| Main Title |
Effects of Stable Stratification on Turbulent Diffusion and the Decay of Grid Turbulence. |
| Author |
Britter, R. E.;
Hunt, J. C. R.;
Marsh, G. L.;
Snyder, W. H.;
|
| CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, NC. ;Cambridge Univ. (England). ;Northrop Services, Inc., Research Triangle Park, NC. |
| Year Published |
1983 |
| Report Number |
EPA-600/J-82-083; |
| Stock Number |
PB83-243287 |
| Subjects |
Turbulent diffusion;
Turbulent flow;
Stratification;
Velocity measurement;
Internal waves;
Fluid flow;
Froude number;
|
| Holdings |
| Library |
|
Call Number |
Additional Info |
Location |
Date Modified |
| NTIS |
|
PB83-243287 |
Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. |
NTIS |
06/23/1988 |
|
| Collation |
21p |
| Abstract |
Experiments are described in which a grid was towed horizontally along a large tank filled first with water and then with a stably stratified saline solution. The decay rates of the root-mean-square (r.m.s.) turbulent velocity components (w',v') perpendicular to the tow direction were measured by a Taylor diffusion probe and found to be unaffected by the stable stratification over the distances measured (5 to 20 mesh lengths downstream) and over a range of Froude number (U/NM) of infinity and 8.5 to 0.5, where M is the mesh length, U the velocity, and N the buoyancy frequency. The vertical turbulence produced at the grid was reduced up to 30% by the stratification when U/MN about 0.5. Large-scale internal wave motion was not evident in the turbulence produced by this horizontally towed grid, in contrast to the motion produced by a vertically towed grid. |
| Supplementary Notes |
Prepared in cooperation with Cambridge Univ. (England) and Northrop Services, Inc., Research Triangle Park, NC. |
| Availability Notes |
Pub. in Jrnl. of Fluid Mechaics, v127 p27-44 1983. |
| NTIS Title Notes |
Journal article. |
| PUB Date Free Form |
c1983 |
| Category Codes |
20D; 46B |
| NTIS Prices |
Not available NTIS |
| Primary Description |
600/09 |
| Document Type |
NT |
| Control Number |
332921520 |
| Cataloging Source |
NTIS/MT |
| Origin |
NTIS |
| Type |
CAT |
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