Time: 0.00 s
Concentration: 1.00 mol/L
Flux: 0.00 mol/(m²·s)
Parameters
Auto-calculated from temperature, viscosity, and particle size using D = kBT/(6πηr)
Physical Equations
Fick's First Law:
J = -D·(dc/dx)
Einstein Relation:
D = k_BT/(6πηr)
Random Walk:
dx = √(2Ddt)·ξ
Concentration Distribution:
c(x,t) = c₀/√(4πDt)·exp(-x²/4Dt)
Applications
Gas mixing in atmosphere
Perfume diffusion in air
Cellular material exchange
Dye diffusion in water
Influencing Factors
Temperature (T)
↑ → Diffusion ↑
Particle Size (r)
↑ → Diffusion ↓
Medium Viscosity (η)
↑ → Diffusion ↓
Concentration Gradient
↑ → Flux ↑