Skip to content
  • 瞬态问题最大迭代步设为1是否可行?

    Fluent
    3
    0 赞同
    3 帖子
    5k 浏览

    @bestucan
    多谢老师解惑!:xiexie:
    我思考了一下,可能这种方法还是看具体问题。
    如果是一个稳态问题的话,可能这种方法就想当于取巧的稳态计算方法。
    如果是一个需要关注瞬态变化的问题,这种方法就不合适了。

  • fluent封闭形成流体区域

    Meshy
    1
    0 赞同
    1 帖子
    3k 浏览

    QQ浏览器截图20220113163626.png
    问题:2021r2版本,在封闭形成流体区域的过程中,无法选择面。有哪位前辈指点一下吗

  • 0 赞同
    5 帖子
    5k 浏览
    李东岳

    看起来确实没辙了

  • Star-ccm两相流仿真

    Fluent
    5
    0 赞同
    5 帖子
    8k 浏览
    E

    感觉模型确实用的不对,我之前用的vof模型,看了一下帮助文件,感觉应该用Multiphase Segregated Flow Model:xinlei:

  • Foam-extend 并行计算报错

    OpenFOAM
    7
    0 赞同
    7 帖子
    8k 浏览
    T

    @李东岳 好的吧,谢谢李老师!

  • 0 赞同
    1 帖子
    2k 浏览
    L

    求助,本人在做热流体固耦合时,最后一步静应力分析,solution出现红色闪电符号,报错显示An unknown error occurred during solution. Check the Solver Output on the Solution Information object for possible causes.
    图如下
    43e918b9-699d-4ebc-bfda-d89551564eb0-屏幕截图 2021-07-23 103919.png
    1d1a6c01-6dfb-4636-a8dd-5eb1544fe1ca-屏幕截图 2021-07-23 104007.png
    前面计算合适着,最后一步出错,试过tools里面的调试,还是不行。

  • ANSYS 超算平台的使用

    CFD彩虹条
    3
    0 赞同
    3 帖子
    6k 浏览
    V

    @桑葚熟了 目前没有用这些集群了,天河没用过,北京超算云那边感觉服务和价格都还不错,EasyCAE这边很久之前用的了之前价格有点小贵,现在不清楚了。

  • latex这个代码怎么省略

    CFD彩虹条
    4
    0 赞同
    4 帖子
    4k 浏览
    L

    mark 一下

  • fluent稳态计算不收敛

    Fluent
    1
    0 赞同
    1 帖子
    2k 浏览
    YungY

    想先稳态计算获得一个初始流场,可是一直不收敛,以前算其他模型稳态算个几百步就收敛了,这个模型算了4000步还没有收敛的迹象!(kw-SST模型,SIMPLEC算法![替代文字](Snipaste_2021-07-16_16-27-49.jpg Snipaste_2021-07-16_16-27-23.jpg Snipaste_2021-07-16_16-26-59.jpg Snipaste_2021-07-16_16-26-26.jpg 图片地址))

  • 论坛搜索功能挂了

    CFD彩虹条
    2
    0 赞同
    2 帖子
    3k 浏览
    李东岳

    论坛每天都有3 4万点击,一万多IP,也不知道啥时候处理好 :143:

  • 0 赞同
    5 帖子
    6k 浏览
    R

    好的,李老师,我在回去多调试一下:zoule:

  • 0 赞同
    1 帖子
    2k 浏览
    B

    对简单的长方体进行网格划分,再检查网格质量时发现在长方体的周围有很多有问题的face产生,也不知原因,很疑惑,求大神指点,万分感谢!

    0T5OC4QVS4OWJO998JSUAU7.png

  • ICEM网格加密

    Meshy
    3
    0 赞同
    3 帖子
    7k 浏览
    G

    @ycx1042341217 @huningdong 请问两位,壁面第一层网格高度可以做到什么程度?我发现最小只能设置到大约5e-5m:136:

  • 0 赞同
    5 帖子
    6k 浏览
    L

    @李东岳 嗯,两个一起下下来就可以的,之前理解错了。

  • UCSD-SDSU 联合博士项目招生

    CFD彩虹条
    1
    0 赞同
    1 帖子
    2k 浏览
    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.

  • 计算流体力学软件研发工程师招聘

    CFD彩虹条
    1
    0 赞同
    1 帖子
    3k 浏览
    N

    央企中国电子信息集团所属企业长沙军民先进技术研究有限公司招聘
    数量:6人
    工作地点:长沙市
    岗位名称:流体计算软件研发工程师
    岗位要求:
    1、流体力学相关专业;
    2、熟悉GPU和CUDA编程;
    3、熟悉C++编程;
    以上三项条件满足二项即可,满足三项者优先录取,流体力学强相关专业者也可面谈。

    基本月薪待遇8K-15K,其他待遇面谈,特别优秀的硕士博士待遇还可以商谈。
    联系人:郭先生,18908480199
    bf037a90-2b9b-464c-83da-3b501a4e6431-image.png

  • 翻到之前的基金申请拒信

    CFD彩虹条
    6
    0 赞同
    6 帖子
    8k 浏览
    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:

  • 0 赞同
    4 帖子
    6k 浏览

    试试减小时间步长,增加迭代次数:)

  • fluent动网格+多相流+非牛顿流体

    Fluent
    5
    0 赞同
    5 帖子
    6k 浏览
    L

    @cccrrryyy 你好,非牛顿模型确实用的是power-law,多写您给的意见,我已经在这上面困惑好久了,谢谢!

  • VMware Ubuntu1804

    CFD彩虹条
    26
    0 赞同
    26 帖子
    31k 浏览
    李东岳

    @小火人 为什么不直接用绿色版paraview呢