On Wavelet Based Modeling of the Nitrogen Oxides Emission and Concentration due to Road Traffic in Urban Environment
Journal Title: Acta Technica Jaurinensis - Year 2015, Vol 8, Issue 1
Abstract
Differential equations can be solved wavelet-based by representing the continuous functions by their wavelet expansion coefficients and thus the corresponding differential equations are transformed to matrix equations. The wavelet basis functions are organized into resolution levels of different frequency terms at different locations, and the main advantage of the wavelet expansion representation is that the wavelet based differential equation solving methods can be adaptive, it is possible to refine the solution locally, if the precision is not sufficient at some regions.In case of the nitrogen oxides convection-advection equation, the urban environment should be taken as special material parameter in the differential equation's operator, and the matrix elements of the differential operator has to be calculated in a non-continuous environment, and the obstacles are placed so, that they are not at the boundaries of the support of the wavelets.
Authors and Affiliations
Sz. Nagy
Keywords
Related Articles
- EP ID EP630767
- DOI 10.14513/actatechjaur.v8.n1.348
- Views 315
- Downloads 0
Challenges of Digital Twin System
Today’s manufacturing and assembly systems have to be flexible to adapt quickly to an increasing number and variety of products. The Industry 4.0 conceptualization has several potentials, i.e. flexibility in business and...
Distinction of Road Categories by Road Users
In order to create self-explaining roads, a remarkable difference should exist between road categories, whereas within a given road category the layout should be homogenous. The paper analyses, how many and which road ca...
Selection of Industrial Packaging System in Closed-loop Automotive Supply Chains
The corporate decisions in the field of packaging aim to find and determine the optimal packaging functions and expenses at the same time. One-way packaging is also used in the practice, but returnable packaging is more...
Comparison of Annual Prediction Methods for Spring Flow in the Aggtelek Region
Karst spring flow plays an increasing important role in groundwater resources in Hungary. This paper evaluates three different estimation methods to predict mean annual spring flows in the Aggtelek region, using GIS base...
System Approach for Strategic Planning in Transport
The paper gives an overview on the current status of the connection between city and transport. After a short theoretical introduction on the effect of different city development strategies it shows the importance of tra...