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The test section of the Modine climatic wind tunnel is open, surrounded by a large volume chamber, the plenum. The spread of the jet is not handicapped by the plenum walls but is free at the edges. Consequently the test section is easily accessible and the test vehicle visible from all sides.

In dimensioning the plenum, sufficient space was left to allow the later installation of lamps for the simulation of sunlight. When the wind tunnel is used with the 12 m²nozzle - as with commercial vehicles - a very large test section length wit 15.8 meters is available which can be extended in special cases to 19.3 meters. This makes it possible to test even long buses in the Modine climatic wind tunnel. It has proved advantageous to guide the flow over the bus by a “mantel“, as shown in the picture.


Pkw, Lkw und Bus (mit "Mantel")