Professor Stuart Bradley

MSc, PhD (Auckland), FIoA, FRMetS
Visiting Professorship, Manchester UK
Visiting Professorship, Vienna Austria

Contact details
Building 303, Room 701
Phone: +64 9 373 7599 ext 88886
Email: s.bradley@auckland.ac.nz

Turbulence induced noise
Wind-generated acoustic noise in cellular phones or headphones is often the major cause of signal dropout. We use 'quiet' wind tunnels and derive theoretical turbulence-acoustics models based on deriving semi-empirical scaling laws. Funding is by leading European electronics companies.

• Wind Noise in Microphones.

Design of new acoustic instruments for remotely-sensing winds and turbulence
We design new SODARs (acoustic equivalent of a RADAR) to bounce sound off turbulent patches in the atmosphere to obtain profiles of wind and turbulence. Current applications are in cities and the Antarctic; flow around wind turbines; and visualising the vortices from landing aircraft.

• Antarctic SODAR array.
• High Resolution Wind Profiles.

Urban atmospheric environments
Understanding the mechanisms of urban environments is becoming increasingly important for climate change studies and sustainability. Within the 'street canyons' heat and pollutants can be trapped. Our acoustic remote sensing instruments are being used in collaborations with several European groups doing urban studies

• New Measurement Technology for profiling the Urban Boundary Layer.

Wind energy optimisation
With increasing size of turbines, an alternative to instrumented masts is urgently required for monitoring turbine performance. We are working with wind energy interests in EU-funded projects to validate use of acoustic remote sensing SODARs for this purpose throughout Europe.

• Calibration of SODAR for Wind Energy Applications.
• Use of SODAR in Wind Turbine Performance Measurements.