Why does ode15s open a new windows command window for each iteration?

Question

Adriaen 2014-9-30

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/156814-why-does-ode15s-open-a-new-windows-command-window-for-each-iteration

评论： Adriaen 2014-9-30

采纳的回答： Sean de Wolski

model_DAE.m

在 MATLAB Online 中打开

Hi

I'm trying to solve a DAE system using ode15s. The system contains 6 differential and 10 algebraic residual equations. I know that my initial values are close to the correct values. But when I try to run my script, MATLAB opens a new windows command window for each iteration (C:\Windows\sys32\cmd.exe). The only thing displayed in the command window is my current path (in this case M:\Documents\MATLAB\) The iteration is painfully slow. How can I solve this problem?

Thanks in advance

EDIT: The same problem occurs when trying to solve the system at steady state, i.e. when using fsolve to solve g(x) = 0. So my guess is that the problem is related to solving the implicit algebraic equations.