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plhuang

新虫 (初入文坛)

[求助] dymola仿真错误,求指导

在用dymola仿真自己建的空调模型时,发生如下错误,
The DAE has 8536 scalar unknowns and 8536 scalar equations.
Error: The initialization problem is overspecified for variables of element type Real.
There are 2 too many scalar conditions.
To correct it you can
  remove initial equations:   pipe2.p[1] = pipe2.p0[1];
  pipe2.h[1] = pipe2.h0[1];
  pipe2.h[1] = condenser.refrigerant.h0[1];
  pipe2.p[1] = condenser.refrigerant.p0[1];

如何解决?
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东平Modelon

金虫 (小有名气)

【答案】应助回帖

★ ★ ★ ★
xiegangmai: 金币+1, 谢谢参与 2012-12-12 09:08:20
plhuang: 金币+3, ★★★很有帮助, 好的,我试试 2012-12-12 23:52:03
显然就和你看到的一样,初始化条件过多而且互相矛盾了。直接把pipe2里面对h 和 p的初始化删除就可以了。
2楼2012-12-12 02:44:31
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plhuang

新虫 (初入文坛)

引用回帖:
2楼: Originally posted by 东平Modelon at 2012-12-12 02:44:31
显然就和你看到的一样,初始化条件过多而且互相矛盾了。直接把pipe2里面对h 和 p的初始化删除就可以了。

Warning: The sizes could not be deduced to be equal symbolically.
However, exploiting the given numerical settings of parameters gives the same number of unknowns and equations:
  8571
这个警告怎么消除呢?它会对仿真造成什么影响?
3楼2012-12-12 23:53:32
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