Flow visualization is an important mean for studying flow processes in aerodynamics and hydrodynamics. It allows obtaining qualitative valuable information about flow behaviour, that is needed for understanding of aerodynamic performance of an aircraft, especially in critical conditions. With growing advances in 3D optical measuring techniques, accurate 3D registration and measurements of fast developing processes became possible. The paper addresses the problem of accurate metric 3D reconstruction of flow in hydrodynamic tunnel that is necessary for studying aerodynamic process in aircraft icing conditions. It presents the techniques developed for optical measurement system calibration and for accurate flow 3D registration, and the results of laboratory flow 3D reconstruction and visualization. Experimental evaluation of the developed techniques in laboratory hydrodynamic tunnel demonstrated high accuracy of 3D measurements and readiness for applying in aircraft icing study.

image-based 3D measurements, hydrodynamic tunnel, aircraft icing, multimedia imaging, 3D visualization

Knyaz Vladimir Alexandrovich,  ,  orcid.org/0000-0002-4466-244X,  Moscow Institute of Physics and Technology (MIPT); State Res. Institute of Aviation Systems (GosNIIAS)

Kniaz Vladimir Vladimirovich,  ,  orcid.org/0000-0003-2912-9986,  Moscow Institute of Physics and Technology (MIPT); State Res. Institute of Aviation Systems (GosNIIAS)

Ippolitov Evgeny Viktorovich,  ,  Institute on Laser and Information Technologies of RAS – branch Research Centre Crystallography and Photonics RAS

Novikov Mikhail Mikhailovich,  ,  orcid.org/0000-0003-0626-793X,  Institute on Laser and Information Technologies of RAS – branch Research Centre Crystallography and Photonics RAS

Emelyanov Anton V.,  ,  Moscow Institute of Physics and Technology (MIPT)