TY - GEN A1 - Rosanwo, Olufemi A1 - Petz, Christoph A1 - Prohaska, Steffen A1 - Hotz, Ingrid A1 - Hege, Hans-Christian T1 - Dual Streamline Seeding - Method and Implementation N2 - This work introduces a novel streamline seeding technique based on dual streamlines that are orthogonal to the vector field, instead of tangential. The greedy algorithm presented here produces a net of orthogonal streamlines that is iteratively refined resulting in good domain coverage and a high degree of continuity and uniformity. The algorithm is easy to implement and efficient, and it naturally extends to curved surfaces. N2 - In dieser Arbeit wird eine neue Strategie zur Platzierung von Stromlinien vorgestellt. Hierzu werden zusätzliche duale Stromlinien verwendet, die --im Gegensatz zur üblichen Definition-- orthogonal zum Vektorfeld verlaufen. Der vorgestellte Greedy-Algorithmus berechnet ein Netz aus orthogonalen Stromlinien, welches iterativ verfeinert wird, was zu einer guten Abdeckung der Domäne und einer gleichmäßigen Verteilung der Stromlinien führt. Es handelt sich um einen einfach zu implementierenden und effizienten Algorithmus, der direkt auf gekrümmten Oberflächen anwendbar ist. T3 - ZIB-Report - 08-49 Y1 - 2008 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-11032 SN - 1438-0064 ER - TY - CHAP A1 - Petz, Christoph A1 - Stalling, Detlev A1 - Goubergrits, Leonid A1 - Affeld, Klaus A1 - Spuler, Andreas ED - Tolxdorff, Thomas T1 - Validierung von Strömungssimulationen in kardiovaskulären Anwendungen T2 - Bildverabeitung für die Medizin 2004 Y1 - 2004 SP - 356 EP - 360 ER - TY - JOUR A1 - Petz, Christoph A1 - Oberleithner, Kilian A1 - Sieber, Moritz A1 - Nayeri, Christian A1 - Paschereit, Oliver A1 - Wygnanski, Israel A1 - Noack, Bernd A1 - Hege, Hans-Christian T1 - Global Modes in a Swirling Jet Undergoing Vortex Breakdown JF - Physics of Fluids Y1 - 2011 U6 - https://doi.org/10.1063/1.3640007 VL - 23 SP - 091102 PB - Awarded Visualization; First Prize at 28th Annual Gallery of Fluid Motion exhibit, held at the 63th Annual Meeting of the American Physical Society, Division of Fluid Dynamics (Long Beach, CA, USA, November 21-23, 2010). ER - TY - CHAP A1 - Kasten, Jens A1 - Weinkauf, Tino A1 - Petz, Christoph A1 - Hotz, Ingrid A1 - Noack, Bernd R. A1 - Hege, Hans-Christian T1 - Extraction of Coherent Structures from Natural and Actuated Flows T2 - Active Flow Control II Y1 - 2010 SN - 978-3-642-11734-3 U6 - https://doi.org/10.1007/978-3-642-11735-0_24 VL - 108 SP - 373 EP - 387 PB - Springer, Berlin ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Thamsen, Bente A1 - Berthe, André A1 - Poethke, Jens A1 - Kertzscher, Ulrich A1 - Affeld, Klaus A1 - Petz, Christoph A1 - Hege, Hans-Christian A1 - Hoch, Heinrich A1 - Spuler, Andreas T1 - In Vitro Study of Near-Wall Flow in a Cerebral Aneurysm Model with and without Coils JF - American Journal of Neuroradiology Y1 - 2010 U6 - https://doi.org/10.3174/ajnr.A2121 VL - 31:8 SP - 1521 EP - 1528 ER - TY - JOUR A1 - Pöthkow, Kai A1 - Petz, Christoph A1 - Hege, Hans-Christian T1 - Approximate Level-Crossing Probabilities for Interactive Visualization of Uncertain Isocontours JF - International Journal for Uncertainty Quantification Y1 - 2013 U6 - https://doi.org/10.1615/Int.J.UncertaintyQuantification.2012003958 VL - 3 IS - 2 SP - 101 EP - 117 ER - TY - CHAP A1 - Rosanwo, Olufemi A1 - Petz, Christoph A1 - Prohaska, Steffen