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plot 1d integral

Posted 7 janv. 2019, 02:43 UTC−5 General, Results & Visualization 5 Replies

Xiaochao Xu
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I have a 2d solution to a PDE and I would like to integrate in y-direction from 0 to 1 and plot the integrated results again x. I am new to Comsol. I thought this should be rather easy to do. However, I could not figure out how to do this. The line integral function of Comsol requires to specify a line first. While I do have lines, but I need many of them. I guess some programming can do this. Is there an easier way than that?

5 Replies Last Post 8 janv. 2019, 05:35 UTC−5
Jeff Hiller COMSOL Employee

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Posted: 6 years ago 7 janv. 2019, 09:09 UTC−5

Hello Xiaochao,

You can achieve this using a projection component coupling, see Rerence Guide for COMSOL Multiphysics, version 5.4, page 316 and following, and in particular the example at the top of page 320.

Best regards,

Jeff

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Jeff Hiller
Hello Xiaochao, You can achieve this using a projection component coupling, see Rerence Guide for COMSOL Multiphysics, version 5.4, page 316 and following, and in particular the example at the top of page 320. Best regards, Jeff
Xiaochao Xu
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Posted: 6 years ago 7 janv. 2019, 16:14 UTC−5

I see the examples. But it does not show how this is actually used in the contexts. Could you please point me to a vedio (at what time it is used and at what time I should start watching)? Thanks.

I see the examples. But it does not show how this is actually used in the contexts. Could you please point me to a vedio (at what time it is used and at what time I should start watching)? Thanks.
Jeff Hiller COMSOL Employee

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Posted: 6 years ago 7 janv. 2019, 16:38 UTC−5
Updated: 6 years ago 7 janv. 2019, 16:40 UTC−5

I don't know of any ready-made video on this specific topic, but I built for you the attached toy model that illustrates the basic operation of this feature. The underlying PDE I am solving is the heat transfer in solids equation, which gives me a temperature distribution T. The plot of the integral with respect with y of T is plotted in 1D Plot Group 3's Line Graph 1.

Should you need further assistance with this, please contact our support team at support@comsol.com .

Best,

Jeff

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Jeff Hiller
I don't know of any ready-made video on this specific topic, but I built for you the attached toy model that illustrates the basic operation of this feature. The underlying PDE I am solving is the heat transfer in solids equation, which gives me a temperature distribution T. The plot of the integral with respect with y of T is plotted in 1D Plot Group 3's Line Graph 1. Should you need further assistance with this, please contact our support team at support@comsol.com . Best, Jeff

Attachments:

Xiaochao Xu
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Posted: 6 years ago 7 janv. 2019, 20:02 UTC−5

I cannot open your file. Do you have it for version 5.3a? Thanks.

I cannot open your file. Do you have it for version 5.3a? Thanks.
Jeff Hiller COMSOL Employee

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Posted: 6 years ago 8 janv. 2019, 05:35 UTC−5
Updated: 6 years ago 8 janv. 2019, 15:59 UTC−5

I cannot offer to post models in other versions than the current one. Please consider updating your installation.

Jeff

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Jeff Hiller
I cannot offer to post models in other versions than the current one. Please consider updating your installation. Jeff

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