pde in SMath

pde in SMath - Can we solve it in SMath - Сообщения

#1 Опубликовано: 05.07.2023 14:43:37
Valery Ochkov

Valery Ochkov

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We heated the rod in the flame of a burner.
How will it cool down?
Non-stationary mode!
One stationary mode here https://en.smath.com/forum/yaf_postst23506_Cannot-plot-T-x--y.aspx
pde-MC-15.png
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dhoskins 05.07.2023 15:08:00
#2 Опубликовано: 05.07.2023 19:58:43
Alvaro Diaz Falconi

Alvaro Diaz Falconi

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Hi.

Clipboard01.png

Best regards
Alvaro.
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Valery Ochkov 05.07.2023 23:01:00
#3 Опубликовано: 05.07.2023 23:02:44
Valery Ochkov

Valery Ochkov

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Wrote

Hi.

Clipboard01.png

Best regards
Alvaro.



Thanks!
And what about the ICs?
We must use one numeric not symbolic method!
#4 Опубликовано: 06.07.2023 06:51:41
Jean Giraud

Jean Giraud

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For your data set D ... 3 options:
1. Smath ainterp, cinterp ...integrate/solve(4)/zap derivative.
2. Mathcad l_p_c implemented Smath [1rst derivative, integration]
3. Thiele Smath ... symbolic derivative, integration.
If you have interest in methods [2,3] I will attach.
Since nearly ~ two weeks, Smath Studio can't be downloaded.
Replaced by Smath Solver ... a damned crippled version.
Cheers ... Jean.
#5 Опубликовано: 06.07.2023 07:22:21
Valery Ochkov

Valery Ochkov

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Wrote

For your data set D ... 3 options:
1. Smath ainterp, cinterp ...integrate/solve(4)/zap derivative.
2. Mathcad l_p_c implemented Smath [1rst derivative, integration]
3. Thiele Smath ... symbolic derivative, integration.
If you have interest in methods [2,3] I will attach.
Since nearly ~ two weeks, Smath Studio can't be downloaded.
Replaced by Smath Solver ... a damned crippled version.
Cheers ... Jean.



Thanks!
I would like as here
https://en.smath.com/forum/yaf_postst23506_Cannot-plot-T-x--y.aspx

#6 Опубликовано: 06.07.2023 09:53:10
Jean Giraud

Jean Giraud

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Wrote

Thanks!
I would like as here



Thiele_0 Model QUICK.sm (24 КиБ) скачан 26 раз(а).
Maths EDU [l_p_c_splines TOOLBOX] Copy.sm (584 КиБ) скачан 30 раз(а).

These two documents are SS 6179.
Please, confirm you can open.

#7 Опубликовано: 06.07.2023 14:33:10
Alvaro Diaz Falconi

Alvaro Diaz Falconi

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... And what about the ICs?
We must use one numeric not symbolic method!



Using maple, you can try to use a maple "component" or a maple plot, which gives more flexible access to maple structured functions.

Also, there are some numerical procedures for pde's in Maxima.

Notice that in Mathcad the border conditions for δT(x,t)/δx are not considered for obtain the solution.

Clipboard2.png

With SMath, you can try to adjust the curve choosing good guess values in the yellow vector.

Clipboard1.png

pdesol_num.sm (14 КиБ) скачан 28 раз(а).

Best regards.
Alvaro.
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