Different between species and UDS? -- CFD Online Discussion Forums

April 5, 2013, 10:09	Different between species and UDS?	#1
cinwendy Member Join Date: Feb 2013 Posts: 31 Rep Power: 13	Hi, I want to simulate some tracer/reactant. I used species transport and got some results. Now I am looking at UDS, and I get different results. I have a species with properties of pure water (by specifying mass fraction) and a UDS also with diffusivity of water (by specifying value at boundary). These two looks the same for me, so I was expecting I will get the same results. How are they differ from each other? Thanks a lot in advance!

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