A1 - Hotz, Ingrid A1 - Hege, Hans-Christian ED - Eades, Peter ED - Ertl, Thomas ED - Shen, Han-Wei T1 - Dual Streamline Seeding T2 - Proceedings of the IEEE Pacific Visualization Symposium Y1 - 2009 SP - 9 EP - 16 CY - Beijing, China ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Weber, Sarah A1 - Petz, Christoph A1 - Spuler, Andreas A1 - Pöthke, Jens A1 - Berthe, André A1 - Hege, Hans-Christian T1 - Wall-PIV as a Near Wall Flow Validation Tool for CFD JF - Journal of Visualization Y1 - 2009 VL - 12 IS - 3 SP - 241 EP - 250 ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Wellnhofer, Ernst A1 - Kertzscher, Ulrich A1 - Affeld, Klaus A1 - Petz, Christoph A1 - Hege, Hans-Christian T1 - Coronary Artery WSS Profiling Using a Geometry Reconstruction Based on Biplane Angiography JF - Annals of Biomedical Engineering Y1 - 2009 U6 - https://doi.org/s10439-009-9656-7 VL - 37 IS - 4 SP - 682 EP - 691 PB - Springer ER - TY - JOUR A1 - Oberleithner, Kilian A1 - Sieber, Moritz A1 - Nayeri, Christian A1 - Paschereit, Christian A1 - Petz, Christoph A1 - Hege, Hans-Christian A1 - Noack, Bernd A1 - J. Wygnanski, Israel T1 - Three-dimensional Coherent Structures of the Swirling Jet Undergoing Vortex breakdown: Stability Analysis and Empirical Mode Construction JF - J. Fluid Mech. Y1 - 2011 U6 - https://doi.org/10.1017/jfm.2011.141 VL - 679 SP - 383 EP - 414 ER - TY - CHAP A1 - Goubergrits, Leonid A1 - Pöthke, Jens A1 - Petz, Christoph A1 - Hege, Hans-Christian A1 - Spuler, Andreas A1 - Kertzscher, Ulrich T1 - 3D Bildgebung von zerebralen Aneurysmen T2 - Bildverarbeitung für die Medizin Y1 - 2008 U6 - https://doi.org/10.1007/978-3-540-78640-5_31 SP - 153 EP - 157 ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Kertzscher, Ulrich A1 - Schöneberg, Bastian A1 - Wellnhofer, Ernst A1 - Petz, Christoph T1 - CFD analysis in an anatomically realistic coronary artery model based on non-invasive 3D imaging JF - Int. J. Cardiovasc. Imaging Y1 - 2008 U6 - https://doi.org/10.1007/s10554-007-9275-z VL - 24(4) SP - 411 EP - 421 ER - TY - CHAP A1 - Petz, Christoph A1 - Prohaska, Steffen A1 - Goubergrits, Leonid A1 - Kertzscher, Ulrich A1 - Hege, Hans-Christian T1 - Near-Wall Flow Visualization in Flattened Surface Neighborhoods T2 - Proc. Simulation and Visualization 2008 Y1 - 2008 UR - http://www.simvis.org/Tagung2008/sv-proceedings.html SP - 93 EP - 105 CY - Magdeburg, Germany ER - TY - JOUR A1 - Oberleithner, Kilian A1 - Sieber, Moritz A1 - Nayeri, Christian A1 - Paschereit, Christian A1 - Petz, Christoph A1 - Hege, Hans-Christian A1 - Noack, Bernd A1 - Wygnanski, Israel T1 - Self Excited Oscillations in Swirling Jets: Stability Analysis and Empirical Mode Construction JF - Bulletin of the American Physical Society Y1 - 2010 UR - http://meetings.aps.org/link/BAPS.2010.DFD.GE.8 N1 - 63rd Annual Meeting of the APS Division of Fluid Dynamics, November 21-23, 2010, Long Beach, CA VL - 55 IS - 16 SP - GE.00008 ER - TY - JOUR A1 - Kasten, Jens A1 - Petz, Christoph A1 - Hotz, Ingrid A1 - Hege, Hans-Christian A1 - Noack, Bernd A1 - Tadmor, Gilead T1 - Lagrangian Feature Extraction of the Cylinder Wake JF - Physics of Fluids Y1 - 2010 U6 - https://doi.org/10.1063/1.3483220 VL - 22 IS - 9 SP - 091108 ER - TY - JOUR A1 - Petz, Christoph A1 - Pöthkow, Kai A1 - Hege, Hans-Christian T1 - Probabilistic Local Features in Uncertain Vector Fields with Spatial Correlation JF - Computer