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CFD中文网

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  3. functionObject里面可以加自定义的程序吗

functionObject里面可以加自定义的程序吗

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  • S Offline
    S Offline
    Samuel-Tu
    wrote on last edited by
    #1

    能不能在system/controlDict里面加一个functionObject,然后再在functionObject里面加一个codeStream呢?
    做这个的目的是,functionObject本身能提取wallShearStress,但是我需要对其进行开方,目前OF似乎没有直接的后处理开平方功能,所以我想能不能在里面加一个codeStream,codeStream里提取wallShearStress并开平方后输出?

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  • S Offline
    S Offline
    Samuel-Tu
    wrote on last edited by
    #2

    找到了一个东西codedFunctionObject可能可以直接实现

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  • C Offline
    C Offline
    cresendo
    wrote on last edited by
    #3

    直接在wallShearStress的代码上修改,重新编译一个新的functionObject,可能更加方便:146:

    S 1 Reply Last reply
  • S Offline
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    Samuel-Tu
    replied to cresendo on last edited by Samuel-Tu
    #4

    @cresendo 是的。主要是编译麻烦,我已经搞清楚codedFunctionObject了。用codedFunctionObject好处是不用去改源代码,可以方便得给别人用,嘿嘿。相当于加了一个外载程序,嘿嘿。下周二会在公众号里分享一下使用方法,到时候也到cfd中文网来。

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    cresendo
    replied to Samuel-Tu on last edited by
    #5

    @Samuel-Tu 提前感谢分享了:xinxin2: 好奇楼主的公众号是?

    S 2 Replies Last reply
  • S Offline
    S Offline
    Samuel-Tu
    replied to cresendo on last edited by
    #6

    @cresendo 就叫OpenFOAM。。七个人在做,我的是周二发

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  • S Offline
    S Offline
    Samuel-Tu
    replied to cresendo on last edited by
    #7

    @cresendo https://mp.weixin.qq.com/s/5aoUmeQGCqULXuBe73AtdA
    今天出了,一个简单教程

    H 2 Replies Last reply
  • C Offline
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    cresendo
    wrote on last edited by
    #8

    @Samuel-Tu :xinxin3: 感谢

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  • H Offline
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    hongjiewang
    replied to Samuel-Tu on last edited by
    #9

    @Samuel-Tu 您好,您例子中输出的是一个场量,如果我只是想把一个数值输出到postProcessing中,应该定义一个什么样的类型(类似IOField)。

    const volScalarField& b = mesh().lookupObject<volScalarField>("alpha.liquid");
    scalar c= b.weightedAverage(mesh().V()).value();
    
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  • H Offline
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    hongjiewang
    replied to Samuel-Tu on last edited by
    #10

    @Samuel-Tu 您好,将您的语句添加在我的case中,其中只修改了patch的名字,结果出现下面的错误,请问应该怎么修改。

    #0  Foam::error::printStack(Foam::Ostream&) at ??:?
    #1  Foam::sigSegv::sigHandler(int) at ??:?
    #2  ? in /lib/x86_64-linux-gnu/libpthread.so.0
    #3  Foam::fvPatch::Cf() const at ??:?
    #4  Foam::writeCentersFunctionObject::write() at system/controlDict.functions.writeCenters:74
    #5  Foam::functionObjectList::execute() at ??:?
    #6  Foam::Time::run() const at ??:?
    #7  ? in ~/OpenFOAM/dyfluid-v2006/platforms/linux64GccDPInt32Opt/bin/hybridPorousInterFoam
    #8  __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
    #9  ? in ~/OpenFOAM/dyfluid-v2006/platforms/linux64GccDPInt32Opt/bin/hybridPorousInterFoam
    Segmentation fault (core dumped)```
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