76th Annual Meeting of the APS Division of Fluid Dynamics (November 19, 2023 — November 21, 2023)

P0053: Painting erosion effects of flow over granular beds

  • Kelsie Conner, Wake Forest University
  • Rohan Gupta, Wake Forest University
  • Jacob Kathman, Wake Forest University
  • Paul Mahvi, Cal Poly University
  • Ellen Saunders, Cal Poly University
  • Joyce Lin, Cal Poly University
  • Claudia Falcon , Wake Forest University
DOI: https://doi.org/10.1103/APS.DFD.2023.GFM.P0053

We study the dynamics of viscous fluids going over particles in the context of landscape erosion. Silicone oil flows down an incline plane over lumps of grains mixed with fluid. Changes in the particle bed concentration lead to pronounced erosion rates and particle transport. These images show sand particle beds, of different colors and increasing oil concentration, after the fluid has eroded them. The purple lump has the largest oil concentration while the red lump is dry sand. The dry sand red square experiences the least amount of erosion while the oily purple square, located at a symmetrical location, experiences more particle erosion.  


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