Sometimes when I run parametric table of EES (sweep a variable) I have get unstable answer at some rages.
For example for 0, 1, 2, 3 I get 10, 0.005, 9.5, 0.00000014
But when I don't use parametric table and by running them singularly in the main window of EES with F5 key, I get 10, 9.7, 9.5, 9.3 for 0, 1, 2, 3
What's the problem?
I have reduced convergence criteria but the problem is not solved...
For example, I attached a photo. Starting and ending range of the variable are the same, but the results are not. The marked result is the true result.
EES solves your system of equations numerically, and if there are multiple possible solutions, it will only return one of them. I would guess that perhaps your system of equations has multiple solutions and different inputs converge to different solutions. If you know the solution you are looking for is in a particular range you could limit the range of some of your variables, and/or you could change your initial guess.
EES solves your system of equations numerically, and if there are multiple possible solutions, it will only return one of them. I would guess that perhaps your system of equations has multiple solutions and different inputs converge to different solutions. If you know the solution you are looking for is in a particular range you could limit the range of some of your variables, and/or you could change your initial guess.
Hmm, that's an interesting problem you're running into there. Unfortunately, in order to better answer regarding what's specifically happening with this, I would have to examine exactly what you are solving and the equations that you have implemented.
I would be interested in examining what's happening here if you'd like a second set of eyes, but it might take me a while to get to it since it's nearing the end of my teaching semester.
If you think that this is a software issue, F-Chart specifically asks that such things be brought to their attention so they can be fixed. http://www.fchart.com/support/
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