科研之友
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摘要
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.
- 出版日期2013-5-20
