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  • 论坛搜索功能下线了?

    CFD彩虹条
    3
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    D

    @李东岳 我发了帖子之后才发现你之前发过通知了,不是催更,抱歉抱歉~:chitang:

  • fluent udf求助?

    Fluent
    3
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    Y

    @bestucan 好的,谢谢老师!

  • OpenFOAM中的湍流模型

    OpenFOAM
    6
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    ShaneHEEES

    @tens :136: 啊这,谢谢前辈:146:

  • UCSD-SDSU 联合博士项目招生

    CFD彩虹条
    1
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    O

    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.

  • 0 赞同
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    10k 浏览

    @李东岳 好的李老师,受教了

  • CFD青年成长支持计划(2021)

    公告
    137
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    165k 浏览
    F

    想问一下李老师这个计划还有吗!!很想要这本湍流模型:mianmo:

  • 有个fluent问题想请教一下。

    Fluent
    5
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    @bestucan 好的,谢谢您。

  • 0 赞同
    7 帖子
    7k 浏览
    S

    @cccrrryyy 好的,谢谢您。

  • fluent欧拉多相流壁面润滑力选取

    Fluent
    3
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    C

    @李东岳 好的,谢谢东岳老师

  • 0 赞同
    3 帖子
    4k 浏览

    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; // ************************************************************************* //
  • 0 赞同
    3 帖子
    5k 浏览
    J

    请问像这种狭窄处要划分边界层,怎样处理能保证网格高质量呢

  • VMware Ubuntu1804

    CFD彩虹条
    26
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    李东岳

    @小火人 为什么不直接用绿色版paraview呢

  • 如何导入大量probe探针的坐标

    OpenFOAM
    2
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    Z

    @乌云盖雪 复制粘贴?

  • 0 赞同
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    bestucanB

    https://www.cfd-online.com/Forums/openfoam-meshing/133850-snappyhexmesh-problems.html

  • 航空航天方面的企业推荐

    CFD彩虹条
    13
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    N

    @liujuncfd
    本科待遇年薪15w左右,硕士年薪20w左右,博士年薪25w。
    https://www.zhipin.com/job_detail/fe4f05de98c982591nN62Ni7GVZT.html?ka=hot-job-1

  • Starccm+DEM求助

    CFD彩虹条
    1
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    在第一个时间步内生成了颗粒,怎么把颗粒的位置和尺寸并导出成表,并用表喷射器进行填充

  • OpenFOAM如何设置球形相域?

    OpenFOAM
    3
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    @tens 在 OpenFOAM如何设置球形相域? 中说:

    @郑学习

    球形用sphereToCell 在openfoam下\etc\caseDicts\preProcessing\setFieldsDict可以查到

    感谢!跑通了!

  • 前处理,进口面问题

    Meshy
    4
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    bestucanB

    icem也有这个功能,只是我没用过,

    https://cfd-china.com/topic/6069/搅拌反应器icem结构网格划分方式/7

    Screenshot from 2024-09-28 14-40-10.png

  • 0 赞同
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    李东岳

    截断误差首项阶次一样

    我推了一下,CD的更小。不一样啊。

    捕获.PNG

  • 非结构化网格的面积矢量

    Algorithm
    13
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    姜宏伟

    @李东岳 感谢李老师,解决了我的心腹大患:xiabanle: :140: