The cryogenic wind tunnel can be cooled down with liquid nitrogen to -173 °C and used as a subsonic wind tunnel for simulating high Reynolds-number flow conditions. Such tests, e.g., on the biggest existing wind turbine blade segments, would otherwise only be possible in very large and/or pressurized wind tunnels.
The cryogenic wind tunnel Cologne is operated by the foundation German-Dutch Wind Tunnels (DNW) on behalf of DLR.


Dipl.-Ing. Carsten Lenfers
Cryogenic Wind Tunnel, DNW
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