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Scalar transport in a milli-scale metal foam reactor

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Title: Scalar transport in a milli-scale metal foam reactor
Authors: Hutter, C.1, Allemann, C.1, Kuhn, S.1, Rudolf von Rohr, Ph. vonrohr@ipe.mavt.ethz.ch
Source: Chemical Engineering Science. May2010, Vol. 65 Issue 10, p3169-3178. 10p.
Subjects: Scalar field theory, Metal foams, Mass transfer, Reynolds number, Mixing
Abstract: Abstract: We present an investigation on species mass transfer in a milli-scale plug flow reactor using metal foams to enhance the mixing process. In the current design the reactor consists of a pipe with an inner diameter of 7mm and metal foam inserts with different pore sizes of 20, 30 and 45ppi. Simultaneous PIV and LIF measurements were performed in orthogonal planes normal to the radial and axial direction downstream of a foam element of 50mm length. The investigated Reynolds numbers range from 600 to 7600 defined with the empty tube diameter and the bulk velocity. We discuss the influence of the pore sizes on the scalar mixing efficiency and compare the results to the reference empty tube case. A strongly intermittent flow caused by the metal foam was observed over the whole range of Reynolds numbers. The increased radial velocities lead to an enhanced mixing performance. Coefficients of Variation in the order of 0.1 were achieved. [Copyright &y& Elsevier]
Copyright of Chemical Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 49823146
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Scalar transport in a milli-scale metal foam reactor
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  Data: <searchLink fieldCode="AR" term="%22Hutter%2C+C%2E%22">Hutter, C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Allemann%2C+C%2E%22">Allemann, C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kuhn%2C+S%2E%22">Kuhn, S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rudolf+von+Rohr%2C+Ph%2E%22">Rudolf von Rohr, Ph.</searchLink><i> vonrohr@ipe.mavt.ethz.ch</i>
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  Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+Science%22">Chemical Engineering Science</searchLink>. May2010, Vol. 65 Issue 10, p3169-3178. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Scalar+field+theory%22">Scalar field theory</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+foams%22">Metal foams</searchLink><br /><searchLink fieldCode="DE" term="%22Mass+transfer%22">Mass transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Reynolds+number%22">Reynolds number</searchLink><br /><searchLink fieldCode="DE" term="%22Mixing%22">Mixing</searchLink>
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  Data: Abstract: We present an investigation on species mass transfer in a milli-scale plug flow reactor using metal foams to enhance the mixing process. In the current design the reactor consists of a pipe with an inner diameter of 7mm and metal foam inserts with different pore sizes of 20, 30 and 45ppi. Simultaneous PIV and LIF measurements were performed in orthogonal planes normal to the radial and axial direction downstream of a foam element of 50mm length. The investigated Reynolds numbers range from 600 to 7600 defined with the empty tube diameter and the bulk velocity. We discuss the influence of the pore sizes on the scalar mixing efficiency and compare the results to the reference empty tube case. A strongly intermittent flow caused by the metal foam was observed over the whole range of Reynolds numbers. The increased radial velocities lead to an enhanced mixing performance. Coefficients of Variation in the order of 0.1 were achieved. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Chemical Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ces.2010.02.002
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        Text: English
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      – SubjectFull: Mass transfer
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              Text: May2010
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