1 / 14

VELOCITY ANALYSIS Randi Mendes

ENGINEERING LOG JAMS. VELOCITY ANALYSIS Randi Mendes. BACKGROUND. Benefits Bank Stabilization Fish Habitat Fish Feeding. Randi Mendes, Oregon State University 22 August 2013. RESEARCH QUESTION. Is there a Relationship between Fish Behavior and Engineered Log Jams?

ghada
Download Presentation

VELOCITY ANALYSIS Randi Mendes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ENGINEERING LOG JAMS VELOCITY ANALYSIS Randi Mendes

  2. BACKGROUND • Benefits • Bank Stabilization • Fish Habitat • Fish Feeding Randi Mendes, Oregon State University 22 August 2013

  3. RESEARCH QUESTION Is there a Relationship between Fish Behavior and Engineered Log Jams? Are there trends in the velocity profiles surrounding the log jam? http://www.sciencedaily.com/releases/2009/06/090610091224.htm Randi Mendes, Oregon State University 22 August 2013

  4. METHODS • Data Collection • Velocity: Sontek Micro ADV (Acoustic Doppler Velocimeter) Devices www.sciencedirect.com Randi Mendes, Oregon State University 22 August 2013

  5. METHODS • Velocity Analysis • Contour Plots • XY-plane, YZ-plane • Quiver (vector) Plots • XY-plane, YZ-plane Randi Mendes, Oregon State University 22 August 2013

  6. METHODS • Contour and Quiver Plots • 3 planes • XY, YZ, XZ • Slices within each plane • XY-plane: Horizontal Slices in the Z direction • YZ-plane: Vertical Slices in the X direction • XZ-plane: Vertical Slices in the Y direction • Every 10cm • Height Layer Randi Mendes, Oregon State University 22 August 2013

  7. METHODS • Creating Grids • Excel • Determine max and min X, Y, and Z values • Coordinates from ADVs • Use these values to create a two dimensional grid • Plot values of velocity magnitude on grid • Calculation depends on plane • Use ‘Average Velocity X, Y, Z’ values • Equation: Randi Mendes, Oregon State University 22 August 2013

  8. METHODS • Top Picture: • XY-plane • Magnitude of Velocity in X, Y • Bottom Picture: • YZ-plane • Magnitude of Velocity in Y, Z Randi Mendes, Oregon State University 22 August 2013

  9. METHODS • Matlab • X, Y, Z matrices • Meshgrid function • Contour function Figure 1: Contour plot of the top layer slice in the XY-plane Randi Mendes, Oregon State University 22 August 2013

  10. METHODS • Matlab • X, Y, U,V matrices • Meshgrid function • Quiver function Figure 2: Quiver plot of the top layer slice in the XY-plane Randi Mendes, Oregon State University 22 August 2013

  11. Above: Top Layer Slice in XY-plane Below: Third Layer Slice in XY-plane Above: Second Layer Slice in the XY-plane Below: Fourth Layer Slice in the XY-plane

  12. Above: 1st slice in the YZ-plane (16.0-16.49) Below: 3rd slice in the YZ-plane(17.0-17.49) Above: 2nd slice in the YZ-plane (16.50-16.9) Below: 4th slice in the YZ-plane (17.50-17.49)

  13. FINDINGS • Contour Plots • Higher values of velocity (m/s) • Isolated spots • Further from log jam • Middle layer between log jam and river ground • Lower values of velocity • Right along and close to log jam • Lower sections • Quiver Plots • Pools created in the higher sections of log jams Randi Mendes, Oregon State University 22 August 2013

  14. QUESTIONS?? Randi Mendes, Oregon State University 22 August 2013

More Related