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[多场耦合] 请教ADF8000和2703的问题

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发表于 2011-4-4 10:23:25 | 显示全部楼层 |阅读模式 来自 江苏南京
各位好。我最近在做一个流固耦合(是一个转子周围空气推动中间半球形转子转动例子)的例子时遇到了以下的问题。关于8000的这个错误我也查了论坛上的帖子,每个子步的载荷我也缩小了,网格也设置细了,但是还是有这些问题;关于2703,我的模型的精度很高的,误差是10的-9次方。我调了很久 结果没什么变化,请各位高手和老师能帮我看看问题究竟出在那里么?谢过了。我的源程序IN文件有些大,如果有要求贴出来的话请联系我我传给你,恳请好心人帮我调试一下。QQ:154987560*** WARNING *** CODE ADF2703:

    Fluid node (label) 8406 is not attached to boundary geometry 1.
    The relative distance to boundary cell 12721 is 5.181E-01.
    The fluid nodal coordinates are (2.96E-19, 4.83E-03, -1.8E-02)
    The points and their coordinates of the boundary cell are:
        point    6520 = ( 1.915E-04, 4.874E-03, -1.82E-02)
        point       1 = ( 0.000E+00, 4.878E-03, -1.82E-02)
        point       4 = ( 0.000E+00, 5.471E-03, -1.80E-02)

    It is normal to have a small distance between fluid nodes and boundary
    geometry. The relative distance here is defined as the ratio of the
    distance between the fluid node and the closest boundary cell to the
    length of the cell.

    Note: The boundary geometry is internally generated by the program.


*** WARNING *** CODE ADF2703:

    Fluid node (label) 56706 is not attached to boundary geometry 1.
    The relative distance to boundary cell 9521 is 5.181E-01.
    The fluid nodal coordinates are (4.83E-03, -2.8E-29, -1.8E-02)
    The points and their coordinates of the boundary cell are:
        point    4880 = ( 4.874E-03, -1.91E-04, -1.82E-02)
        point    4921 = ( 4.878E-03, -8.96E-19, -1.82E-02)
        point    4922 = ( 5.471E-03, -1.00E-18, -1.80E-02)


*** WARNING *** CODE ADF2703:

    Fluid node (label) 8406 is not attached to boundary geometry 1.
    The relative distance to boundary cell 12721 is 5.181E-01.
    The fluid nodal coordinates are (2.96E-19, 4.83E-03, -1.8E-02)
    The points and their coordinates of the boundary cell are:
        point    6520 = ( 1.915E-04, 4.874E-03, -1.82E-02)
        point       1 = ( 0.000E+00, 4.878E-03, -1.82E-02)
        point       4 = ( 0.000E+00, 5.471E-03, -1.80E-02)


*** WARNING *** CODE ADF2703:

    Fluid node (label) 56706 is not attached to boundary geometry 1.
    The relative distance to boundary cell 9521 is 5.181E-01.
    The fluid nodal coordinates are (4.83E-03, -2.8E-29, -1.8E-02)
    The points and their coordinates of the boundary cell are:
        point    4880 = ( 4.874E-03, -1.91E-04, -1.82E-02)
        point    4921 = ( 4.878E-03, -8.96E-19, -1.82E-02)
        point    4922 = ( 5.471E-03, -1.00E-18, -1.80E-02)


*** WARNING *** CODE ADF2703:

    Fluid node (label) 68506 is not attached to boundary geometry 1.
    The relative distance to boundary cell 9601 is 5.256E-01.
    The fluid nodal coordinates are (4.83E-03, 1.88E-04, -1.8E-02)
    The points and their coordinates of the boundary cell are:
        point    4921 = ( 4.878E-03, -8.96E-19, -1.82E-02)
        point    4962 = ( 4.874E-03, 1.915E-04, -1.82E-02)
        point    4963 = ( 5.467E-03, 2.148E-04, -1.80E-02)


*** WARNING *** CODE ADF2703:

    Fluid node (label) 68711 is not attached to boundary geometry 1.
    The relative distance to boundary cell 9681 is 5.282E-01.
    The fluid nodal coordinates are (4.82E-03, 3.79E-04, -1.8E-02)
    The points and their coordinates of the boundary cell are:
        point    4962 = ( 4.874E-03, 1.915E-04, -1.82E-02)
        point    5003 = ( 4.863E-03, 3.827E-04, -1.82E-02)
        point    5004 = ( 5.454E-03, 4.293E-04, -1.80E-02)


