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A platform for research: civil engineering, architecture and urbanism
Modelling pollution dynamics of longitudinally ventilated road tunnels
AbstractThis paper develops a mathematical model in various forms to describe the dynamic response between vehicle exhaust emissions, air flow and the resulting pollutant concentrations in a longitudinally ventilated tunnel. Starting with the well-known “advection-diffusion” partial differential equation, several innovations in analysis are presented to finally create a simple estimator usable in predictive control algorithms. These innovations include;a variable time step numerical method of solution,a discrete time (- domain) model of the system,a linear analytical solution for harmonic inputs which leads to a frequency domain description of the system dynamics for small perturbations about a mean operating condition,a continuous time (- domain) transfer function model, derived from the frequency domain analysis.
HighlightsA variable time step numerical method of solution.A discrete time (z- domain) model of the system.A linear analytical solution for small harmonic perturbations about a set point.A continuous time (s- domain) transfer function model of the system.A frequency domain description of the system dynamics.
Modelling pollution dynamics of longitudinally ventilated road tunnels
AbstractThis paper develops a mathematical model in various forms to describe the dynamic response between vehicle exhaust emissions, air flow and the resulting pollutant concentrations in a longitudinally ventilated tunnel. Starting with the well-known “advection-diffusion” partial differential equation, several innovations in analysis are presented to finally create a simple estimator usable in predictive control algorithms. These innovations include;a variable time step numerical method of solution,a discrete time (- domain) model of the system,a linear analytical solution for harmonic inputs which leads to a frequency domain description of the system dynamics for small perturbations about a mean operating condition,a continuous time (- domain) transfer function model, derived from the frequency domain analysis.
HighlightsA variable time step numerical method of solution.A discrete time (z- domain) model of the system.A linear analytical solution for small harmonic perturbations about a set point.A continuous time (s- domain) transfer function model of the system.A frequency domain description of the system dynamics.
Modelling pollution dynamics of longitudinally ventilated road tunnels
Ridley, Peter (author)
Journal of Wind Engineering and Industrial Aerodynamics ; 163 ; 55-64
2016-12-27
10 pages
Article (Journal)
Electronic Resource
English
Modelling pollution dynamics of longitudinally ventilated road tunnels
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