Fig. 9.
(a(i)), (a(ii)) and (a(iii)) are the electric potential profiles represented by equipotential lines in the CFD domain containing the cone-jet and droplet breakup based on nozzle voltages of 5.0, 5.5 and 5.6 kV, respectively. (b(i)) to (b(iii)) and (c(i)) to (c(iii)) are the electric field strength profiles before and after cone-jet formation based on nozzle voltages of 5.0 to 5.6 kV, respectively. In all cases, the core/shell flow rates (1.0/3.5 ml/h) and the nozzle-to-collector distance (15 cm) are maintained.