More detailed Description: Telemac Users Club 2016:
20161018-tuc2016_kessler_merkel.pdf
Question:
Vertexes / Eddies / Flow fields induced by obstacles (e.g. salinity or temperature):
- How does the shape (x,y,z coordinates) affect the field of flow, here: development of Karman Vortex Streets?
Difficulty:
Inverse Problem: As potentially any points bathymetry value X, Y, Z in the model affects the vorticity indicator.
Experimental Setup:
This is an academic example to show the usage of adjoints for shape optimization.
Interpretation of the resulting adjoints as a map:
The pictures show a wake behind circular pier. From empiric formulas we know the vortex creation frequency and the point of creation (here ~80° left and right against the upstream face center) Additionally, several flume experiments are available for comparison.
Especially the boundary points on the downstream side of the pier have a strong impact on the vorticity. Inner points only have limited effect which comes from the vertical component (Z coordinate) and the boundary roughness.
The alternative picture shows the three adjoints for x, y, z coordinates as gradient arrows in the direction which would reduce the asymmetry.
Download and experiment with the show case:
The example is available for Download as ZIP: -> Link (Registered Users Only!)
If your not already registered: Contact us!:
The executable is compiled for Linux 64bit.
- Unpack the folder
- Open a teminal in this folder and execute „./pier.exe“
- Results will appear in the file „T2DRES“ in the same folder
