TY - GEN
T1 - Responses of experimental river corridors to engineered log jams
AU - Gallisdorfer, M. S.
AU - Ghaneeizad, S. M.
AU - Bennett, S. J.
AU - Atkinson, J. F.
AU - Cai, D.
AU - Simon, A.
AU - Langendoen, E. J.
N1 - Publisher Copyright:
© 2015 ASCE.
PY - 2015
Y1 - 2015
N2 - Physical models of the Big Sioux River, SD, were constructed to assess the impact on flow, drag, and bed erosion and deposition in response to the installation of two different types of engineered log jams (ELJs). A fixed-bed model focused on flow velocity and forces acting on an instrumented ELJ, and a movable-bed model focused on channel morphodynamics. The results show that: (1) downstream flow velocity, as expected, can be markedly affected by the presence of the ELJs, (2) both ELJ types afforded relatively large regions of bank protection, and (3) the relatively larger ELJ had a higher drag coefficient, relatively larger areas of bed deformation, and greater impact on the opposite stream bank as compared to the relatively smaller ELJ. These modeling results show that the style and size of ELJs can have a significant impact on flow resistance, bank protection, and stream channel responses, which should facilitate practitioners in the effective design of ELJs for natural rivers.
AB - Physical models of the Big Sioux River, SD, were constructed to assess the impact on flow, drag, and bed erosion and deposition in response to the installation of two different types of engineered log jams (ELJs). A fixed-bed model focused on flow velocity and forces acting on an instrumented ELJ, and a movable-bed model focused on channel morphodynamics. The results show that: (1) downstream flow velocity, as expected, can be markedly affected by the presence of the ELJs, (2) both ELJ types afforded relatively large regions of bank protection, and (3) the relatively larger ELJ had a higher drag coefficient, relatively larger areas of bed deformation, and greater impact on the opposite stream bank as compared to the relatively smaller ELJ. These modeling results show that the style and size of ELJs can have a significant impact on flow resistance, bank protection, and stream channel responses, which should facilitate practitioners in the effective design of ELJs for natural rivers.
UR - https://www.scopus.com/pages/publications/84935141896
U2 - 10.1061/9780784479162.177
DO - 10.1061/9780784479162.177
M3 - Conference contribution
AN - SCOPUS:84935141896
T3 - World Environmental and Water Resources Congress 2015: Floods, Droughts, and Ecosystems - Proceedings of the 2015 World Environmental and Water Resources Congress
SP - 1811
EP - 1820
BT - World Environmental and Water Resources Congress 2015
A2 - Webster, Veronica L.
A2 - Karvazy, Karen
PB - American Society of Civil Engineers (ASCE)
T2 - World Environmental and Water Resources Congress 2015: Floods, Droughts, and Ecosystems
Y2 - 17 May 2015 through 21 May 2015
ER -