Laboratory - Flow Mapping
[I-B]
I want to make measurements in a laboratory. [change]
My research involves flow mapping. [change]
Depending on the scales of interest, one of our
Acoustic Doppler Velocimeters (ADV) -- either the MicroADV
or the ADV -- can be used for
flow mapping. The MicroADV is capable of significantly better resolution in both space and
time. The MicroADV probe needs to be within 20 m of your PC, while the ADV can be up
to 30 m away. Distance (i.e.; cable length) is important because of attenuation of
the signal. There is less attenuation with the 10-MHz ADV as compared to the 16-MHz
MicroADV.
Either probe can be factory-configured for up, down, or side-looking applications. The
down-looking probe is most commonly used. Side-looking probes are most often used when
measurements close to a vertical boundary are of interest. Up-looking probes are used for
measuring surface boundary layers. For maximum versatility, the sensor head can be mounted
on a flexible cable, which requires you to record the XYZ orientation of the head.
 |
This ADV is
being used in a laboratory to map the flow field around a dredge head. The ADV measures
velocities at up to 25 Hz in a sampling volume smaller than 0.25 cubic centimeters, so
intricate flow fields can be mapped by physically moving the probe. The dye was injected
during the experiment as a visual indicator of the flow field. |
