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Turbulent Diffusion and Anemometer Measurements
Theoretical prediction of diffusion in homogeneous turbulent fields from the Taylor theory of diffusion by continuous movements requires knowledge of the Lagrangian turbulent velocity correlation coefficient. Although a direct theoretical connection between the Lagrangian and Eulerian correlation coefficients has not been found, it is shown that an empirical relation can be established. Eulerian correlation coefficients from hot-wire anemometer measurements are compared with Lagrangian correlation coefficients derived from diffusion measurements in a homogeneous turbulent flow. From this comparison, a relationis found that permits a direct prediction of turbulent diffusion from hotwire (Eulerian) measurements of the turbulent field. Some measurements of a mixed space-time Eulerian correlation coefficient are described, and a possible direction of further research is presented.
Turbulent Diffusion and Anemometer Measurements
Theoretical prediction of diffusion in homogeneous turbulent fields from the Taylor theory of diffusion by continuous movements requires knowledge of the Lagrangian turbulent velocity correlation coefficient. Although a direct theoretical connection between the Lagrangian and Eulerian correlation coefficients has not been found, it is shown that an empirical relation can be established. Eulerian correlation coefficients from hot-wire anemometer measurements are compared with Lagrangian correlation coefficients derived from diffusion measurements in a homogeneous turbulent flow. From this comparison, a relationis found that permits a direct prediction of turbulent diffusion from hotwire (Eulerian) measurements of the turbulent field. Some measurements of a mixed space-time Eulerian correlation coefficient are described, and a possible direction of further research is presented.
Turbulent Diffusion and Anemometer Measurements
Baldwin, L. V. (author) / Michelsen, William R. (author)
Transactions of the American Society of Civil Engineers ; 128 ; 1595-1627
2021-01-01
331963-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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