Maple Flow 2023 Questions and Posts

These are Posts and Questions associated with the product, Maple Flow 2023

I am stuck this command works seemlessly in Maple:

ThermophysicalData:-CoolProp:-Property(D, T = 20*Unit('degC'), P = 760*Unit('mmHg'), water)

but it does not work in Maple Flow. Does anyone knows why? Thank you so much for your help in the matter.

I learnt that MapleFlow (MF) was a product similar (and better) than MathCad (MC). I have a old copy of MC, v.11 (with Maple symbolic engine) and I compared it with MF from my engineering dep. 

Can one kindly explain why Sum of a simple Matrix does not work, if the index is placed as exponent? Here what I did:

I am new to Maple Flow and am constantly having issues like the one shown below. A cell will become corrupted somehow, and the kernel will crash or freeze. I can save and quit, but if I re-open the file, the crash will happen again before I can diable evaluation. My questions:

  1. Has anyone else had this issue? Was it solvable?
  2. Can evaluation be disabled by default? Its possible in Maple but I don't see how in Flow.
  3. Can the kernel be restarted and reconnected (like Jupyter Lab)?

I cant expand the cell in question because of the crash, but this cell isn't the issue. This is happening all the time.

Thanks in advance


Time is running out for users of Mathcad® 15 worksheets.
Engineers who need to retain their historical Mathcad project files are faced with a looming deadline to move the content to another file format.

The good news is that Mathcad 15 users can turn to Maple Flow as an effective replacement design calculation tool. Maple Flow is an advanced calculation tool with a free-form layout that makes it easy for engineers to brainstorm, develop, and document their project designs.

Maplesoft now has an efficient migration solution for moving critical Mathcad content to Maple Flow worksheets. This gives engineers a path to safeguard their critical reference designs, mathematical analyses, and engineering test results.

Why are engineers moving from Mathcad 15?
In 2025, some changes are expected that will severely restrict access to Mathcad 15 software. Here’s some background:

  • PTC announced that Mathcad 15 is end-of-sale effective December 2021, restricting license activations for new users.
  • Those existing Mathcad 15 customers who bought multiyear license extensions will see them expire by December 2025. After that, those with subscription licenses will not be able to open the app, and will not be able to access their historic design documents.
  • One of the significant issues engineers are encountering is that the new version of the software is not directly compatible with their historical Mathcad documents. PTC no longer has the right to distribute software versions with a third-party component, and has opted to use a different symbolic calculation engine in Mathcad Prime® that cannot read and edit the legacy files.
  • Another issue is that the Mathcad 15 software does not support Windows 11, so is typically run on Windows 10, a platform that Microsoft will not be supporting after October 2025.
  • Without a reliable way to keep accessing their project work in the Mathcad 15 format, engineers are looking for an alternative design worksheet platform.

As a result, engineers with large repositories of these design files now face converting all the worksheets to a new format or risk losing access to valuable design reports, and the possible regulatory consequences.

Maple Flow as a replacement for Mathcad 15
Engineers who want a long-term stable environment for their critical project work can change their design workflow to use Maple Flow for everyday calculation tasks.

The advanced math features and formatting options in Maple Flow make it a good fit for creating (and updating) design documentation and hand calculations, where engineers combine mathematical equations and variables that change regularly, and show the results in a report.

Maple Flow has a short learning curve, and the range of example templates in the Application Center and the customized training all help users quickly get up to speed with Maple Flow commands and formatting features.

How can I migrate Mathcad 15 content to Maple Flow?
Maplesoft has created a series of migration strategies for users of Mathcad software to transition to Maple Flow for ongoing calculation needs or to meet compliance requirements.

For engineers with a handful of worksheets, or where the calculations only span a few pages, it is relatively quick to reenter the calculations directly in Maple Flow. Some steps will need to be updated to the equivalent Maple Flow function, and there is also the opportunity to use features that are not available in Mathcad 15 (or its successor Mathcad Prime), such as advanced signal processing tools, thermodynamic data, and functionality for the analysis of linear systems.

For engineering firms with large repositories of legacy Mathcad 15 files, Maplesoft has developed a convenient path to migrate batches of content into Maple Flow. Maplesoft Engineering Services guide customers through the migration process and apply an efficient Migration Assistant to move the equations, variable definitions, units, layout, and other supported features from Mathcad 15 worksheets to Maple Flow. The content is mapped to the equivalent Maple Flow functionality, so that calculations can be run and developed further. This allows project worksheets and templates to be recreated with the least investment in time.

This image shows a calculation section before and after batch migration into Maple Flow format:

Ongoing support from Maplesoft

Maple Flow was first launched in 2021 and was developed to give engineers a single tool that can perform mathematical analysis and present results in a professional-looking format. There is built-in support for natural mathematical notation and tracking units, and the development roadmap continues to follow a user-focused approach, so new usability enhancements are regular and relevant.

