\large
$$
n_i  = \max (0,round({{Q_{ramplocal_i }  - Q_{LfomActual} (i,n,B_{LfomOrifice} ,D_{LfomOrifice} ,HL_{Lfom} ,Pi_{LfomH} )} \over {Q_{orifice} (D_{LfomOrifice,} B_{LfomOrifice} ,Pi_{LfomH} ,Pi_{VenaContractaOrifice} )}}
$$