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Modelling species transport and implementing reaction rates |
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May 11, 2017, 11:29 |
Modelling species transport and implementing reaction rates
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Rodica - Elisabeta
Join Date: Sep 2016
Location: Denmark
Posts: 5
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Dear all,
I am working on implementing a photocatalytic oxidation reaction in Fluent, where a species (here ethylene) is oxidized over a TiO2 surface. Globally, the reaction is: C2H4 + 3O2 --> 2CO2 + 2H2O which follows a so-called Langmuir-Hinshelwood reaction rate expression: r = k*K*[C2H4]/(1+K[C2H4]) where k and K are constants. From my understanding I should include this reaction rate as a source (sink) term in the transport equation of the species to account for the disappearance of species. Should I use a UDS for the transport of ethylene, which should have as a source term the UDF that defines the reaction rate? Since I am new to UDFs/UDSs, could someone guide me through the process, at least in the grand scheme of things, which steps I should follow, what and where to define, how to set up a UDS for the transport of species... Any help is appreciated! Thank you so much! |
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reaction rate, transport of species, udf, uds |
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