In fluid dynamics, the Graetz number (Gz) characterizes laminar flow in a conduit. It is expressed as:

In mass transfer, it is the ratio of momentum diffusivity to mass diffusivity.

In fluid dynamics, the Graetz number (Gz) characterizes laminar flow in a conduit. It is expressed as:

In mass transfer, it is the ratio of momentum diffusivity to mass diffusivity.

Categories: G