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A Note on Flow Behavior in Axially-Dispersed Plug Flow Reactors with Step Input of Tracer

Huang, Yuanlong and Seinfeld, John H. (2019) A Note on Flow Behavior in Axially-Dispersed Plug Flow Reactors with Step Input of Tracer. Atmospheric Environment: X, 1 . Art. No. 100006. ISSN 2590-1621.

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Atmospheric chemistry studies are frequently conducted in flow reactors, such as the potential aerosol mass (PAM) reactor. To characterize the flow condition in such a reactor, an axially-dispersed plug flow reactor (AD-PFR) model has been applied to explain the observed residence time distribution (RTD). Compared with the traditional RTD analysis that directly fits the observed data from a pulse input or differentiates the data points from a step input, we introduce here a direct method to retrieve the axial diffusivity in an AD-PFR model by fitting an analytical formula to the rising profile of the tracer at the beginning of the experiment (the transition data before the reactor reaches steady state). This method can be readily used to determine the flow conditions inside an AD-PFR.

Item Type:Article
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URLURL TypeDescription
Huang, Yuanlong0000-0002-6726-8904
Seinfeld, John H.0000-0003-1344-4068
Additional Information:© 2019 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license ( Received 1 October 2018, Revised 3 January 2019, Accepted 5 January 2019, Available online 24 January 2019. YH acknowledges helpful discussions with I-Te Lu.
Subject Keywords:Plug flow reactor; Axial dispersion; Step injection; Residence time distribution
Record Number:CaltechAUTHORS:20190124-103511314
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Official Citation:Yuanlong Huang, John H. Seinfeld, A note on flow behavior in axially-dispersed plug flow reactors with step input of tracer, Atmospheric Environment: X, Volume 1, 2019, 100006, ISSN 2590-1621, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92448
Deposited By: Tony Diaz
Deposited On:24 Jan 2019 20:15
Last Modified:20 Feb 2019 21:44

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