scholarly journals NUMERICAL MODEL FOR AIR POLLUTION SIMULATION FROM ROAD TRANSPORT

2021 ◽  
Vol 1 (5(69)) ◽  
pp. 58-63
Author(s):  
M. Biliaiev ◽  
V. Biliaieva ◽  
O. Berlov ◽  
V. Kozachyna
Keyword(s):  
Air Pollution ◽  
Numerical Model ◽  
Finite Difference ◽  
Numerical Integration ◽  
Complex Terrain ◽  
Computer Code ◽  
Road Transport ◽  
Finite Difference Schemes ◽  
Air Pollution Modelling ◽  
Pollutant Transfer

The problem of air pollution modelling near road which is situated in complex terrain is under consideration. To simulate wind flow pattern in case of complex terrain Navier-Stokes’s equations were used. NavierStokes’s equations were written using Helmholtz variables. Numerical finite difference schemes of splitting were used for numerical integration of Navier-Stokes’s equations. Equation of connective-diffusive pollutant transfer was used to simulate air pollution. Finite difference scheme of splitting was used for numerical integration of convectivediffusive equation of pollutant transfer. Computer code was developed on the basis of created numerical model. The results of a numerical experiment are presented.

Zasavje canyon regional online air pollution modelling system in highly complex terrain - description and validation

2012 ◽  
Vol 50 (1/2/3/4) ◽  
pp. 22 ◽  
Author(s):  
Primož Mlakar ◽  
Marija Zlata Božnar ◽  
Boštjan Grašič ◽  
Gianni Tinarelli
Keyword(s):  
Air Pollution ◽  
Complex Terrain ◽  
Air Pollution Modelling ◽  
Modelling System

Second Order Schemes for Age-Structured Population Equations

1997 ◽  
Vol 05 (01) ◽  
pp. 1-16 ◽  
Author(s):  
L. M. Abia ◽  
J. C. López-Marcos
Keyword(s):  
Finite Difference ◽  
Numerical Integration ◽  
Numerical Experiments ◽  
Second Order ◽  
Finite Difference Schemes ◽  
Rational Approximations ◽  
Structured Population ◽  
Age Dependent ◽  
Age Structured ◽  
Age Structured Population

We formulate second order finite difference schemes based on Padé rational approximations for the numerical integration of nonlinear age-dependent population models. The schemes are completely analysed and some numerical experiments are also reported in order to show numerically their accuracy.

scholarly journals A Numerical Model with Finite Difference Schemes for Multi-Species Solute Transport in Porous Media

2021 ◽  
Author(s):  
Amin GHAREHBAGHI ◽  
Keyword(s):  
Porous Media ◽  
Numerical Model ◽  
Finite Difference ◽  
Solute Transport ◽  
Decay Chain ◽  
Finite Difference Schemes ◽  
Suggested Model ◽  
One Dimensional ◽  
Homogeneous Porous Media ◽  
Order Scheme

A precise forecast of contaminant and solute transport has an inevitable role in the management of water resources. In accordance with this purpose, in this paper, a novel one-dimensional numerical model for the transport of a decay chain through homogeneous porous media is proposed. To develop the suggested model, two different schemes of the finite difference method, namely the Lax-Wendroff scheme and Fourth-Order scheme, are used. The verification and validation of the established model are examined by the analytical results of three multi-species solute dispersion problems with three- and four-chain members. The total mean square error, L2- and L∞-norms are applied to assess the results. Although analyses show that both schemes provided reliable results, the numerical results of the Lax-Wendroff scheme are more accurate.

Sign in / Sign up

Export Citation Format

Share Document