Visualization of the Bulle-Effect at river bifurcations

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The visualization highlights the phenomenon of non-linear distribution of near-bed sediment at asymmetric river bifurcations, also known as the Bulle-Effect. The visualized results were generated on Blue Waters (at NCSA), using the open-source high-order spectral element based Navier-Stokes solver Nek5000 coupled with a Lagrangian particle tracking model developed for this study. The Bulle Effect causes sediment in the lower part of the water-column to preferentially move into the lateral-channel, even in cases where a relatively higher percentage of the total flow continues along the main-channel. This has implications for the construction of such channels for use in irrigation, navigation and delta restoration. The visualization emphasizes the difference in dynamics of sediment traveling at different depths of the channel, this helps animate the mechanism behind the Bulle-Effect succinctly. Additional flow features, such as velocity magnitude and coherent structures, have also been visualized to enhance our understanding of the interactions between the flow and sediment.

Original languageEnglish (US)
Title of host publicationPractice and Experience in Advanced Research Computing 2018
Subtitle of host publicationSeamless Creativity, PEARC 2018
PublisherAssociation for Computing Machinery
ISBN (Print)9781450364461
StatePublished - Jul 22 2018
Event2018 Practice and Experience in Advanced Research Computing Conference: Seamless Creativity, PEARC 2018 - Pittsburgh, United States
Duration: Jul 22 2017Jul 26 2017

Publication series

NameACM International Conference Proceeding Series


Other2018 Practice and Experience in Advanced Research Computing Conference: Seamless Creativity, PEARC 2018
Country/TerritoryUnited States


  • Lagrangian Particle Tracking
  • River Bifurcations
  • Spectral Element Method
  • Turbulent Flow

ASJC Scopus subject areas

  • Software
  • Human-Computer Interaction
  • Computer Vision and Pattern Recognition
  • Computer Networks and Communications


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