Diffusion in One Dimension
Diffusion in One Dimension
The equation for unsteadystate diffusion is =Dc, where is the distance and is the solute concentration. This Demonstration plots the timeevolution of the concentration profile in the solute, for varying coefficient of diffusion and concentration amplitude.The diffusion function is determined as a function of the distance , the diffusion coefficient , and time .
∂c
∂t
2
∂
∂
2
x
x
c
c(x,t)=exp
c
0
2
πDt

2
x
4Dt
x
D
t