.defined as the ratio of the pressure drop, DP, to the foam density, q. From Eqs. (4), (6), and (8), the SMX efficiency is expressed as: _capp E ¼ q l Ks Kp D L
.defined as the ratio of the pressure drop, DP, to the foam density,q. From Eqs. (4), (6), and (8), the SMX efficiency is expressed as:_cappE ¼qlKsKpDL