UDS Flux Function Choice
I have two problems about UDS modeling. There are three options for UDS Flux Function: none, mass flow rate, and a user-defined function. In FLUENT User's Guide it is said that "mass flow rate" and "user-defined function" options are both used for mass flow rate calculation. Is there any advantage of the latter over the former? In my option the example of UDS flux in the UDF manual has the same function with "mass flow rate" option. If "mass flow rate" instead of "user-defined function" selected for flux function in my UDS, can flux term be calculated accurately?
Also this problem appears in UDS unsteady function, can the default option for unsteady function calculate the unsteady term accurately?
I'd appreciate your help. Thanks in advance.
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