Here we present a computational and experimental fluid dynamics study for the characterization of the flow field within the gas chamber of a Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) sensor, at different flow rates at the inlet of the chamber. The transition from laminar to turbulent regime is ruled both by the inlet flow conditions and dimension of the gas chamber. The study shows how the distribution of the flow field in the chamber can influence the QEPAS sensor sensitivity, at different operating pressures. When turbulences and eddies are generated within the gas chamber, the efficiency of photoacoustic generation is significantly altered.

Effect of gas turbulence in quartz-enhanced photoacoustic spectroscopy: A comprehensive flow field analysis / Zifarelli, Andrea; Negro, Giuseppe; Mongelli, Lavinia A.; Sampaolo, Angelo; Ranieri, Ezio; Dong, Lei; Wu, Hongpeng; Patimisco, Pietro; Gonnella, Giuseppe; Spagnolo, Vincenzo. - In: PHOTOACOUSTICS. - ISSN 2213-5979. - ELETTRONICO. - 38:(2024). [10.1016/j.pacs.2024.100625]

Effect of gas turbulence in quartz-enhanced photoacoustic spectroscopy: A comprehensive flow field analysis

Zifarelli, Andrea;Mongelli, Lavinia A.;Sampaolo, Angelo;Ranieri, Ezio;Patimisco, Pietro;Spagnolo, Vincenzo
2024-01-01

Abstract

Here we present a computational and experimental fluid dynamics study for the characterization of the flow field within the gas chamber of a Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) sensor, at different flow rates at the inlet of the chamber. The transition from laminar to turbulent regime is ruled both by the inlet flow conditions and dimension of the gas chamber. The study shows how the distribution of the flow field in the chamber can influence the QEPAS sensor sensitivity, at different operating pressures. When turbulences and eddies are generated within the gas chamber, the efficiency of photoacoustic generation is significantly altered.
2024
Effect of gas turbulence in quartz-enhanced photoacoustic spectroscopy: A comprehensive flow field analysis / Zifarelli, Andrea; Negro, Giuseppe; Mongelli, Lavinia A.; Sampaolo, Angelo; Ranieri, Ezio; Dong, Lei; Wu, Hongpeng; Patimisco, Pietro; Gonnella, Giuseppe; Spagnolo, Vincenzo. - In: PHOTOACOUSTICS. - ISSN 2213-5979. - ELETTRONICO. - 38:(2024). [10.1016/j.pacs.2024.100625]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/270840
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