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    @李东岳
    李老师好
    公司领导论文, 来不及实验测了。用fluent,做的是喷淋冷却,主要之前没开固液黏附选项。实在不行我再统一取一个角度吧。

  • VOF多相流初始化后相图分布情况不正确

    Fluent
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    @bestucan 谢谢老师,非常感谢您的建议,我再试试

  • HyperMesh为STARCCM+生成面网格

    Meshy
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    @李东岳 在 HyperMesh为STARCCM+生成面网格 中说:

    感谢分享!有益于后来人

    共同进步!

  • 0 赞同
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    @李东岳 明白了,谢谢李老师。排版排了好久,清楚一点方便讨论:papa:

  • CFD青年成长支持计划(2022)

    公告
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    我是南京航空航天大学航空学院2022级硕士研究生吴祥清,跟随张老师链接文本从事CFD研究,本人的主要研究方向为高速出入水,初步学习商软入门CFD现在准备编程写算法。查找学习资料了解到CFD中文网以及老师,所以想申请2022CFD青年成长支持计划,我目前正在使用LS-DYNA软件进行垂直破冰仿真,开始着手发相关论文。在本科期间接触流体力学便想深入了解这个专业,也申请了这个方向的研究生,如果论文写作顺利,便会在研究生二年级申请硕博连读,为国家军事建设贡献自己的一份力量。目前在上课之余也开始着手C++入门。但是CFD学习之路道阻且长,希望可以得到老师资助来更好的学习CFD。

  • 关于置换通风室内气流模拟不收敛问题

    Fluent
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    @深蓝 感谢感谢!

  • UCSD-SDSU 联合博士项目招生

    CFD彩虹条
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    Job description
    We provide the opportunity for the joint Ph.D. program between UCSD and SDSU.

    Research motivation
    Do you know that measurement in a turbulent environment has its own "sixth
    sense"? In fluid dynamical systems, measurements can be used to figure out
    events that happened far away from the probing location.
    Through state-of-art data assimilation techniques, we can trace back the origin
    of any information we have measured. We used this technique to locate the
    release of a pollution release, and reconstruct unknown flow fields from limited
    measurements.

    Are you self-motivated to do a Ph.D. in interdisciplinary researches about fluid
    dynamics, inverse problems, and optimization? We are looking for Ph.D. students
    that are willing to spend time studying in an encouraging and creative
    environment!

    There has been a long-hovering question about how to combine experimental
    measurements with numerical simulations. Especially in terms of designing a
    turbulence model that agrees with experimental studies. In addition, the design
    of sensor networks or sensor weighting can be optimized in terms of the amount
    of information obtained.
    In this Ph.D. project, you will develop novel simulation techniques that combine
    machine learning techniques with data assimilation.

    The required skills and preferred profile
    We are looking for self-motivated young researchers from mechanical
    engineering, aerospace engineering, computational physics, applied mathematics,
    or other closely related areas.

    Familiar with MATLAB and FORTRAN with MPI. C++ and python is a plus. Good conceptual understanding of calculus and linear algebra. Experience with simple machine learning algorithms. Good communication skills including presentation skills, academic writing
    with latex or word. Please note that the GRE is required for all JDP applicants and cannot be
    waived. Having a part-time hobby is a plus.

    Location
    Work is carried out in the Data Assimilation group at Aerospace Engineering, San Diego State University.
    We study various inverse problems in fluid dynamics using numerical simulations
    with the discrete adjoint operator.
    For further information, please visit us at
    https://qiwang.sdsu.edu/

    Information and application
    Interested applicants should visit
    https://www.engineering.sdsu.edu/admissions/jointdoc_areomech.aspx
    for more details about applying for the joint program.
    Meanwhile, please reach out to Qi Wang (qwang4@sdsu.edu), including:
    • A short description of your qualifications and motivation to apply for this
    position.
    • CV or resume.
    • Transcripts from your Bachelor and Master degrees.
    Selected candidates will be invited to an interview and should prepare a
    scientific presentation as part of the requirements.

    We highly value diversity at our university. Applicants from all backgrounds are
    welcomed.

