely related distance-based metric. We show that our approach is able to reveal periodic orbits, also in configurations in which the state-of-the-art techniques for periodic orbit extraction fail, and demonstrate their utility for interactive extraction of all periodic orbits of a 2D vector field.}, author = {Straub, Alexander and Karch, Grzegorz K. and Sadlo, Filip and Ertl, Thomas}, booktitle = {Topological Methods in Data Analysis and Visualization VI}, doi = {10.1007/978-3-030-83500-2_9}, editor = {Hotz, Ingrid and Bin Masood, Talha and Sadlo, Filip and Tierny, Julien}, isbn = {978-3-030-83500-2}, pages = {159-180}, publisher = {Springer International Publishing}, series = {Mathematics and Visualization}, title = {Implicit Visualization of 2D Vector Field Topology for Periodic Orbit Detection}, url = {https://doi.org/10.1007/978-3-030-83500-2_9}, year = 2021 }
  Link
  https://doi.org/10.1007/978-3-030-83500-2_9
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: Cossali, G. E. ; Tonini, S. (Hrsg.) ; Cossali, G. E. ; Tonini, S. (Hrsg.): Proceedings of the DIPSI Workshop 2018. Droplet Impact Phenomena & Spray Investigations, 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
  - BibTeX
  - Link
  BibTeX
  @inproceedings{straub2018visual, abstract = {This project aims at investigating droplet-related phenomena, especially the influence of forces acting on the surface. To this end, we visualize interface deformation using two quantities: interface stretching and interface bending. This allows the visual analysis of droplet behavior and interface-related forces, such as the surface tension force and forces induced by Marangoni convection. For the latter, we show an application case for debugging and aiding the implementation of the Marangoni term in the solver Free Surface 3D (FS3D). Furthermore, we demonstrate the usefulness of our approach for prediction of droplet breakup.}, address = {Bergamo, Italy}, author = {Straub, Alexander and Karch, Grzegorz Karol and Boblest, Sebastian and Kaufmann, Jonas and Sadlo, Filip and Weigand, Bernhard and Ertl, Thomas}, booktitle = {Proceedings of the DIPSI Workshop 2018. Droplet Impact Phenomena & Spray Investigations}, doi = {10.6092/DIPSI2018_pp45-47}, editor = {Cossali, Gianpietro Elvio and Tonini, Simona}, eventdate = {May, 2018}, eventtitle = {DIPSI Workshop 2018 - Droplet Impact Phenomena & Spray Investigations}, isbn = {978-88-97413-27-1}, language = {English}, organization = {Università degli studi di Bergamo}, pages = {45-47}, publisher = {Università degli studi di Bergamo}, title = {Visual Analysis of Interface Deformation in Multiphase Flow}, url = {http://dx.doi.org/10.6092%2FDIPSI2018_pp45-47}, venue = {Bergamo, Italy}, year = 2018 }
  Link
  http://dx.doi.org/10.6092%2FDIPSI2018_pp45-47
2. Gralka, Patrick ; Grottel, Sebastian ; Staib, Joachim ; Schatz, Karsten ; Karch, Grzegorz Karol ; Hirschler, M. ; Krone, Michael ; Reina, Guido ; u. a.: 2016 IEEE Scientific Visualization Contest Winner: Visual and Structural Analysis of Point-based Simulation Ensembles. In: IEEE Computer Graphics & Applications, IEEE Computer Graphics & Applications. Bd. 38 (2018), Nr. 3, S. 106–117
  - BibTeX
  BibTeX
  @article{gralka2017sciviscontest2016, author = {Gralka, Patrick and Grottel, Sebastian and Staib, Joachim and Schatz, Karsten and Karch, Grzegorz Karol and Hirschler, M. and Krone, Michael and Reina, Guido and Gumhold, S. and Ertl, Thomas}, doi = {10.1109/MCG.2017.3301120}, journal = {IEEE Computer Graphics & Applications}, number = 3, pages = {106-117}, title = {2016 IEEE Scientific Visualization Contest Winner: Visual and Structural Analysis of Point-based Simulation Ensembles}, volume = 38, year = 2018 }
2017
