ln(Yflood)=C0+C1ln(X)+C2(ln(X))2l n open paren cap Y sub f l o o d end-sub close paren equals cap C sub 0 plus cap C sub 1 l n open paren cap X close paren plus cap C sub 2 open paren l n open paren cap X close paren close paren squared (Note: are empirical constants specific to the packing geometry). The capacity parameter equation is defined as:
Designing a packed column that operates too close to flooding leads to poor performance and high pressure drop. Always design with an adequate safety margin.