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A probabilistic model for correcting the directional sensitivity of optical probe measurements
Author(s) -
Lee Boung Wook,
Dudukovic Milorad P.
Publication year - 2015
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.14860
Subject(s) - probabilistic logic , sensitivity (control systems) , flow (mathematics) , bubble , biological system , statistical physics , optics , mechanics , physics , computer science , engineering , electronic engineering , artificial intelligence , biology
A probabilistic model is introduced for correcting the directional sensitivity of the optical probe technique routinely used to determine gas holdup and bubble dynamics in gas‐liquid systems. Measurements from optical probes oriented at various angles were collected from the tapered end of optical probes in regions where approximately unidirectional and bubbly flow conditions were observed. Based on logical assumptions, constitutive equations for a probabilistic model were formulated, and contributions to the overall local gas phase holdup from bubbles traveling in two opposite directions were quantified. The results demonstrate a novel and useful way to interpret optical probe measurements. © 2015 American Institute of Chemical Engineers AIChE J , 61: 3516–3527, 2015