A folded mesh （ ansys 和cfx耦合）
ansys 和cfx耦合出现如下问题：Fatal error notification received The reported error is A folded mesh
has occurred.This process will shut down after the current stagger
iteration.
通过调整时间步可以解决这个问题，有人知道这是为什么吗？ folded mesh字面翻译是网格交错的意思，应该是CFX网格动态变化过大造成的。
减小时间步长之后，网格变化量减小，这样发生网格交错的可能性就小了。 to FSI (在线)
如果把时间步长设置的太小也会出现这种情况，为什么呢？
FSI (在线)能解释一下吗？
谢谢 因为我没有用CFX做过，具体不清楚是什么问题。
如果folded mesh指的是动态网格变化造成的，那么时间步长很小应该不是问题所在。你还是查一下CFX看看有没有相应的错误信息说明。 谢谢 回复 4 # FSI 的帖子
你好，请问我调小后依然报错，/COM,ANSYS RELEASE 13.0 UP20101012 21:54:21 11/15/2011
*** WARNING *** CP = 2.219 TIME= 21:54:38
ANSYS results must be written into the database for Multifield
analysis.The /CONFIG,NOELDB,1 command is ignored.
*** WARNING *** CP = 12.703 TIME= 21:56:39
The component MFLC_1_1_DISP_2 was created for MFLC,1,1,DISP,2 command
to display improperly mapped nodes.Set /debug,,2 for more
information on improperly mapped nodes.
*** WARNING *** CP = 43.641 TIME= 21:57:23
Element shape checking is currently inactive.Issue SHPP,ON or
SHPP,WARN to reactivate, if desired.
*** WARNING *** CP = 356.234 TIME= 22:17:24
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 670.906 TIME= 22:39:06
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 928.500 TIME= 22:59:26
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 1173.578 TIME= 23:18:47
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 1417.625 TIME= 23:37:21
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 1662.609 TIME= 23:55:58
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 1906.234 TIME= 00:14:05
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 2151.781 TIME= 00:32:12
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 2396.391 TIME= 00:50:18
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 2644.609 TIME= 01:08:21
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 2891.375 TIME= 01:26:20
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 3137.812 TIME= 01:44:24
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** WARNING *** CP = 3387.734 TIME= 02:02:33
The maximum number of stagger iterations has been reached for
multifield solver but the interface quantities have not yet converged.
The analysis will proceeds to the next time step.Increase number of
stagger iterations using the MFITER command for converged interface
solution.
*** FATAL *** CP = 3414.500 TIME= 02:03:39
Fatal error notification received from field solver: CFX.The message
received is: CFX encountered the error: 0. A folded mesh has
occurred.This process will shut down as soon as possible.
************************************************************************
The above error is non-recoverable by ANSYS
ANSYS run terminated by the indicated error
Current data base saved if possible.
************************************************************************ tsw20031117 发表于 2011-11-16 09:35
回复 4 # FSI 的帖子
你好，请问我调小后依然报错，/COM,ANSYS RELEASE 13.0 UP20101012 21:54:2 ...
你好，“ANSYS results must be written into the database for Multifield
analysis.The /CONFIG,NOELDB,1 command is ignored.”这个警告，会对计算带来影响吗？
tsw20031117 发表于 2011-11-16 09:35
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不知道你的问题解决了没有？？
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