1. Karch, Grzegorz Karol ; Beck, Fabian ; Ertl, Moritz ; Meister, Christian ; Schulte, Kathrin ; Weigand, Bernhard ; Ertl, Thomas ; Sadlo, Filip: Visual Analysis of Inclusion Dynamics in Two-Phase Flow. In: IEEE Transactions on Visualization and Computer Graphics, IEEE Transactions on Visualization and Computer Graphics. (2017)
  - BibTeX
  - Link
  BibTeX
  @article{65b341b8ffbe4be1a4efffc0e462ee2f, author = {Karch, Grzegorz Karol and Beck, Fabian and Ertl, Moritz and Meister, Christian and Schulte, Kathrin and Weigand, Bernhard and Ertl, Thomas and Sadlo, Filip}, journal = {IEEE Transactions on Visualization and Computer Graphics}, privnote = {uid:2368}, title = {Visual Analysis of Inclusion Dynamics in Two-Phase Flow}, url = {http://dx.doi.org/10.1109/TVCG.2017.2692781}, year = 2017 }
  Link
  http://dx.doi.org/10.1109/TVCG.2017.2692781
2. Karch, Grzegorz Karol ; Straub, Alexander ; Sadlo, Filip ; Ertl, Thomas: Implicit Visualization of Vector Field Topology. In: Proceedings of TopoInVis, Proceedings of TopoInVis, 2017. — Reviewed abstract
  - BibTeX
  BibTeX
  @inproceedings{karch2017implicit, abstract = {Vector field topology is traditionally visualized by explicit extraction of graphical objects that represent the topological skeleton, including critical points, periodic orbits, and the invariant manifolds converging to those in forward or reverse time. In this work, we present implicit visualization of vector field topology by means of derived scalar fields. We obtain these fields by seeding a forward and a reverse streamline at each of their samples, and determining which critical point, periodic orbit, or solid boundary they converge to. This provides a segmentation of the domain with respect to regions of qualitatively similar streamline behavior, and thus its topological structure.We present an adaptive sampling strategy of the fields, together with an approach to determine their convergence with respect to streamline integration. Using 2D and 3D fields, we exemplify the utility and interpretation of our approach.}, author = {Karch, Grzegorz Karol and Straub, Alexander and Sadlo, Filip and Ertl, Thomas}, booktitle = {Proceedings of TopoInVis}, note = {Reviewed abstract}, title = {Implicit Visualization of Vector Field Topology}, year = 2017 }
2016
1. Ertl, Moritz ; Weigand, Bernhard ; Karch, Grzegorz Karol ; Sadlo, Filip ; Ertl, Thomas: Investigation and Visual Analysis of Direct Simulations of Quasi-Steady Primary Break-up of Shear Thinning Liquids. In: Proceedings 9th International Conference on Multiphase Flow: ICMF 2016, Proceedings 9th International Conference on Multiphase Flow: ICMF 2016, 2016. — Rezensiertes Abstract
  - BibTeX
  BibTeX
  @inproceedings{f25fd49a64344f878574d1d24d0b85d8, author = {Ertl, Moritz and Weigand, Bernhard and Karch, Grzegorz Karol and Sadlo, Filip and Ertl, Thomas}, booktitle = {Proceedings 9th International Conference on Multiphase Flow: ICMF 2016}, note = {Rezensiertes Abstract}, privnote = {uid:2279}, title = {Investigation and Visual Analysis of Direct Simulations of Quasi-Steady Primary Break-up of Shear Thinning Liquids}, year = 2016 }
2. Schulz, Christoph ; Nocaj, Arlind ; El-Assady, Mennatallah ; Frey, Steffen ; Hlawatsch, Marcel ; Hund, Michael ; Karch, Grzegorz Karol ; Netzel, Rudolf ; u. a.: Generative Data Models for Validation and Evaluation of Visualization Techniques. In: ACM (Hrsg.) ; ACM (Hrsg.): BELIV ’16: Beyond Time And Errors: Novel Evaluation Methods For Visualization, BELIV ’16: Beyond Time And Errors: Novel Evaluation Methods For Visualization, 2016
  - BibTeX
  - Link
  BibTeX
