The effect of DC electric fields on the stabilization of the laminar premixed jet flames has been investigated with ground-mesh and in single-electrode configuration. The detachment velocities were measured by varying the applied positive and negative...
The effect of DC electric fields on the stabilization of the laminar premixed jet flames has been investigated with ground-mesh and in single-electrode configuration. The detachment velocities were measured by varying the applied positive and negative DC voltage at various distance of ground-mesh. The detachment velocity was increased and decreased with the magnitude of negative and positive DC voltage, respectively. As compared to the case of single-electrode configuration, the effect of DC voltage on the variation of detachment velocity with ground-mesh was appreciable. The variation of detachment velocity of premixed jet flame was well correlated by the representative strength of DC electric fields. It was observed that the effect of negative DC electric fields is larger than that of positive field. With qualitative evaluation of electric field, it was shown that the strength exerted on flame zone for negative DC source could be larger than that of for positive one. Consequently, the changes of detachment velocity with variation of applied DC voltage, distance of ground-mesh, and polarity of DC source were explained by the evaluated electric field strength.