The current release of Maple Flow gives engineers a path to avoid losing legacy calculations and designs previously stuck in Mathcad 15 worksheets and reuse the content for ongoing project work.

If you would like assistance from Maplesoft with migrating large repositories of design worksheets, please contact Maplesoft Sales.

[This is a contributed article by Alex Beilby, Technical Marketing Mgr, Maplesoft]

I just came across an issue when solving a simple thermodynamics problem. Steam enters a turbine at 140 psia and 1000 F and expands isentropically to 2psia. When I try to determine the exit temperature, the problem occurs. If I set the units for the problem to FPS, I get the answer in F. The problem is that the numerical value is wrong. The numerical value corresponds to degree R, not F. The numerical value given is 585 F, it should be 585 R.  If I set the problem to SI units, the answer is in K. The answer given is 325 K.  I can then convert it to degree F. This way I get the correct answer.

Axis properties and line width reverts to some set of defaults each time my work recalculates the plot. Is there a way I can keep the axis properties and line width from changing each time recalculation occurs?

I've used LinearSolve(A,b) to find three unknowns. How do I assign these values to three named variables?

I assigned the resulting vector to a new one


and then, one by one, assigned the elements to variables

C1:= V[1}

C2:= V[2]

C3:= V[3]

But there perhaps is a more elegant way to do this?

A Flow and Maple user wonders why Maple Flow may evaluate to high-precision, floating point numbers compared to the same commands used in Maple that evaluate to simple, concise answers.



We suggest the same results can be achieved by toggling the numeric/symbolic evaluation mode toggle in the Flow math container(s)





For more information, please see section 3.5 of the Maple Flow User Manual (Numeric and Symbolic Evaluation Modes). 

I've tried some simple uses of solve in MapleFlow without success. For example


does not return


Does solve work in MapleFlow? Is there a problem with this Maple syntax in MapleFlow?

When I try to enter units using the units palette Maple Flow 2023.1 will erase the numerical value entered. That never happened before in previous releases of Maple Flow. No problem if you enter the units yourself, the problem is when you use the units palette. What is going on? A couple of weeks ago I also posted a question about not beeing able to enter an equal sign when entering a math expression in a text region. Agai, this never happened before in previous releases of Maple Flow. What is happening? Am I doing something wrong?

If I select Insert | Header Footer ... and choose the Custom Header tab, I don't see a way to create a multi-line header. How do I create a custom multi-line header?

Today, I trried to enter an equation into a text region using Ctrl+R (In Maple Flow 2023.1), like I have always done in previous releases of Maple Flow. Well, today it did not work. I tried to enter the equation Q=W+mCv(T2-T1). When I tried to enter the equal sign after the Q, the program would not allow me to do it. I would press the equal sign and nothing happened. I tried :=, but it would only enter the :, it would not let me enter the =. Any help will be appreciated.

Hello everyone,

I am coming from Mathcad Prime wanting to use Maple Flow so I have no underlying knowledge of Maple language.

I just want to simply compare two numerical variables and check whether one is greater than or less than the other.

I have found the verify() function and found that it could not evaluate it, as it results in a "FAIL", however, a simple integer test would correctly test the inequality.


1. Is there another way to test this? What am I missing?  On Mathcad, i just use: Ve>Volcalculated and it would return a 1 or 0

2. Maple flow help (2023) does not really bring up the verify() function, I had to browse through examples and mapleprimes to get to it.  Is there a Maple Flow specific help to search for functions I can use?


We've just launched Maple Flow 2023!

The new release offers many enhancements that help you calculate and write reports faster, resulting in polished technical documents. Let me describe a few of my favorite new features below.

You can now change the units of results inline in the canvas, without taking your hands off the keyboard. You can still use the Context Panel, but the new method is faster and enhances the fluid workflow that Flow exemplifies.

You can also enter a partial unit inline; Flow will automatically insert more units to dimensionally balance the system.

This is useful when results are returned in base dimensions (like time, length and mass) but you want to rescale to higher-level derived units. For an energy analysis, for example, you might guess that the result should contain units of Joules, plus some other units, but you don't know what those other units are; now, you can request that the result contains Joules, and Flow fills the rest in automatically.

The new Variables Palette lists all the user-defined variables and functions known to Flow at the point of the cursor. If you move your grid cursor up or down, the variables palette intelligently removes or adds entries.

You can now import an image by simply dragging it from a file explorer into the canvas.

This is one of those small quality-of-life enhancement that makes Flow a pleasure to use.

You can now quickly align containers to create ordered, uncluttered groups.

We've packed a lot more into the new release - head on over here for a complete rundown. And if you're tempted, you can get a trial here.

We have a lot more in the pipeline - the next 12 months will be very exciting. Let me know what you think!

Page 1 of 1