Record Display for the EPA National Library Catalog


Main Title Streamlines in Stratified Flow over a Three-Dimensional Hill.
Author Thompson, R. S. ; Shipman, M. S. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. ;Northrop Services, Inc., Research Triangle Park, NC.
Year Published 1986
Report Number EPA/600/D-86/235;
Stock Number PB87-104501
Additional Subjects Laminar flow ; Stratification ; Hills ; Air pollution ; Fluid mechanics ; Model tests ; Flow distribution ; Dyes ; Trajectories ; Data processing ; Deflection ; Mathematical models ; Photographic techniques ; Froude number ;
Library Call Number Additional Info Location Last
NTIS  PB87-104501 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 5p
A fluid modeling study was performed in the EPA Fluid Modeling Facility's stratified towing tank to determine the effects of stratification on the flow field over a three-dimensional hill. Streamlines in the stratified flow over an axisymmetric hill were marked with a dye tracer and photographed with a two-camera system. The trajectories on the photographs were digitized and processed by computer to determine the amount of deflection of the streamlines as they pass around the hill and the closest approach of each to the hill surface. A range of approach flow Froude number from 1.0 to 8.0 based on the hill height and neutral flow were modeled.