just start with a known solution for first time step

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Markus Kellermeier

Markus Kellermeier

January 25, 2013 3:45pm UTC

just start with a known solution for first time step

Hi,
there is a simple solution, or?
I perform a time-dependent study. But the input variable for the time is not long enough, so I want to repeat this pattern several times. Unfortunately it does not work as I imagine it. How to start with the known solution from the previous study only for the first step of the new study?
Thanks
Markus

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Josh Thomas

Josh Thomas
Certified Consultant
AltaSim Technologies, LLC

January 25, 2013 8:15pm UTC in response to Markus Kellermeier

Re: just start with a known solution for first time step

Markus,

1st create a new study. In the new study...
Under Step 1: Time Dependent, in the Settings window, expand Values of Dependent Variables.
Check Initial values of variables solved for
Method: Change Method to Solution
Study: Select the Study that you would like to reference
Selection: Select the Time step from that study that you would like to use. In your case, use "Last."

Regards,
Josh Thomas
AltaSim Technologies

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Josh Thomas

Josh Thomas
Certified Consultant
AltaSim Technologies, LLC

January 25, 2013 8:15pm UTC in response to Markus Kellermeier

Re: just start with a known solution for first time step

Markus,

1st create a new study. In the new study...
Under Step 1: Time Dependent, in the Settings window, expand Values of Dependent Variables.
Check Initial values of variables solved for
Method: Change Method to Solution
Study: Select the Study that you would like to reference
Selection: Select the Time step from that study that you would like to use. In your case, use "Last."

Regards,
Josh Thomas
AltaSim Technologies

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Markus Kellermeier

Markus Kellermeier

January 26, 2013 3:07pm UTC in response to Josh Thomas

Re: just start with a known solution for first time step

Thanks Josh,
I know this possibility.
But I was not sure if your solution does not at any time following step refers in the approach first to this initial solution. In my model, it initially looked like this. Even if I not pick the "last" time step, but "automatic", it works exactly the same. So I was really confused.
Another solution was than more familiar to me:
You export the final solution (eg in case of 2D as xy-matrix) and imports it as int1(x, y) and use it as initial variable and repeat the same study. It works like your proposal, Josh.
Best Regards,
Markus



Markus,

1st create a new study. In the new study...
Under Step 1: Time Dependent, in the Settings window, expand Values of Dependent Variables.
Check Initial values of variables solved for
Method: Change Method to Solution
Study: Select the Study that you would like to reference
Selection: Select the Time step from that study that you would like to use. In your case, use "Last."

Regards,
Josh Thomas
AltaSim Technologies

Reply  |  Reply with Quote  |  Send private message  |  Report Abuse


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