Pollution and One-Dimensional Diffusion

These flashcards cover key concepts related to pollution types, environmental problems, and one-dimensional diffusion, providing a basis for exam preparation.

What are the two types of pollution sources?

Point source and non-point source.

What is the focus of environmental problems concerning pollution?

Understanding how much pollution there is, where it goes, who is affected, and the extent of the damages.

What dictates the spatial dispersion pattern of pollutants?

Factors such as diffusion, type of source, movement direction, environmental characteristics, and topography.

What is the formula for one-dimensional diffusion concentration?

C = (M / 4πDt) * e^(-(x-H)² / (4Dt)).

What assumption is made in one-dimensional diffusion regarding material release?

The release is a single pulse and is considered conservative/non-reactive.

What is Fick's Law in relation to diffusion?

F = -D(dC/dx), which describes the flux of a substance.

How do you discretize space in the context of solving diffusion equations?

By dividing space into grid cells.

What is the significance of the diffusion constant 'D'?

It is a characteristic constant for a given material indicating how readily it diffuses.

What are some characteristics that affect pollutant dispersion?

Wind and wave patterns, temperature, topography, and the characteristics of the surrounding area.

What does the variable 'C' represent in one-dimensional diffusion?

C represents the concentration of the pollutant.