Back

Aerodynamics & Acoustics

Anechoic Chamber

Fan noise directivity measurement

The laboratory features a full anechoic chamber and a general testing area. The chamber is designed to simulate infinite space, with sound-absorbing wedges made of porous materials that absorb at least 99% of incident sound energy. It is primarily used for studying sound source mechanisms, such as fan noise, and includes a reflective floor for semi-anechoic testing when required. The adjacent general testing area is equipped for acoustic impedance tube measurements and flow-through duct acoustics. The lab is outfitted with state-of-the-art instrumentation, including an impedance tube, laser vibrometer, accelerometers, basic flow measurement devices, and advanced data acquisition and analysis tools. Additionally, it supports numerical simulations with finite element and computational fluid dynamics software packages.