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Applying a temperature varying with time

Posted 13 juin 2021, 10:04 UTC−4 Fluid & Heat, Heat Transfer & Phase Change Version 5.6 2 Replies

Zeus
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Hi I have modeled a bottle with water inside and I want to apply a temperature at the bottom of the bottle which varies with time. I have made a table with temperature vs time.

How do I apply this as a temperature load?

2 Replies Last Post 16 juin 2021, 05:34 UTC−4
Magnus Ringh COMSOL Employee

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Posted: 4 years ago 14 juin 2021, 07:22 UTC−4
Updated: 4 years ago 14 juin 2021, 07:23 UTC−4

Hi,

This is straightforward. Define the table as a Interpolation function with seconds as the input argument and kelvin as the output (function) argument. If the function is called temp_vs_time, for example, enter it as the temperature in the Temperature node that is active at the bottom of the bottle as temp_vs_time(t).

Best regards,

Magnus Ringh

Hi, This is straightforward. Define the table as a Interpolation function with seconds as the input argument and kelvin as the output (function) argument. If the function is called `temp_vs_time`, for example, enter it as the temperature in the **Temperature** node that is active at the bottom of the bottle as `temp_vs_time(t)`. Best regards, Magnus Ringh
Zeus
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Posted: 4 years ago 16 juin 2021, 05:34 UTC−4
Updated: 4 years ago 16 juin 2021, 05:38 UTC−4

Do I define a function under Defintions? If so, when I enter my function name as you stated (e.g. temp_vs_time(t)) I get a yellow highligh stating that its an unexpected unit of input.

EDIT: Never mind I forgot the units...

Do I define a function under Defintions? If so, when I enter my function name as you stated (e.g. temp_vs_time(t)) I get a yellow highligh stating that its an unexpected unit of input. EDIT: Never mind I forgot the units...

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