Force and Pressure Coefficients Correct, but acoustic predictions are still miles off?

[niall-oneill]

Hi, I am trying to predict the noise from a NACA 0012 airfiol, for which I have information on the pressure and force coefficients. I have set up a simulation and am getting almost identical values for these coefficients. This led me to be confident that the acoustic predictions would be reasonably similar.

My controlDict, and other acoustic files are available at https://github.com/niall-oneill/openFOAM/tree/main. I have more or less used the defaults that I saw in other tutorials aside from things that were unique to my case like the c0, dref (width of domain). Some setting that i left as default, but am unsure of are U0 and Ufft.

For curle's analogy, I am just getting a more or less constant value, and for Fwh, I am getting negative values, that do not resemble the experiment (experimental and simulated data is attached below as well)

My time step is quite small, but maybe not enough, and perhaps my mesh could be finer. My question really is what would the most important parameters to accurately describe the SPL with a sufficient resolution be? I cannot seem to find adequate information online about this.

For curle's analogy, I am just getting a more or less constant value, and for Fwh, I am getting negative values, that do not resemble the experiment. Thanks, Niall