| The Cobra Probe is able to measure
flow fields within a range of ±45° at frequencies of
more than 2000 Hz, making it ideal for the measurement of turbulent
Data obtained by the Cobra Probe include mean
and time-varying values of: velocity (3-components); pitch and
yaw angles; and local static pressure. Turbulence intensity and
all six components of Reynolds stresses are also calculated and
displayed. Other higher order terms can be calculated from the time-varying data.
Data are displayed in real-time as they are
obtained and can be saved to disk for later analysis. Real-time
frequency analysis is also included - perfect for analysing vortex
shedding and other periodic flows.
Accuracy of measurements is somewhat dependent
on turbulence levels but is generally within ±0.5 m/s and
±1° pitch and yaw up to about 30% turbulence intensity.
The Cobra Probe remains relatively accurate to greater than 30%