  @inproceedings{2016SchulzGenerativeDataModels, author = {Schulz, Christoph and Nocaj, Arlind and El-Assady, Mennatallah and Frey, Steffen and Hlawatsch, Marcel and Hund, Michael and Karch, Grzegorz Karol and Netzel, Rudolf and Schätzle, Christin and Butt, Miriam and Keim, Daniel A. and Ertl, Thomas and Brandes, Ulrik and Weiskopf, Daniel}, booktitle = {BELIV '16: Beyond Time And Errors: Novel Evaluation Methods For Visualization}, editor = {ACM}, privnote = {uid:2282}, title = {Generative Data Models for Validation and Evaluation of Visualization Techniques}, url = {http://dx.doi.org/10.1145/2993901.2993907}, year = 2016 }
  Link
  http://dx.doi.org/10.1145/2993901.2993907
2015
1. Karch, Grzegorz Karol ; Sadlo, Filip ; Weiskopf, Daniel ; Ertl, Thomas: Visualization of 2D Unsteady Flow Using Streamline-Based Concepts in Space-Time. In: Heidelberg, S. B. (Hrsg.) Journal of Visualization, Journal of Visualization. (2015)
  - BibTeX
  - Link
  BibTeX
  @article{4a8aaea38a2548d599ef117d0915ecb8, author = {Karch, Grzegorz Karol and Sadlo, Filip and Weiskopf, Daniel and Ertl, Thomas}, editor = {Heidelberg, Springer Berlin}, journal = {Journal of Visualization}, privnote = {uid:2056}, title = {Visualization of 2D Unsteady Flow Using Streamline-Based Concepts in Space-Time}, url = {http://dx.doi.org/10.1007/s12650-015-0284-z}, year = 2015 }
  Link
  http://dx.doi.org/10.1007/s12650-015-0284-z
2014
1. Mwalongo, Finian ; Krone, Michael ; Karch, Grzegorz Karol ; Becher, Michael ; Reina, Guido ; Ertl, Thomas: Visualization of Molecular Structures using State-of-the-Art Techniques in WebGL. In: International Conference on 3D Web Technology (Web3D’14), International Conference on 3D Web Technology (Web3D’14). Bd. 19, 2014
  - BibTeX
  - Link
  BibTeX
  @inproceedings{7383a2be03cd4a65b01c482fe2671cb3, author = {Mwalongo, Finian and Krone, Michael and Karch, Grzegorz Karol and Becher, Michael and Reina, Guido and Ertl, Thomas}, booktitle = {International Conference on 3D Web Technology (Web3D'14)}, privnote = {uid:1919}, title = {Visualization of Molecular Structures using State-of-the-Art Techniques in WebGL}, url = {http://dx.doi.org/10.1145/2628588.2628597}, volume = 19, year = 2014 }
  Link
  http://dx.doi.org/10.1145/2628588.2628597
2. Sadlo, Filip ; Karch, Grzegorz Karol ; Ertl, Thomas: Topological Features in Time-Dependent Advection-Diffusion Flow. In: Topological Methods in Data Analysis and Visualization III, Topological Methods in Data Analysis and Visualization III : Springer, 2014
  - BibTeX
  - Link
  BibTeX
  @inproceedings{5da593435401407ba5d9e743370fdcc3, author = {Sadlo, Filip and Karch, Grzegorz Karol and Ertl, Thomas}, booktitle = {Topological Methods in Data Analysis and Visualization III}, privnote = {uid:1807}, publisher = {Springer}, title = {Topological Features in Time-Dependent Advection-Diffusion Flow}, url = {http://dx.doi.org/10.1007/978-3-319-04099-8_14}, year = 2014 }
  Link
  http://dx.doi.org/10.1007/978-3-319-04099-8_14
3. Karch, Grzegorz Karol ; Sadlo, Filip ; Weiskopf, Daniel ; Ertl, Thomas: Streamline-Based Concepts for Space-Time Analysis of 2D Time-Dependent Flow. In: Proceedings of International Symposium on Flow Visualization (ISFV16), Proceedings of International Symposium on Flow Visualization (ISFV16). Bd. 2014, 2014
  - BibTeX
  BibTeX
  @inproceedings{4f1ce0a7cd924d1e89c88c71a65519d3, author = {Karch, Grzegorz Karol and Sadlo, Filip and Weiskopf, Daniel and Ertl, Thomas}, booktitle = {Proceedings of International Symposium on Flow Visualization (ISFV16)}, privnote = {uid:1953}, title = {Streamline-Based Concepts for Space-Time Analysis of 2D Time-Dependent Flow}, volume = 2014, year = 2014 }
2013
