User Defined Scalar (UDS) vs Species transport

granzer · September 15, 2019, 04:14

What is the difference between UDS and species transport in Fluent?. I know UDS is for a passive scalar and species transport can simulate the chemical reaction during flow. So what is the difference between UDS and scalar transport without chemical reaction?

granzer · November 17, 2019, 08:00

As I have come to understand: User Defined Scalars(UDS) are used for passive scalar transport and Species Transport are used for Active scalar transport
Ref
1) Passive scalar
2) difference active/passive scalar

September 15, 2019, 04:14	User Defined Scalar (UDS) vs Species transport	#1
granzer Senior Member Mandeep Shetty Join Date: Apr 2016 Posts: 188 Rep Power: 10	What is the difference between UDS and species transport in Fluent?. I know UDS is for a passive scalar and species transport can simulate the chemical reaction during flow. So what is the difference between UDS and scalar transport without chemical reaction?

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November 17, 2019, 08:00		#2
granzer Senior Member Mandeep Shetty Join Date: Apr 2016 Posts: 188 Rep Power: 10	As I have come to understand: User Defined Scalars(UDS) are used for passive scalar transport and Species Transport are used for Active scalar transport Ref 1) Passive scalar 2) difference active/passive scalar