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Fig.J-18
The Eiffel or open-circuit type wind tunnel: air sucked into the nozzle from the atmosphere - and returned into the atmosphere from the collector. The construction is cheaper (no need to build the pressurised return duct). Common for non-aeronautical aerodynamics - testing aerodynamic properties of buildings or automobiles.
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Fig.J-19 |
![]() | A typical wind tunnel investigations of separated flow regions in air flow past a truck. Flow visualisation by coloured "smoke". Note the use of the fixed bottom plate - Photo: Aerodynamic Laboratory, Institute for Aerospace Research, Ottawa, Canada |
![]() | Fish eye lens view of the largest wind tunnel in the world, - a typical example of the Eiffel type arrangement. Located at NASA's Ames Research Center, Silicon Valley, Calif. The test section dimensions are 80 by 120 ft. Photo credit: NASA Ames RC. |
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Vaclav TESAR : "BASIC FLUID MECHANICS"