Lifetime-based phosphor thermometry for global heat flux measurement in a hypersonic rarefied tunnel under strong background radiation

Weilun Cheng,Yongzeng Li,Xu Liu,Yingzheng Liu,Di Peng

Experimental Thermal and Fluid Science（2023）

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Abstract

•Lifetime phosphor thermometry was implemented in a rarefied tunnel at Ma = 10.•Strong radiation with random spatial and temporal distributions was corrected.•In situ calibration method showed best performance for heat flux calculation.•Global heat flux distribution reveals fine flow features on the model with tail-fin.

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Key words

Phosphor thermometry,Hypersonic flow,Background radiation,Heat flux

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