DAE in Prime - work with units

[ValeryOchkov]

You can see in attach a solution one DAE (Simple Pendulum Motion) problem.

Without units - OK

With units - not OK

What is the problem?

[AlanStevens]

I can't see a good reason for your DAE to fail with units but work without units. I've attached an x-y version that does work with units, but it is formulated in ODE-only form, not DAE form (and if I change it to DAE form it fails with the same "incompatible units" error).

Alan

[ValeryOchkov]

AlanStevens wrote:

I can't see a good reason for your DAE to fail with units but work without units. I've attached an x-y version that does work with units, but it is formulated in ODE-only form, not DAE form.

Alan

It seems to me that Prime can solve ODEs with units, but cannot solve DAE with units.

Jakov! Is it so?

PS

Allan, I will be in London (University of Greenwich) 8/30-7/9 and will be glad to present You my Mathcad-clock - http://communities.ptc.com/thread/32536

OK?

[AlanStevens]

Valery Ochkov wrote:

PS

Allan, I will be in London (University of Greenwich) 8/30-7/9 and will be glad to present You my Mathcad-clock - http://communities.ptc.com/thread/32536

OK?

Great! But what are the dates exactly? Is that 30th Aug to 7th Sept. or what?

I guess these are the dates as the conference on water and steam properties is 1st to 5th Sept. I have a meeting in London on 4th Sept. Hopefully we can meet then.

Alan

[ValeryOchkov]

AlanStevens wrote:

Valery Ochkov wrote:

PS

Allan, I will be in London (University of Greenwich) 8/30-7/9 and will be glad to present You my Mathcad-clock - http://communities.ptc.com/thread/32536

OK?

Great! But what are the dates exactly? Is that 30th Aug to 7th Sept. or what?

I guess these are the dates as the conference on water and steam properties is 1st to 5th Sept. I have a meeting in London on 4th Sept. Hopefully we can meet then.

Alan

Fine!

I have free time 4th Sept.

We can have a meeting if... I will get UK visa. It is very difficult...

[ValeryOchkov]

AlanStevens wrote:

I have a meeting in London on 4th Sept. Hopefully we can meet then.

Alan

Alan!

I am now in London. With Mathcad-clock

Hotel: De Vere Venues Devonport House, room 202
Address: King William Walk, Greenwich, London

[jkucan]

We are looking into this... It should work.

[jkucan]

The issue has been fixed in Prime 3.0 -- coming out soon.

[ValeryOchkov · Accepted solution]

Jakov Kucan wrote:

The issue has been fixed in Prime 3.0 -- coming out soon.

Thanks, Яков!

All OK in Prime 3: