▁L / D c ▁= ▁- ▁ ▁l / D c ▁= ▁ 1 / 2 ▁▁ ℓ / D c ▁= ▁ 1 / 3 ▁ ▁Th eta ▁= ▁ 9 ▁degrees ▁ ▁Us es ▁▁ ▁A ▁hydro cy clone ▁is ▁most ▁often ▁used ▁to ▁separate ▁" he av ies " ▁from ▁a ▁liquid ▁mixture ▁origin ating ▁at ▁a ▁cent rif ug al ▁p ump ▁or ▁some ▁other ▁continuous ▁source ▁of ▁press ur ized ▁liquid , ▁or ▁two - phase ▁( gas - liqu id ) ▁systems . ▁A ▁hydro cy clone ▁is ▁most ▁likely ▁to ▁be ▁the ▁right ▁choice ▁for ▁processes ▁where ▁" light s " ▁are ▁the ▁greater ▁part ▁of ▁the ▁mixture ▁and ▁where ▁the ▁" he av ies " ▁sett le ▁fairly ▁easily . ▁ ▁Gener ally , ▁hydro cy cl ones ▁are ▁used ▁in ▁continuous ▁flow ▁systems ▁so ▁that ▁the ▁instant aneous ▁liquid ▁in flow ▁to ▁the ▁hydro cy clone ▁is ▁equal ▁to ▁the ▁total ▁instant aneous ▁out flow ▁of ▁" light s " ▁plus ▁" he av ies ". ▁In ▁cases ▁where ▁" he av ies " ▁are ▁a ▁very ▁small ▁part ▁of ▁the ▁whole ▁liquid , ▁it ▁is ▁sometimes ▁advantage ous ▁to ▁accum ulate ▁them ▁in ▁the ▁bottom ▁of ▁the ▁hydro cy clone ▁for ▁batch wise ▁removal . ▁ ▁App lications ▁include : ▁▁ ▁In ▁the ▁pot ato , ▁c ass ava , ▁whe at ▁and ▁corn ▁st arch ▁industry ▁for ▁both ▁concentration ▁and ▁was hing ▁of ▁the ▁cru de ▁st arch ▁milk . ▁H ydro