LIIM(Laser-Induced Ion Mobility) 계측을 이용한 매연 나노입자 측정

Abstract

Experimental measurements of laser-induced Ion mobility(LIIM) were performed for ethene/au premixed flames operated near the soot inception point. Soot was ionized using a pulsed laser operated at 532 nm The ionization signal was collected With a tungsten electrode located in the post-flame region Ionization signals were collected using both a single electrode and dual electrode configuration. Prior LIIM studies have focused on the use of a single biased electrode to generate the electric field, With the burner head serving as the path to ground In many practical combustion systems, a path to ground is not reachly available. To apply the LIIM diagnostic to these geometries, a dual electrode geometry must be employed The influence of electrode configuration, flame equivalence rano, and flame height on ionization signal detection was determined The efficacy of the LIIM diagnostic to detect soot Inception in the post-flame region of a premixed flame using a dual electrode configuration was investigated. For the different dual electrode configurations tested, the dual parallel electrode geometry was observed to be most sensitive to detect the soot inception point in a premixed flame.br/