Two-Dimensional Unsteady Gravity Currents View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

1983

AUTHORS

A. P. van Ulden , B. J. de Haan

ABSTRACT

Since long it has been recognized, that even a small density surplus can have a significant effect on the motion of a dense fluid. Probably the first to report experimental data on this subject was W. Schmidt (1911). This author describes a number of laboratory experiments with cold air. These experiments show, that a gravity current is formed, when an amount of cold air is released on the ground. This current attains a velocity relative to the ambient lighter fluid, that is of the order \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\sqrt {g'H}$$\end{document}, where \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$g' = g\Delta \rho /\rho$$\end{document} is the reduced gravity, Δρ the density difference, ρ the density and H the depth of the current. Schmidt related his experimental results to the outflow of cold air in the atmosphere. More... »

PAGES

603-616

Book

TITLE

Air Pollution Modeling and Its Application II

ISBN

978-1-4684-7943-0
978-1-4684-7941-6

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-1-4684-7941-6_36

DOI

http://dx.doi.org/10.1007/978-1-4684-7941-6_36

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1017334941


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