  • cell,tecFace and tetPt search failure at position

    OpenFOAM
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    Y

    @yuhx 请问您现在解决了么

  • ICEM绘制的网格导入openfoam之后出现异常

    Meshy
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    @李东岳 好的,谢谢李老师

  • 求助~Fluent PBM UDF-Luo聚并模型

    Fluent
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    C

    请问luo破碎核的UDF怎么编写呢?

  • Openfoam代码修改

    OpenFOAM
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    李东岳

    最简单的,你也可以创建跟fluidPhase.field[i]一样的Dc[i],然后弄进去

  • C12H26组分数较少的chemkin燃烧反应机理

    OpenFOAM
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    @ann 阿伦尼乌斯(Arrheniu)反应速率的三个参数($A$,$b$,$E_a$):

    $$
    k=AT^b\exp(- \frac{E_a}{RT})
    $$

    $k$ 的单位是 $ \rm cm^3/mol/s$,$E_a$ 的单位是 $ \rm cal/mol$,$A$ 的单位根据 $b$ 的值确定。

    @ann 在 C12H26组分数较少的chemkin燃烧反应机理 中说:

    C7H16 + 11O2 => 7CO2 + 8H2O 5.00E+8 0.0 15780.0! 1

    这个反应里 $b=0.0$,$A$ 的单位就是 $ \rm cm^3/mol/s$。

  • CFD中文网 定位与规范

    已固定 公告
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    我写 固我在,嘿嘿

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    WIN笔记本+linux 主机

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    SPH-DEM是否适合做气液固三相搅拌

  • 利用Tosca Fluid做流道优化

    Fluent
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    打扰大家,有用Tosca Fluid做流道优化的吗,或者用别的软件也行,加个好友,一起讨论学习。

  • 翻到之前的基金申请拒信

    CFD彩虹条
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    李东岳

    不知道他们几千万的CFD算法研究经费都是怎么构成的 :143:

  • 每日一问:有关icem网格检查失败问题

    Meshy
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    icem网格划分导入fluent时检查失败,显示Error: interface zone 3 has two adjacent cell zones.
    4f68eb65-132e-4314-b0f6-6964dc466673-image.png

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    上传一下我的snappyhexMeshDict文件,请各位老师帮忙看看```
    code_text

    ========= | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / O peration | Website: https://openfoam.org \\ / A nd | Version: 10 \\/ M anipulation | \*---------------------------------------------------------------------------*/ FoamFile { format ascii; class dictionary; object snappyHexMeshDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // #includeEtc "caseDicts/mesh/generation/snappyHexMeshDict.cfg" castellatedMesh true; snap true; addLayers true; geometry { cylinder { type triSurfaceMesh; file "cylinder.stl"; } refinementBox { type searchableBox; min (0.0 0.0 0.08); max (1.2 0.2 0.22); } }; castellatedMeshControls { maxLocalCells 200000; maxGlobalCells 5000000; minRefinementCells 10; maxLoadUnbalance 0.10; nCellsBetweenLevels 6; features ( { file "cylinder.eMesh"; level 3; } ); refinementSurfaces { cylinder { level (3 3); patchInfo { type wall; } } } refinementRegions { refinementBox { mode inside; level 1; } } insidePoint (0.4 0.1 0.15); } snapControls { nSmoothPatch 3; tolerance 2.0; nSolveIter 30; nRelaxIter 5; nFeatureSnapIter 10; explicitFeatureSnap true; implicitFeatureSnap false; multiRegionFeatureSnap false; } addLayersControls { layers { "(cylinder_stl_face<stlunit=MM>|cylinder_stl_top<stlunit=MM>)" { nSurfaceLayers 10; } } relativeSizes true; expansionRatio 1.05; finalLayerThickness 0.8; minThickness 0.5; } meshQualityControls {} writeFlags ( // scalarLevels // layerSets // layerFields ); mergeTolerance 1e-6; // ************************************************************************* //
  • 关于MPPICInterFoam

    OpenFOAM
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    @youhaoyu 用的是服务器linux系统的of和paraview。vtk我之前也弄明白了,现在都能看到我想要的结果了