Fig. 17

Comparison of streamline at 0.55 s and 1.7 s. \(\left( {V_{0} = 2\,{\text{ V}},{\text{ and }}\,{\text{f}} = 12 \,{\text{Hz}}} \right)\).
Comparison of streamline at 0.55 s and 1.7 s. \(\left( {V_{0} = 2\,{\text{ V}},{\text{ and }}\,{\text{f}} = 12 \,{\text{Hz}}} \right)\).