Spatiotemporal Surface Temperature Measurements Resolving Flame-Wall Interactions of Lean H<sub>2</sub>-Air and CH<sub>4</sub>-Air Flames Using Phosphor Thermometry.
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ABSTRACT: Spatiotemporal wall temperature (Twall) distributions resulting from flame-wall interactions of lean H2-air and CH4-air flames are measured using phosphor thermometry. Such measurements are important to understand transient heat transfer and wall heat flux associated with various flame features. This is particularly true for hydrogen, which can exhibit a range of unique flame features associated with combustion instabilities. Experiments are performed within a two-wall passage, in an optically accessible chamber. The phosphor ScVO4:Bi3+ is used to measure Twall in a 22 × 22 mm2 region with 180 µm/pixel resolution and repetition rate of 1 kHz. Chemiluminescence imaging is combined with phosphor thermometry to corre
SUBMITTER: Ojo AO
PROVIDER: S-EPMC11561046 | biostudies-literature | 2024
REPOSITORIES: biostudies-literature
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