subroutine est_orfdim(desdis,dia,cd) !! This program estimates orifice dimensions based on !! design discharge at different stages implicit none real, intent(in) :: cd ! | real, intent(in) :: desdis ! | real, intent(out) :: dia ! | real :: tempvar ! | real :: pi ! | pi = 3.14159 tempvar = 0.6 * cd * pi * sqrt(9.81) dia = (4.0 * desdis / tempvar) ** 0.4 return end subroutine est_orfdim