Configuration

Eccentricity of the Swirling Air flow e = s/R

Comments

No Electrodes

0

Velocity profiles are almost perfectly axisymmetric. Center of swirling airflow coincides with the centerline of flame tube.

Two electrodes (Normal Configuration)

0.184

Large departure from axisymmetry

Center of swirling airflow shifted by 0.31" from the centerline of the flame tube.

Four Electrodes

0.065

Reduces flow distortion by a factor of 2 when compared to the two electrode case.

Center of swirling airflow shifted by 0.11" from the centerline of the flame tube