Sökning: "backward erosion"

Hittade 3 uppsatser innehållade orden backward erosion.

  1. 1. Flow modeling and bank erosion downstream due to spillway discharge : Independent thesis Advanced level (professional degree) 30 ECTS credits

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för beräkningsvetenskap

    Författare :Alexander Lindblad; [2022]
    Nyckelord :Ansys Fluent; Multiphase Flow; Spillway; CFD; Volume of Fluid; Reynolds-averaged Navier-Stokes;

    Sammanfattning : Dam spillways and downstream areas are used to guide large flows of water during for example heavy rainfall. The large flows give way to turbulent pattern sand velocities that may damage the river banks or the dam structure. Investigation of these water patterns at certain flows are therefore done to examine at risk areas. LÄS MER

  3. 2. Estimating the probability of levee failure for flood risk mapping : An application to Paglia River

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Theodora Neromylioti; [2020]
    Nyckelord :Levee failure; inner erosion; piping; backward erosion; seepage; probability of failure; fragility curves; time-dependent failure; hydraulic modelling; flood risk; flood inundation; HEC-RAS;

    Sammanfattning : Climate change results to more extreme and frequent flood events that induce extra risk to flood protection structures such as levees. Thus, estimation of the probability of levee failure is of utmost importance when it comes to structural safety and flood risk assessment. LÄS MER

  4. 3. Internal erosion in the pervious foundation of an embankment dam : A case study on the Lossen dam

    Master-uppsats, KTH/Vattendragsteknik

    Författare :Gabriella Molinder; [2016]
    Nyckelord :seepage; internal erosion; suffusion; contact erosion; embankment dams;

    Sammanfattning : The Lossen dam is an embankment dam in the Swedish river Ljusnan. The dam is founded on thick layers of stratified glaciofluvial sediments and till. Ever since construction, there have been problems with high pore pressures, large seepage flows and springs downstream of the right part of the dam. LÄS MER