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scales for dependent variables in laminar flow module

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Hi guys,

Scales for dependent variables:
mod1.u: 1
mod1.p: 2.3e+002
mod1.spf.Pinlinl1: 8e+007

When I apply inlet condition with normal inflow velocity, there are only mod1.u and mod1.p, so no problem.
However, with laminar inflow condition with the flow rate, mod1.spf.Pinlinl1 is generated.
Within this condition, solution time is get much longer because of increase of iteration in GMRES solver.

How can I solve this problem?
Any opinions will be welcomed^^

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