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Turbulence statistics of natural airflow within a large Open Top Chamber

Turbulence statistics of natural airflow within a large Open Top Chamber The turbulence statistics parameters (variables) of natural airflow within a large Open Top Chamber (OTC), 4 m in high height and 3 m in diameter, were measured with a three-dimensional ultrasonic anemometer/thermometer at Research Station of Changbai Mountain Forest Ecosystems Jilin Province, China in May 2004, for improving the field application of OTP. Results showed that because of the physical limitation, turbulence within OTC exhibited unique map compared with that of natural environments. There were clear daily patterns for most parameters. Turbulence here seemed to be isotropic and closely linked at all directions. Shape of eddies looked like a ’cylinder‘ which was very similar to the shape of OTC. Continuous airflow was always interpreted by large scale eddies from top of OTC and showed high interactive intermittence at all directions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Forestry Research Springer Journals

Turbulence statistics of natural airflow within a large Open Top Chamber

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References (22)

Publisher
Springer Journals
Copyright
Copyright © 2005 by Editorial Board of Journal of Forestry Research. All rights reserved
Subject
Life Sciences; Forestry
ISSN
1007-662X
eISSN
1993-0607
DOI
10.1007/BF02858196
Publisher site
See Article on Publisher Site

Abstract

The turbulence statistics parameters (variables) of natural airflow within a large Open Top Chamber (OTC), 4 m in high height and 3 m in diameter, were measured with a three-dimensional ultrasonic anemometer/thermometer at Research Station of Changbai Mountain Forest Ecosystems Jilin Province, China in May 2004, for improving the field application of OTP. Results showed that because of the physical limitation, turbulence within OTC exhibited unique map compared with that of natural environments. There were clear daily patterns for most parameters. Turbulence here seemed to be isotropic and closely linked at all directions. Shape of eddies looked like a ’cylinder‘ which was very similar to the shape of OTC. Continuous airflow was always interpreted by large scale eddies from top of OTC and showed high interactive intermittence at all directions.

Journal

Journal of Forestry ResearchSpringer Journals

Published: Mar 4, 2008

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