TY - GEN
T1 - Visualization of the Bulle-Effect at river bifurcations
AU - Dutta, Som
AU - Fischer, Paul
AU - Van Moer, Mark W.
AU - Garcia, Marcelo H.
N1 - Publisher Copyright:
© 2018 Copyright held by the owner/author(s).
PY - 2018/7/22
Y1 - 2018/7/22
N2 - 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.
AB - 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.
KW - Lagrangian Particle Tracking
KW - River Bifurcations
KW - Spectral Element Method
KW - Turbulent Flow
UR - http://www.scopus.com/inward/record.url?scp=85051425230&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85051425230&partnerID=8YFLogxK
U2 - 10.1145/3219104.3229433
DO - 10.1145/3219104.3229433
M3 - Conference contribution
AN - SCOPUS:85051425230
SN - 9781450364461
T3 - ACM International Conference Proceeding Series
BT - Practice and Experience in Advanced Research Computing 2018
PB - Association for Computing Machinery
T2 - 2018 Practice and Experience in Advanced Research Computing Conference: Seamless Creativity, PEARC 2018
Y2 - 22 July 2017 through 26 July 2017
ER -