Main Title |
HIGHWAY-ROADWAY. EPA/ORD (Environmental Protection Agency/Office of Research and Development) Air Quality Simulation Model. |
Author |
Petersen, B. ;
|
CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, NC. Meteorology and Assessment Div. |
Publisher |
1 Aug 89 |
Year Published |
1989 |
Report Number |
EPA/SW/DK-89/160; |
Stock Number |
PB90-500810 |
Additional Subjects |
Models-simulation ;
Air pollution ;
Mathematical models ;
Roads ;
Highways ;
Concentration(Composition) ;
Forecasting ;
Turbulent diffusion ;
Contaminants ;
Vehicles ;
Chemical reactions ;
Velocity ;
Distance ;
Software ;
Diskettes ;
L=Fortran ;
H=IBM 3090
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB90-500810 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
1 diskette |
Abstract |
ROADWAY is a finite-difference model which solves a conservation of species equation to predict pollutant concentrations within two hundred meters of a highway. It uses surface layer similarity theory to predict wind and eddy diffusion profiles from temperature at two heights and wind velocity upwind of the highway. A unique feature of the model is its use of vehicle wake theory. It is assumed that vehicle wakes affect the wind and turbulance fields in a linear manner with wake intensity a function of vehicle speed, downwind distance, and distance from the wake center. HIWAY is a model which computes the hourly concentrations of non-reactive pollutants downwind of roadways. It is applicable for uniform wind conditions and level terrain. Although best suited for at-grade highways, it can also be applied to depressed highways. |
Availability Notes |
The model is contained on 5 1/4-inch, double density (360K) diskettes, compatible with the IBM PC microcomputer, ready for uploading to an IBM model 3090 computer. Price includes documentation, PB80-227556. |
NTIS Title Notes |
Model-Simulation. |
Category Codes |
68A#; 55B; 85H; 62 |
NTIS Prices |
CP D01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
002518742 |
Origin |
NTIS |
Type |
CAT |