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Main Title Comparison of Numerical and Laboratory Experiments on Density-Stratified Flows Around a Three-Dimensional Hill.
Author Rottman, J. W. ; Lawson, R. E. ; Snyder, W. H. ;
CORP Author North Carolina State Univ. at Raleigh.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1987
Report Number EPA/600/D-87/055;
Stock Number PB87-167003
Additional Subjects Air pollution ; Mathematical models ; Tests ;
Library Call Number Additional Info Location Last
NTIS  PB87-167003 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p
Abstract Direct comparisons between the results of a numerical model and laboratory experiments are presented for density-stratified flows around an isolated three-dimensional hill. The numerical model integrates the Navier-Stokes equations for incompressible stratified flow using a finite-difference scheme. Numerical calculations were made for Reynolds numbers (based on the hill height) of 100 and 400 and for Froude numbers between 0.5 and 2 as well as for neutrally stratified flow. The laboratory experiments were performed in a small (2.1m long) stratified towing tank, a large (25m long) stratified towing tank, and a meteorological wind tunnel. Experimental results are presented for Reynolds numbers between 100 and 40,000 and for the same Froude numbers as used in the numerical calculations. The numerical model with a Reynolds number of 100 compared best with the large scale laboratory experiments, although there were substantial differences near the hill surface and in the wake of the hill.
Supplementary Notes Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
PUB Date Free Form Mar 87
Category Codes 68A
NTIS Prices PC A02/MF A01
Primary Description 600/09
Document Type NT
Cataloging Source NTIS/MT
Control Number 716916460
Origin NTIS
Type CAT