Average cake concentration by volume fraction
Also varies as a function of cake forming pressure:
The two constants ‘u’ and Co are found experimentally. Under appropriate conditions, they may also be obtained from the ‘look-up table’:
http://www.filtration-and-separation.com/filter-table.htm
N.B. this is the cake concentration by volume fraction - we now need to relate this to the dry cake mass per unit volume filtrate that is used in the cake filtration equation.