Surface Elevation measurement not matching theoretical
Hi,
I am generating an irregular wave using the JONSWAP spectrum in a 2D wave domain. I use measuretool to evaluate the surface elevation at various points and compare the theoretical and measured values.
However, upon comparing the theoretical and measured values at X = 0, I do not see either magnitude or phase matching between the two. They look like two completely different waves (as shown below)
I used the WavePaddle_mkxx.csv file to find the theoretical surface elevation at the point X = 0. I am unable to understand why there is such significant difference between the cases. I am attaching my input files and measured surface elevation from x = -2 m to x = 0 m.
IT would be really helpful if you could find out the issue.
Version: DualSPhysics v5.0.5 (latest)
System Parameters
OS: Linux
GPU: "NVIDIA A100-PCIE-40GB"
Comments
Sorry, for safety reasons I cannot have a look at the files - if you upload to something like Github, I won't mind reading through them.
What I am noticing is that your waves seem to be extremely small, like a few centimers?
Then you should have at a minimum 0.01/10 = 0.001 m in resolution, which might be possible in 2D, but not sure.
Did you test if any of the examples provided results which match theory?
Kind regards
Hi @Asalih3d
You can take a look at the files at my github - https://github.com/ameduri2312/dualsphysics-irregular-wave
I have a current resolution of 0.006 m.
This has been sufficient for me to simulate regular waves as low as 0.03125 m. I have matched irregular waves with the theoretical values previously. What is stumping me is that both the phase and magnitudes are not matched at all.
Hi. How did you set the Begin points in the MeasureTool? When I use MeasureTool it gives me heights equal to the initial BeginZ point that I set, which results in the wave height "eta" to be a straight line across all time steps. How did you get the wave heights? Can you help me with this? Thank you very much.