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  • 0 赞同
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    @随风飘姚 您好 我正遇到这个问题,我设置了outflow出口,但是进出口质量就是达不到平衡。请问可以和您交流一下么?

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    学流体的小明

    @lrl3512 compressibleInterFoam可以参考这个
    https://zhuanlan.zhihu.com/p/66444729
    我也是看这个学的

  • CFD找工作咨询

    CFD彩虹条
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    最近在收集一些计算流体力学招聘的信息,看到华为有算法这面的招聘,当然还有热设计工程师,有老铁了解里面的工作内容和加班情况吗?我想了解一下,虽然不一定能进去:135:
    微信图片_20210928091424.jpg 微信图片_20210928091420.jpg 微信图片_20210928091414.jpg

  • High resolution scheme离散对流项

    Algorithm
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    H

    @李东岳 您好,抱歉,很久没来了。当时在学习FVM,最近在尝试利用openfoam解决NS方程。

  • UCSD-SDSU 联合博士项目招生

    CFD彩虹条
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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.

  • 如何使用UDF获得壁面剪切应力

    Fluent
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    @yan 我想问的是壁面边界上的粘性应力,您说的这个应该不是吧?

  • 关于snappyHexMesh网格划分问题

    OpenFOAM
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    李东岳

    @是嘿嘿牛啊 haha 理解理解

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    @李东岳 十分感谢李老师,后面课题组有培训经费一定要来上您的编程课:huahua:

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    基类fvPatchField<Type>的snGrad()定义就是返回face normal gradient... 也就是$\nabla_{\perp}\phi=\nabla\phi\cdot\vec n $

  • CFD青年成长支持计划(2021)

    公告
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    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
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    @bestucan 好的,谢谢您。

  • 关于温度对称边界条件

    Algorithm
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    L

    @李东岳 谢谢李老师

  • ANSYS CFX中的DES模型中SGS模型是什么?

    Fluent
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    RT,想请问一下各位老师,ANSYS CFX中DES 模型中的LES部分求解的SGS模型是什么?目前没有找到。谢谢。

  • fluent多相流声速计算

    Fluent
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    @firejet 有一篇AMSE的Li 2012年的写的Fluent 求解器的文章,你可以看下,类似2512f2b3-f387-4506-8930-f40312a95f1e-image.png

  • 邮件备案

    CFD彩虹条
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    李东岳

    2021-09-17 15-46-22屏幕截图.png

  • 论坛搜索功能下线了?

    CFD彩虹条
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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:

  • 哪位大佬用过投影仪看电视

    CFD彩虹条
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    李东岳

    @同学博 :jingya: 那我还不太知道。不知道这俩是不是一个东西。激光电视目前倒是销量比较差 :qichuang:

  • DPMFoam计算发散的问题

    OpenFOAM
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    D

    @李东岳 有两个问题,第一,计算稳态流场的情况下buoyantBoussinesqSimpleFoam可以采用这种方式吗?第二,这种方法是不是没计算离散相方程。

  • 这个方程怎么求?

    Algorithm
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    李东岳

    \begin{equation}
    m_0=w_1+w_2
    \end{equation}
    \begin{equation}
    m_1=z_1w_1\xi_1+z_2w_2\xi_2
    \end{equation}
    \begin{equation}
    m_2=z_1^4w_1\xi_1^2+z_2^4w_2\xi_2^2
    \end{equation}
    \begin{equation}
    m_3=z_1^9w_1\xi_1^3+z_2^9w_2\xi_2^3
    \end{equation}
    \begin{equation}
    m_4=z_1^{16}w_1\xi_1^4+z_2^{16}w_2\xi_2^4
    \end{equation}
    \begin{equation}
    m_5=z_1^{25}w_1\xi_1^5+z_2^{25}w_2\xi_2^5
    \end{equation}
    左边的$m$都已知,右边的6个未知数$z_1$, $z_2$, $w_1$, $w_2$, $\xi_1$, $\xi_2$需要求。

    除了Newton-Raphson迭代方法?

  • 絮体的聚并和破碎

    Algorithm
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    李东岳

    目前絮体的聚并和破碎用的什么模型预测的?
    是否有用到PBM?

    http://lib.dr.iastate.edu/cbe_pubs/118/
    这篇文章用PBM模拟聚并行为,不知道和絮体这个是不是很相关。