Equation for calculating values?

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After the calculation with the solid and fluid heat transfer module, the values of internal energy and total internal energy can be derived directly, that is, ht Ei and ht Ei0. What is the difference between the two values? Or is there any equation to refer to?


5 Replies Last Post May 12, 2022, 3:48 p.m. EDT
Edgar J. Kaiser Certified Consultant

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Posted: 2 weeks ago May 11, 2022, 12:11 p.m. EDT

ht.Ei - ht.Ei0

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
ht.Ei - ht.Ei0

Jeff Hiller COMSOL Employee

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Posted: 2 weeks ago May 11, 2022, 1:42 p.m. EDT
Updated: 2 weeks ago May 11, 2022, 2:10 p.m. EDT

You can find the mathematical definitions for all quantities in your model by turning on Equation View (You can activate it by clicking the "Show More Options" icon, which looks like an eye and is located at the top of the Model Builder window) and then using Ctrl+R. See this other thread for a bit more detail.

Jeff

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Jeff Hiller
You can find the mathematical definitions for all quantities in your model by turning on Equation View (You can activate it by clicking the "Show More Options" icon, which looks like an eye and is located at the top of the Model Builder window) and then using Ctrl+R. See [this other thread](https://www.comsol.com/forum/thread/45363/variable-names-in-equation-view?last=2022-04-28T15:29:32Z) for a bit more detail. Jeff

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Posted: 2 weeks ago May 12, 2022, 2:49 a.m. EDT

ht.Ei - ht.Ei0

I do not understand

>ht.Ei - ht.Ei0 I do not understand

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Posted: 2 weeks ago May 12, 2022, 3:26 a.m. EDT
Updated: 2 weeks ago May 12, 2022, 3:51 p.m. EDT

You can find the mathematical definitions for all quantities in your model by turning on Equation View (You can activate it by clicking the "Show More Options" icon, which looks like an eye and is located at the top of the Model Builder window) and then using Ctrl+F. See this other thread for a bit more detail.

Jeff

Thanks!

>You can find the mathematical definitions for all quantities in your model by turning on Equation View (You can activate it by clicking the "Show More Options" icon, which looks like an eye and is located at the top of the Model Builder window) and then using Ctrl+F. See [this other thread](https://www.comsol.com/forum/thread/45363/variable-names-in-equation-view?last=2022-04-28T15:29:32Z) for a bit more detail. > >Jeff Thanks!

Edgar J. Kaiser Certified Consultant

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Posted: 2 weeks ago May 12, 2022, 3:48 p.m. EDT

ht.Ei - ht.Ei0

I do not understand

This is the expression you can use to evaluate and/or plot the difference of the two quantities

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
>>ht.Ei - ht.Ei0 > >I do not understand This is the expression you can use to evaluate and/or plot the difference of the two quantities

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