Thermal Physics - Rod in Cylinder - Solve thermal problem - Сообщения
#1 Опубликовано: 30.01.2018 15:40:39
I have another MC sheet I'm working on in SMATH. I am not certain how to solve for/ replace the "Find" solver in MC. Attached is my worksheet and the pdf of the Prime MC sheet.
I welcome any help to solve this.
Thank you,
I welcome any help to solve this.
Thank you,
#2 Опубликовано: 30.01.2018 21:02:26
This can be one of the solutions.
The "T" in the formula can be easily isolated.
Thermal Physics - Rod in Cylinder_R1.sm
Best Regards
Carlos
The "T" in the formula can be easily isolated.
Thermal Physics - Rod in Cylinder_R1.sm
Best Regards
Carlos
#3 Опубликовано: 31.01.2018 01:46:31
This can be one of the solutions.
The "T" in the formula can be easily isolated.
Well done Carlos,
I think it can be plotted directly on the canvas
Will try tomorrow [tonight, I'm dead... not completely !]
Jean
#4 Опубликовано: 31.01.2018 02:43:54
I think it can be plotted directly on the canvas
Will try tomorrow
roots(,,) solve on the canvas.
Next matter is the unit system to be adapted,
unfortunately incompetent on that !
#5 Опубликовано: 31.01.2018 05:24:21
Not nearly as nice as your Mathcad sheet...
Uses the symbolic solver in Maxima. You have to select one of the four solutions, I guess the
real positive one is correct.
Thermal%20Physics%20-%20Rod%20in%20Cylinder_Kr.sm
![2018-01-30 22_02_41-SMath Studio 0.98.6598 - [Thermal%20Physics%20-%20Rod%20in%20Cylinder.sm_].png](/ru-RU/file/sApQSb/2018-01-30-22_02_41-SMath-Studio-0_98_6598---_Thermal_20Physics_20-_20Rod_20in_20Cylinder_sm___png)
Uses the symbolic solver in Maxima. You have to select one of the four solutions, I guess the
real positive one is correct.
Thermal%20Physics%20-%20Rod%20in%20Cylinder_Kr.sm
Martin Kraska
Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx
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#6 Опубликовано: 31.01.2018 10:54:01
Thank you, all, for your help. I'll look closer at the solutions presented; learning more about SMATH.
Martin, I get a message opening your sheet looking for "Maxima.bat". Is this in a plugin that I need to download? Your sheet presents the following message: "Initializing error. Please reinitialize under settigs."
Norm
Martin, I get a message opening your sheet looking for "Maxima.bat". Is this in a plugin that I need to download? Your sheet presents the following message: "Initializing error. Please reinitialize under settigs."
Norm
#7 Опубликовано: 31.01.2018 11:34:41
Please follow the link in my signature, there you find instructions how to install Maxima (a free CAS system) and how to tell SMath where to find it.
Martin Kraska
Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx
#8 Опубликовано: 31.01.2018 12:46:11
Try this in stricly Smath ... done 6179.
Very interesting, but missing the physical drawing !!!
Solve Maple Thermal Physics.sm
Very interesting, but missing the physical drawing !!!
Solve Maple Thermal Physics.sm
#9 Опубликовано: 31.01.2018 13:25:11
#10 Опубликовано: 31.01.2018 14:18:07
Hi. In the attached, just numerical methods, and how to parametrize the solver, like Mathcad find solve blocks.
Best regards.
Alvaro.
Thermal Physics - Rod in Cylinder.sm
Best regards.
Alvaro.
Thermal Physics - Rod in Cylinder.sm
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Fridel Selitsky 31.01.2018 15:11:00
#11 Опубликовано: 31.01.2018 15:18:10
Carlos, Jean, Martin and Alvaro, many thanks! Your support is superb!
There's a lot here for me to digest.
Norm
There's a lot here for me to digest.
Norm
#12 Опубликовано: 31.01.2018 19:40:41
Carlos, Jean, Martin and Alvaro, many thanks! Your support is superb!
There's a lot here for me to digest.
Norm
Norm,
observe closely your function ... it has rational format.
It suggests that a rational model would fit the data set.
Isn't true looking at the fit from a 4 terms rational.
The red and green traces from Carlos would be as easy, not done.
Please, don't forget the physical drawing.
You could do the very same in Mathcad.
Jean
Maths Thermal Physics - Rod in Cylinder_R2.sm
#13 Опубликовано: 31.01.2018 21:26:44
Yet another one without using for-loops and using both [Built-in Plot] and [X-Y Plot Plugin].
God I really don't like to look at those for-loops, thanks to Andrey I will avoid them as much as I can. (Smath Studio 0.98.6604)
Thermal Physics - Rod in Cylinder_R3.sm
God I really don't like to look at those for-loops, thanks to Andrey I will avoid them as much as I can. (Smath Studio 0.98.6604)
Thermal Physics - Rod in Cylinder_R3.sm
#14 Опубликовано: 01.02.2018 00:46:42
God I really don't like to look at those for-loops, thanks to Andrey I will avoid them as much as I can.
Not backward compatible ... maybe a bug ?
I welcomed that feature as it was announced. And reattached Mandelbroth,
no answer from Designers ... maybe not so gorgeous as you pretend.
#15 Опубликовано: 01.02.2018 01:18:17
As I say before, this is a general numeric setup.
Best regards.
Alvaro.Thermal Physics - Rod in Cylinder.sm
Best regards.
Alvaro.Thermal Physics - Rod in Cylinder.sm
#16 Опубликовано: 01.02.2018 02:36:46
As I say before, this is a general numeric setup.
Alvaro,
Your original [previous] is a gorgeous piece of work.
Just needed be doctored a bit. It might be compacted.
Jean
Maths Thermal Physics - Rod in Cylinder_R2 [Alvaro].sm
#17 Опубликовано: 01.02.2018 03:41:35
God I really don't like to look at those for-loops, thanks to Andrey I will avoid them as much as I can.
Not backward compatible ... maybe a bug ?
I welcomed that feature as it was announced. And reattached Mandelbroth,
no answer from Designers ... maybe not so gorgeous as you pretend.
It shouldn't work before 6580, using range like this is introduced with this verison as far as I remember. This is why I have written the Smath version I used. Anyway, below you can see how it looks. Still I think it looks better then for-loops.
Regards
#18 Опубликовано: 01.02.2018 04:21:55
Hi Jean.
The point about MAXITERS is to figure after the root function body, not before in such way that you can change it like TOL in Mathcad.
Also notice that in your worksheet you don't call the function Bisection defined there, but the function Bisection from the Nonlinear solvers plugin.
Best regards.
Alvaro.
The point about MAXITERS is to figure after the root function body, not before in such way that you can change it like TOL in Mathcad.
Also notice that in your worksheet you don't call the function Bisection defined there, but the function Bisection from the Nonlinear solvers plugin.
Best regards.
Alvaro.
#19 Опубликовано: 01.02.2018 04:41:33
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Hello,
Sooner or later, this way or another - one will end up by using some nonlinear solvers.
Regards,
Radovan
Sooner or later, this way or another - one will end up by using some nonlinear solvers.
Regards,
Radovan
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
#20 Опубликовано: 01.02.2018 11:32:21
It shouldn't work before 6580, using range like this is introduced with this verison as far as I remember. This is why I have written the Smath version I used. Anyway, below you can see how it looks. Still I think it looks better then for-loops.
I love for-loops !
1. with units => "Matrix must be square"
2. w/o units => "Can not calculate"
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