- #1
Bispen
- 3
- 0
Hi!
I would like to submit a model glider to a CFD wind tunnel so I can determine what would be its optimum glide ratio and forward speed at this incidence.
I am not supposed to know in advance the range of speed this glider can fly (between stall and structural damage), so the speed I will initially set in the CFD software is arbitrary.
From documents I have read, the speed is given by the target Re number which has to be kept constant during the whole measurements at different conditions. Some reports mention something between 1.75e5 to 3e5.
How to choose then? And what about if I go beyond, won't it respect anymore the nature of the flow in reality?
If anyone could bring some clarifications and a recommendation for this test, it would be fantastic.
Thanks
I would like to submit a model glider to a CFD wind tunnel so I can determine what would be its optimum glide ratio and forward speed at this incidence.
I am not supposed to know in advance the range of speed this glider can fly (between stall and structural damage), so the speed I will initially set in the CFD software is arbitrary.
From documents I have read, the speed is given by the target Re number which has to be kept constant during the whole measurements at different conditions. Some reports mention something between 1.75e5 to 3e5.
How to choose then? And what about if I go beyond, won't it respect anymore the nature of the flow in reality?
If anyone could bring some clarifications and a recommendation for this test, it would be fantastic.
Thanks