Thank you for the reply. I did take a look at the propeller aerodynamics.
Im not sure its what im looking for.
I want to study the ground effect of 6 propellers . In other words, i want to visualize how the flow looks like when the drone is hovering at 1m with a solid ground under it. How far will the flow reach in x and y direction (not z, the height)? When i change the height, how will the flow be in the x and y direction?
any suggestions for that?