A Comparison of Diode-Laser-Doppler Velocimeter and Medium Resolution Turbulence Cluster Measurements in MIZEX 84.
Abstract
During the MIZEX 84 Experiment two prototype Diode-Laser-Doppler Velocimeters were tested in the oceanic boundary layer under a drifting ice floe. Part of the testing included a comparison of turbulent flow measured with the DLDV instruments and with a so-called Medium Resolution Cluster of small partially ducted rotors mounted along orthogonal axes, used in a separate boundary-layer experiment. This report presents data from 15 runs in which the two systems, suspended on the same inverted mast but separated vertically by about half a meter, measured the flow simultaneously. One-second averages of the DLDV and MRC output are presented, along with statistics of flow measured by each system, direct comparison of the horizontal and 45-degree components, and autospectra and squared coherency calculated from each of 12 fourteen-minute runs. Overall, flow measurements made with the DLDV instruments compare favorably with those of the MRC.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1985
- Accession Number
- ADA187561
Entities
People
- Miles G. Mcphee