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Extracting velocity vectors at blade sections in QBlade
Hello everyone,
I am currently working with QBlade to analyze a propeller, and I would like to obtain the velocity vectors at different blade sections. My goal is to extract the velocity components (axial, tangential, etc.) that QBlade calculates for each radial station along the blade.
So far, I have been able to run the simulations and access performance results, but I haven’t found a clear way to export or visualize the velocity vectors at the blade sections. Could someone please guide me on how to retrieve this data from QBlade? Is it possible to access it directly from the results or through any post-processing/export function?
Any advice, documentation pointers, or examples would be greatly appreciated.
Thank you very much for your help!
Best regards,
David
Hi David,
The velocity vectors along the blade can be reconstructed from the “Blade Graphs,” which display variable distributions over the blade span for either a steady BEM or time-domain simulation. Using the variables “Angle of Attack” or “Inflow Angle” in combination with “Relative Velocity”, it’s possible to reconstruct the local velocity vectors at each radial position along the blade.
You can export data from a graph directly to the clipboard or into a file from the graph context menu, opened with a right mouse click on the graph that shows the data you want to export.
Best regards,
David