Graphics Forum Y1 - 2012 VL - 31 IS - 3 SP - 1045 EP - 1054 ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Schaller, Jens A1 - Kertzscher, Ulrich A1 - van den Bruck, Nils A1 - Pöthkow, Kai A1 - Petz, Christoph A1 - Hege, Hans-Christian A1 - Spuler, Andreas T1 - Statistical wall shear stress maps of ruptured and unruptured middle cerebral artery aneurysms JF - J. R. Soc. Interface Y1 - 2012 U6 - https://doi.org/10.1098/rsif.2011.0490 VL - 9 IS - 69 SP - 677 EP - 688 ER - TY - JOUR A1 - Petz, Christoph A1 - Kasten, Jens A1 - Prohaska, Steffen A1 - Hege, Hans-Christian T1 - Hierarchical Vortex Regions in Swirling Flow JF - Computer Graphics Forum Y1 - 2009 VL - 28 IS - 3 SP - 863 EP - 870 ER - TY - CHAP A1 - Kasten, Jens A1 - Petz, Christoph A1 - Hotz, Ingrid A1 - Noack, Bernd R. A1 - Hege, Hans-Christian ED - Magnor, Marcus ED - Rosenhahn, Bodo ED - Theisel, Holger T1 - Localized Finite-time Lyapunov Exponent for Unsteady Flow Analysis T2 - Vision Modeling and Visualization Y1 - 2009 SN - 978-3-9804874-8-1 VL - 1 SP - 265 EP - 274 PB - Universität Magdeburg, Inst. f. Simulation u. Graph. ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Kertzscher, Ulrich A1 - Affeld, Klaus A1 - Petz, Christoph A1 - Stalling, Detlev T1 - Numerical Dye Washout Method as a Tool for Characterizing the Heart Valve Flow JF - ASAIO Journal Y1 - 2008 U6 - https://doi.org/10.1097/MAT.0b013e31815c5e38 VL - 54(1) SP - 50 EP - 57 ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Timmel, Tobias A1 - Affeld, Klaus A1 - Petz, Christoph A1 - Stalling, Detlev A1 - Hege, Hans-Christian T1 - Characterization of an artificial valve flow using the numerical dye washout visualization technique JF - Artificial Organs Y1 - 2006 VL - 30(8) SP - 642 EP - 650 ER - TY - CHAP A1 - Poethke, Jens A1 - Goubergrits, Leonid A1 - Kertzscher, Ulrich A1 - Spuler, Andreas A1 - Petz, Christoph A1 - Hege, Hans-Christian ED - Jos Vander Sloten, Pascal ED - Haueisen, Jens T1 - Impact of imaging modality for analysis of a cerebral aneurysm: Comparison between CT, MRI and 3DRA T2 - Proceedings of the 4th European Conference of the International Federation for Medical and Biological Engineering Y1 - 2008 U6 - https://doi.org/10.1007/978-3-540-89208-3 SP - 1889 EP - 1893 PB - Springer-Verlag CY - Antwerp, Belgium ER - TY - CHAP A1 - Duffy, Alex A1 - Harris, Stefan A1 - Marzi, Jochen A1 - Petz, Christoph A1 - Wu, Zichao T1 - VIRTUE: Integrating CFD Ship Design T2 - Proc. of 7th International Conference on Hydrodynamics Y1 - 2006 ER - TY - GEN A1 - Petz, Christoph A1 - Weinkauf, Tino A1 - Streckwall, Heinrich A1 - Salvatore, Franceso A1 - Noack, Bernd R. A1 - Hege, Hans-Christian T1 - Vortex Structures at a Rotating Ship Propeller Y1 - 2006 PB - Presented at the 24th Annual Gallery of Fluid Motion exhibit, held at the 59th Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Tampa Bay ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Schaller, Jens A1 - Kertzscher, Ulrich A1 - Petz, Christoph A1 - Hege, Hans-Christian A1 - Spuler, Andreas T1 - Reproducibility of Image-Based Analysis of Cerebral Aneurysm Geometry and Hemodynamics: An In-Vitro Study of Magnetic Resonance Imaging, Computed Tomography, and Three-Dimensional Rotational Angiography JF - Journal of Neurological Surgery, Part A: Central European Neurosurgery Y1 - 2013 U6 - https://doi.org/10.1055/s-0033-1342937 VL - 74 IS - 5 SP - 294 EP - 302 ER -