How to fix initial conditions solve failed to converge error message?

1 次查看（过去 30 天）

Aiden 2023-11-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2043432-how-to-fix-initial-conditions-solve-failed-to-converge-error-message

评论： Yifeng Tang 2024-3-27

Hi,

I am modelling the compression of air from an upstream reservoir to a constant volume chamber using a positive displacement compressor (G). I keep getting the error message;

initial conditions solve fialed to converge.

Here is a set of componenets with unconverged equations

the block in question is the poisitive displacement compressor (G).

I have looked online and have tried all the fixes suggested; Steady start on/off, increasing consistency tolerance in solver, reducing step time, chnaged block parameters...

I also have not set any initial conditions but get the warning, initial conditions failed to converge.

any suggestions appreciated.

2 个评论
显示无隐藏无

Divyanshu 2023-12-15

编辑：Divyanshu 2023-12-15

Hi Aiden,

Can you share the model file? It is really difficult to track the issue from the image of the model, instead sharing the model file would help in finding out the root cause of the issue and providing a workaround/solution for the same.

Yifeng Tang 2024-3-27

Just commenting to follow the activities in case any model gets uploaded.

One possible thing to try: start the compressor from zero speed instead of a constant. That way one can at least look at the results in Simscape Result Explorer and try to tell what's happening.

请先登录，再进行评论。

请先登录，再回答此问题。