define effective permeability
effective permeability. (physical chemistry). The observed permeability exhibited by a porous medium to one fluid phase when there is physical interaction between this phase and other fluid phases present.1  Facebook.2  Twitter.ffective permeability. (physical chemistry). The observed permeability exhibited by a porous medium to one fluid phase when there is physical interaction between this phase and other fluid phases present. 1  Facebook. 2  Twitter.