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09-13-2018 09:09 AM

I built up a coupled flow and thermal analysis model on an electronic assembly using NX 11 and Simcenter Thermal/Flow Solver (Solution Type: Steady State). Calculated temperature results seem reasonable to me, but it would also be interesting to see how long it takes to reach steady state conditions. Is there a way to look up the time necessary to reach steady state conditions directly from a steady state solution?

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Re: NX Thermal-Flow Time to reach steady state temperatures

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09-13-2018 10:21 AM

Re: NX Thermal-Flow Time to reach steady state temperatures

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09-13-2018 10:41 AM - edited 09-13-2018 11:02 AM

Re: NX Thermal-Flow Time to reach steady state temperatures

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09-13-2018 11:26 AM

Yes, it is necessary to run a transient analysis to determine the time needed to reach steady state.

A steady state solution is simpler/faster because transient terms have been removed. As indicated in the previous response, this is a fundamental assumption. As such, a steady state analysis cannot give any type of time estimate.

Re: NX Thermal-Flow Time to reach steady state temperatures

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09-17-2018 09:06 AM - edited 09-17-2018 09:36 AM

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09-17-2018 09:53 AM

See Continue a transient solution in the online help

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