3-D unsteady convection diffusion equation

the unsteady Stokes equation

one speed diffusion equation

one dimensional diffusion equation

nonlinear reaction diffusion equation

NONLINEAR DIFFUSION EQUATION

non-equilibrium diffusion equation

non-classical diffusion equation

non equilibrium diffusion equation

neutron diffusion equation

microscopic diffusion equation

inverse diffusion equation

incremental diffusion equation

higher order diffusion equation

Goldstein’s turbulence diffusion equation