*** WARNING *** CODE ADF2703:

    Fluid node (label) 69121 is not attached to boundary geometry 1.
    The relative distance to boundary cell 9841 is 5.181E-01.
    The fluid nodal coordinates are (4.77E-03, 7.56E-04, -1.8E-02)
    The points and their coordinates of the boundary cell are:
        point    5044 = ( 4.844E-03, 5.734E-04, -1.82E-02)
        point    5085 = ( 4.818E-03, 7.632E-04, -1.82E-02)
        point    5086 = ( 5.404E-03, 8.559E-04, -1.80E-02)


*** WARNING *** CODE ADF2703:

    Fluid node (label) 69326 is not attached to boundary geometry 1.
    The relative distance to boundary cell 9921 is 5.256E-01.
    The fluid nodal coordinates are (4.74E-03, 9.41E-04, -1.8E-02)
    The points and their coordinates of the boundary cell are:
        point    5085 = ( 4.818E-03, 7.632E-04, -1.82E-02)
        point    5126 = ( 4.784E-03, 9.517E-04, -1.82E-02)
        point    5127 = ( 5.366E-03, 1.067E-03, -1.80E-02)


*** WARNING *** CODE ADF2703:

    Fluid node (label) 69531 is not attached to boundary geometry 1.
    The relative distance to boundary cell 10001 is 5.282E-01.
    The fluid nodal coordinates are (4.70E-03, 1.12E-03, -1.8E-02)
    The points and their coordinates of the boundary cell are:
        point    5126 = ( 4.784E-03, 9.517E-04, -1.82E-02)
        point    5167 = ( 4.743E-03, 1.138E-03, -1.82E-02)
        point    5168 = ( 5.320E-03, 1.277E-03, -1.80E-02)

    Too many error/warning messages for code number ADF2703 have been
    encountered.

*******************
*** WARNING *** CODE ADF8000:

Element is found overlapped in <HTOHDH>


*** WARNING *** CODE ADF8000:

Element is found overlapped in <HTOHDH>


*** WARNING *** CODE ADF8000:

Element is found overlapped in <HTOHDH>


*** WARNING *** CODE ADF8000:

Element is found overlapped in <HTOHDH>


*** WARNING *** CODE ADF8000:

Element is found overlapped in <HTOHDH>


*** WARNING *** CODE ADF8000:

Element is found overlapped in <HTOHDH>


*** WARNING *** CODE ADF8000:

Element is found overlapped in <HTOHDH>


*** WARNING *** CODE ADF8000:

Element is found overlapped in <HTOHDH>


*** WARNING *** CODE ADF8000:

Element is found overlapped in <HTOHDH>

    Too many error/warning messages for code number ADF8000 have been
    encountered.

*** ERROR *** CODE ADF6102:

    Error code 1000 identified by sparse solver:
    "Warning (SLV_malloc): system is out of memory(1000)".
    Integers from sparse solver 2140000000, 0, 0.
发表于 2011-4-4 18:29:42 | 显示全部楼层 来自 湖北武汉
Simdroid开发平台
你的错误很多啊,不是一般的严重啊
造成上面的原因
ADF2703
流体的节点与边界几何不相符啊;
ADF8000
单元存在重叠啊;
ADF6102
sparse求解器可以能有问题啊
同时也提示你的内存不足以完成计算啊
上面的错误你可以查阅理论手册上面的错误提示,但是你的模型提示的错误有点多啊,应该仔细检查检查啊
1# whero_2000
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 楼主| 发表于 2011-4-5 09:09:48 | 显示全部楼层 来自 江苏南京
谢谢版主,我是先画了四分之一的半球,后来用的径向,好像是有一些面或者线重叠了,我看过武汉游侠老师的“网格连续与不连续”的资料,建立模型的时候我也是检查误差了 但是还是不行。请问像圆球这样的模型,用什么方式建立比较好啊?还有如果求解器用缺省的,就会直接出现一个ADF8000的错误,就运行不了了,手册里又没有这个错误的提示。。。。
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 楼主| 发表于 2011-4-5 09:20:51 | 显示全部楼层 来自 江苏南京
本帖最后由 whero_2000 于 2011-4-5 09:23 编辑

我这个例子有些像流体流固耦合例子中那个涡轮分析的例子,也有一个空气层是和转子一起转动的,有网格重叠是不是因为我没有设FOLLOW-LEADER关系啊?
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发表于 2013-9-1 09:16:42 | 显示全部楼层 来自 湖北武汉
wry618 发表于 2011-4-4 18:29
你的错误很多啊,不是一般的严重啊
造成上面的原因
ADF2703

王师兄好啊,在这碰到你了,我今天也遇到这个问题了
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