ISSN:
1432-2137
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mathematics
Notes:
2 fluxes was constructed using a CSAT3 anemometer and a three-way valve. A physical delay was created by adding tubing on the upstream side of the valve. A simple timing circuit was used to control a high-speed valve that pulsed CO2in front of the intake tube to mark the locations of eddy transitions. Differences in concentrations between updraft and downdraft lines were measured as flow rates and electronic delays were varied. Tube length based on electronic delay, flow rate, and intake tube geometry was found to be adequate for separation of updrafts and downdrafts. Dispersion in the intake tube was significant and predictable. The effect of the splitter valve on dispersion was minimal. A correction factor to adjust concentration differences in the lines for dispersion may be warranted, but only for eddy reversal frequencies 〉 2 Hz.
Type of Medium:
Electronic Resource
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