1. Karch, Grzegorz Karol ; Sadlo, Filip ; Songoro, Harald ; Gjonaj, Erion ; Weiland, Thomas ; Ertl, Thomas: Visualizing edge-conforming discrete field quantities in electromagnetic field problems with interfaces. In: ILASS–Europe, 25th European Conference on Liquid Atomization and Spray Systems, Chania, Greece, 2013, ILASS–Europe, 25th European Conference on Liquid Atomization and Spray Systems, Chania, Greece, 2013, 2013. — Rezensiertes Abstract
  - BibTeX
  BibTeX
  @inproceedings{cab4a125db2a4ab096043501f65e1fc4, author = {Karch, Grzegorz Karol and Sadlo, Filip and Songoro, Harald and Gjonaj, Erion and Weiland, Thomas and Ertl, Thomas}, booktitle = {ILASS–Europe, 25th European Conference on Liquid Atomization and Spray Systems, Chania, Greece, 2013}, note = {Rezensiertes Abstract}, privnote = {uid:1802}, title = {Visualizing edge-conforming discrete field quantities in electromagnetic field problems with interfaces}, year = 2013 }
2. Karch, Grzegorz Karol ; Sadlo, Filip ; Meister, Christian ; Rauschenberger, Philipp ; Schulte, Kathrin ; Weigand, Bernhard ; Ertl, Thomas: Visualization of Piecewise Linear Interface Calculation. In: Proceedings of Pacific Visualization Symposium (PacificVis) 2013, Proceedings of Pacific Visualization Symposium (PacificVis) 2013, 2013
  - BibTeX
  - Link
  BibTeX
  @inproceedings{71aa8537c64b4074bbc1c46a26e2d80b, author = {Karch, Grzegorz Karol and Sadlo, Filip and Meister, Christian and Rauschenberger, Philipp and Schulte, Kathrin and Weigand, Bernhard and Ertl, Thomas}, booktitle = {Proceedings of Pacific Visualization Symposium (PacificVis) 2013}, privnote = {uid:1606}, title = {Visualization of Piecewise Linear Interface Calculation}, url = {http://dx.doi.org/10.1109/PacificVis.2013.6596136}, year = 2013 }
  Link
  http://dx.doi.org/10.1109/PacificVis.2013.6596136
2012
1. Karch, Grzegorz Karol ; Sadlo, Filip ; Weiskopf, Daniel ; Hansen, Charles D. ; Li, Guo-Shi ; Ertl, Thomas: Dye-Based Flow Visualization. In: IEEE Computing in Science and Engineering, IEEE Computing in Science and Engineering. Bd. 14 (2012), Nr. 6
  - BibTeX
  - Link
  BibTeX
  @article{3445732222d743b3afd552e59e02cec9, author = {Karch, Grzegorz Karol and Sadlo, Filip and Weiskopf, Daniel and Hansen, Charles D. and Li, Guo-Shi and Ertl, Thomas}, journal = {IEEE Computing in Science and Engineering}, number = 6, privnote = {uid:1605}, title = {Dye-Based Flow Visualization}, url = {http://dx.doi.org/10.1109/MCSE.2012.118}, volume = 14, year = 2012 }
  Link
  http://dx.doi.org/10.1109/MCSE.2012.118
2. Karch, Grzegorz Karol ; Sadlo, Filip ; Weiskopf, Daniel ; Munz, Claus-Dieter ; Ertl, Thomas: Visualization of Advection-Diffusion in Unsteady Fluid Flow. In: Computer Graphics Forum, Computer Graphics Forum. Bd. 31 (2012), Nr. 3
  - BibTeX
  - Link
  BibTeX
  @article{5cd1848913514298b6779b82ea5ea4a8, author = {Karch, Grzegorz Karol and Sadlo, Filip and Weiskopf, Daniel and Munz, Claus-Dieter and Ertl, Thomas}, journal = {Computer Graphics Forum}, number = 3, privnote = {uid:1324}, title = {Visualization of Advection-Diffusion in Unsteady Fluid Flow}, url = {http://dx.doi.org/10.1111/j.1467-8659.2012.03103.x}, volume = 31, year = 2012 }
  Link
  http://dx.doi.org/10.1111/j.1467-8659.2012.03103.x
2010
1. Karch, Grzegorz Karol: GPU-based acceleration of selected clustering techniques, 2010
  - BibTeX
  BibTeX
  @mastersthesis{aee8bff2ee2c426cb4babda8c3ea3240, author = {Karch, Grzegorz Karol}, privnote = {uid:1106}, title = {GPU-based acceleration of selected clustering techniques}, year = 2010 }

Grzegorz Karch

Kontakt

Publikationen

2023

BibTeX

2022

BibTeX

Link

2021

BibTeX

Link

2018

BibTeX

Link

BibTeX

2017

BibTeX

Link

BibTeX

2016

BibTeX

BibTeX

Link

2015

BibTeX

Link

2014

BibTeX

Link

BibTeX

Link

BibTeX

2013

BibTeX

BibTeX

Link

2012

BibTeX

Link

BibTeX

Link

2010

BibTeX

So erreichen Sie uns

Zielgruppe

Formalia

Services

Organisation