Method and device for low-interference measurement of models in a wind tunnel

摘要

A method and a device for low-interference measurement of models in a wind tunnel makes use of at least one wall (1) which is slotted in the flow direction and has a variable aperture ratio. The aperture ratio is set and the measurement of the pressure, the forces etc. is carried out. For each individual measurement point of the measurement, the pressure distribution at the wall is first measured, with the wall (1) closed, over the length of the measurement section and at characteristic points of the model. The wall influences on the model are calculated from the pressure distribution at the wall (1). Finally, the aperture ratio of the slotted wall is varied in such a way that the wall influences on the model are compensated at the characteristic points before measurement of the measurement point is performed. <IMAGE>