Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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 (Autor:in)
Journal of Wind Engineering and Industrial Aerodynamics ; 163 ; 55-64
27.12.2016
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Modelling pollution dynamics of longitudinally ventilated road tunnels
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