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Deviations from unity of the ratio of the turbulent Schmidt to Prandtl numbers in stratified atmospheric flows over water surfaces

Deviations from unity of the ratio of the turbulent Schmidt to Prandtl numbers in stratified... Expressions for the ratio of the turbulent Schmidt ( Sc t ) to Prandtl ( Pr t ) numbers are derived for an idealized atmospheric surface layer flow over water surfaces. Conditions where the ansatz Sc t / Pr t ≈ 1 are then discussed. It is shown that Sc t / Pr t ≈ 1 is consistent with the active role of temperature in turbulence generation or destruction even when perfect similarity between turbulent transport of heat and water vapor is absent. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review Fluids American Physical Society (APS)

Deviations from unity of the ratio of the turbulent Schmidt to Prandtl numbers in stratified atmospheric flows over water surfaces

Deviations from unity of the ratio of the turbulent Schmidt to Prandtl numbers in stratified atmospheric flows over water surfaces

Physical Review Fluids , Volume 1 (3): 16 – Jul 20, 2016

Abstract

Expressions for the ratio of the turbulent Schmidt ( Sc t ) to Prandtl ( Pr t ) numbers are derived for an idealized atmospheric surface layer flow over water surfaces. Conditions where the ansatz Sc t / Pr t ≈ 1 are then discussed. It is shown that Sc t / Pr t ≈ 1 is consistent with the active role of temperature in turbulence generation or destruction even when perfect similarity between turbulent transport of heat and water vapor is absent.

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Publisher
American Physical Society (APS)
Copyright
©2016 American Physical Society
Subject
ARTICLES; Turbulent flows
ISSN
2469-990X
eISSN
2469-990X
DOI
10.1103/PhysRevFluids.1.034401
Publisher site
See Article on Publisher Site

Abstract

Expressions for the ratio of the turbulent Schmidt ( Sc t ) to Prandtl ( Pr t ) numbers are derived for an idealized atmospheric surface layer flow over water surfaces. Conditions where the ansatz Sc t / Pr t ≈ 1 are then discussed. It is shown that Sc t / Pr t ≈ 1 is consistent with the active role of temperature in turbulence generation or destruction even when perfect similarity between turbulent transport of heat and water vapor is absent.

Journal

Physical Review FluidsAmerican Physical Society (APS)

Published: Jul 20, 2016

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