NLR-FDF Flow Duct Facility

RI-177
Wind Tunnel
NLR
Description

Simulates turbofan engine intake and exhaust ducts to study the behaviour of sound absorbing materials under grazing flow conditions.

Main technical characteristics

The NLR flow duct facility, NLR-FDF, simulates turbofan engine intake and exhaust ducts to study the behaviour of sound absorbing materials under grazing flow conditions. It comprises two reverberation rooms connected through a flow duct. The volume of each reverberation room is 50 m3, assuring a diffuse sound field at frequencies above 350Hz.

Operational Capacity

Reynolds Number:
Mach / Maximum Velocity: 0.8
Maximum Temperature & Preassure:
Duct Diameter / Test Section Dimensions: 0.045 m2 (0.30 x 0.15 m2)

Contact Information

Barbara Ohlenforst

Marknesse (Netherlands)
EREA

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