Good Evening! I've been looking at this problem for a bit and I am a little stumped on it. I asked two graduate level Fluids TAs and my other classmates and they are stumped as well. I hope that you can help... I am doing an experiment that involves a cantilever beam and wind flow that is forcing the beam to deflect downward. The flow bench is positioned above the cantilever and is blowing the air in the same direction as the deflection. I am then taking a thermal anemometer and measuring the velocities at points just above and below the beam, starting at the center of the beam and working my way out until the velocity is zero. I hope to achieve a measured flow pattern around the beam from the anemometer. I am trying to non-dimensionalize my flow velocities for my results and I am having an issue figuring out how to characterize the Reynolds Number for this flow. I was using D as the distance from the center line axis of the cantilever (perpendicular to the flow) but I don't think that is right. How would you calculate a Reynolds Number for this type of problem? Let me know if you need help visualizing it. Thank you, C.S.