Transient analysis of the dispersion of vehicle pollution within a highway tunnel
Date Issued
December 1, 1980
Author(s)
Huang, Kao-Huah
Advisor(s)
Walter Frost
Additional Advisor(s)
John E. Caruthers
Frank S. Collins
Abstract
A transient model is used to investigate the history of induced airflow as well as the dispersion of vehicle pollution within a highway tunnel. Simulation of traffic conditions including traffic start from undisturbed conditions, complete stall, slowdown, and/or normal speed resumption, pollutant concentration build-up, and propagation through the tunnel is computed, and parametric studies are reported.
The model assumes one-dimensional, imcompressible airflow in the tunnel. The governing equation of transient induced airflow is derived from momentum balance and of pollution concentration distribution from a mass balance on the pollutant. A computer program is developed for calculating the transient logitudinal air velocities and pollution concentrations. The program, TN. DOT/UTSI TRANS, provides numerical solution for a wide range of traffic conditions and tunnel configurations.
Degree
Master of Science
Major
Aerospace Engineering
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Thesis80H822.pdf
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