title: Gas phase thermometry of hot turbulent jets using laser induced phosphorescence.
abstract: The temperature distributions of heated turbulent jets of air were determined using two dimensional (planar) laser induced phosphorescence. The jets were heated to specific temperature increments, ranging from 300 - 850 K and several Reynolds numbers were investigated at each temperature. The spectral ratio technique was used in conjunction with thermographic phosphors BAM and YAG:Dy, individually. Single shot and time averaged results are presented as two dimensional stacked images of turbulent jets. YAG:Dy did not produce a high enough signal for single shot measurements. The results allowed for a direct comparison between BAM and YAG:Dy, revealing that BAM is more suitable for relatively lower temperature, fast and turbulent regimes and that YAG:Dy is more suited to relatively higher temperature, steady flow situations.
authors.affiliation: Department of Mechanical Engineering Brunel University, Uxbridge, Middlesex UB8 3PH, UK.
authors.forename: Martin
authors.initials: M
authors.lastname: Lawrence
authors.forename: Hua
authors.initials: H
authors.lastname: Zhao
authors.forename: Lionel
authors.initials: L
authors.lastname: Ganippa
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005740:Gases / Q000032:analysis* / Q000737:chemistry*; D007834:Lasers; D008163:Luminescent Measurements / Q000295:instrumentation*; D044367:Phase Transition; D012031:Refractometry / Q000295:instrumentation*; D012212:Rheology / Q000295:instrumentation*; D013817:Thermography / Q000295:instrumentation*
chemical_list: D005740:Gases