Abstract
Direct numerical simulations (DNS) are producing large quantities of data through their results. Though visualization systems are capable of parallelization and compression to handle this, rendering techniques which automatically illustrate a specific phenomena hidden within larger simulation results are still nascent. In a turbulent flow system, flow properties are volumetric in nature and cannot be displayed in their entirety. Identifying sections of the field data which contain typical and atypical interactions offers a convenient tool to analyze such data. In this paper, we propose methods to explore collision events in DNS studies of droplet collisions in a turbulent flow. Though a variety of geometric models of collisions exist to explain the collision rate, there are few tools available to explore the collisions that really occur in a simulated system. To effectively understand the underlying processes that facilitate collisions, we observe that a global view of all the collisions is required with respect to certain chosen flow parameters together with detailed 3D rendering of the trajectory of a particular collision event. We use GPU based rendering of isosurfaces and droplet trajectories to create such visualizations. The final tool is an interactive visualizer that lets the user rapidly peruse the various collision events in a given simulation and explore the variety of flow characteristics that are associated with it.
This work was supported by the National Science Foundation through grants OCI- 0904534 and ATM-0730766 and by the National Center for Atmospheric Research (NCAR). NCAR is sponsored by the National Science Foundation. Computing resources are provided by National Center for Atmospheric Research through CISL-35751010, CISL-35751014 and CISL-35751015.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Ayala, O., Rosa, B., Wang, L.P., Grabowski, W.W.: Effects of turbulence on the geometric collision rate of sedimenting droplets. Part 1. Results from direct numerical simulation. New Journal of Physics 10(7) (July 2008)
Ayala, O., Grabowski, W.W., Wang, L.P.: A hybrid approach for simulating turbulent collisions of hydrodynamically-interacting particles. J. Comput. Phys. 225, 51–73 (2007)
Clyne, J., Mininni, P., Norton, A., Rast, M.: Interactive desktop analysis of high resolution simulations: application to turbulent plume dynamics and current sheet formation. New J. Phys. 9, 301 (2007)
Falkovich, G., Pumir, A.: Sling effect in collisions of water droplets in turbulent clouds. Journal of the Atmospheric Sciences 64(12), 4497–4505 (2007)
Gosink, L.J., Anderson, J.C., Bethel, W., Joy, K.I.: Variable interactions in query-driven visualization. IEEE Trans. Vis. Comput. Graph. 13(6), 1400–1407 (2007)
Johnson, C.R., Huang, J.: Distribution-driven visualization of volume data. IEEE Trans. Vis. Comput. Graph. 15(5), 734–746 (2009)
Kendall, W., Glatter, M., Huang, J., Peterka, T., Latham, R., Ross, R.: Expressive feature characterization for ultrascale data visualization. Journal of Physics (2010)
Law, C.C., Henderson, A., Ahrens, J.: An application architecture for large data visualization: a case study. In: Proceedings of the IEEE 2001 Symposium on Parallel and Large-data Visualization and Graphics, PVG 2001, pp. 125–128. IEEE Press, Piscataway (2001)
Lum, E., Ma, K.L., Clyne, J.: A hardware-assisted scalable solution for interactive volume rendering of time-varying data. IEEE Transactions on Visualization and Computer Graphics 8(3), 286–301 (2002)
McCormick, P., Anderson, E., Martin, S., Brownlee, C., Inman, J., Maltrud, M., Kim, M., Ahrens, J., Nau, L.: Quantitatively driven visualization and analysis on emerging architectures. Journal of Physics: Conference Series 125(1), 012095 (2008)
Roberts, J.C.: Exploratory visualization using bracketing. In: Costabile, M.F. (ed.) AVI, pp. 188–192. ACM Press, New York (2004)
Soni, B., Thompson, D., Machiraju, R.: Visualizing particle/flow structure interactions in the small bronchial tubes. IEEE Transactions on Visualization and Computer Graphics 14, 1412–1427 (2008)
Weber, G.H., Ahern, S., Bethel, E.W., Borovikov, S., Childs, H.R., Deines, E., Garth, C., Hagen, H., Hamann, B., Joy, K.I., Martin, D., Meredith, J., Prabhat, Pugmire, D., Rübel, O., Van Straalen, B., Wu, K.: Recent advances in visit: Amr streamlines and query-driven visualization. In: Numerical Modeling of Space Plasma Flows: Astronum-2009 (Astronomical Society of the Pacific Conference Series), vol. 429, pp. 329–334 (2010) lBNL-3185E
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
MV, R., Parishani, H., Ayala, O., Wang, LP., Kambhamettu, C. (2011). CollisionExplorer: A Tool for Visualizing Droplet Collisions in a Turbulent Flow. In: Bebis, G., et al. Advances in Visual Computing. ISVC 2011. Lecture Notes in Computer Science, vol 6939. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-24031-7_67
Download citation
DOI: https://doi.org/10.1007/978-3-642-24031-7_67
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-24030-0
Online ISBN: 978-3-642-24031-7
eBook Packages: Computer ScienceComputer Science (R0)