| Abstract |
Imagine a fluid flowing out from a point source into a homoisotropic When the pressure distribution is an r is radial distance from the o r i g n equilibrium one, P k the medium and the fluid volume is suppose a chemical at concentration added to the fluid at 0 for t which does not affect k and and that marker is monitored at a fixed point r, from the injection I n the absence of diffusion and dispersive mixing, the marked fluid reaches o u t to a radius r in when the volume of fluid the sphere of radius r is Qt, and the concentration of marker in the and then jumps to the input (fig. 1curve a). dispersion and or diffusion this step fraction response is replaced by gentle diffusive breadth of which depends on the dispersion and diffusion |