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How get Species Molecular Weight in UDF

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Old   April 14, 2007, 02:21
Default How get Species Molecular Weight in UDF
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Hi I want to write a UDF in witch I must use Species Molecular Weights (I activated species transport on Defin>Species panel). How i can get these properties in my udf. I try to use mixture_species_loop but the following error has ocdcured: ***** structure reference not implemented ******* Is there another way?? Thanks!

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Old   April 14, 2007, 18:55
Default iron rusting
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Hi, I used multiphase flow liquid liquid phase, Naphtha-water flow. Oxygen present in bulk, chemical reaction occurred at the pipe walls {2Fe + 1.5 O2 + 3 H2O --- 2Fe(OH)3 } how define this reaction and species in fluent? the oxygen consdered species transfer from bulk to wall.

anyone help me.
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