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  • 请问一下这个是什么软件的仿真?

    CFD彩虹条
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    0_1532484662934_6ade2d8e-6cbc-492d-9683-fcd95f369558-image.png

    图片出自文献《AMESim and 3D CFD EOLE models for Diesel Injection》。

  • 大家平时用vim还是Emacs啊

    CFD彩虹条
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    李东岳

    VIM这面写中文比较麻烦,总需要切换输入法,目前还没找到解决办法。

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    李东岳

    你的理解是正确的

  • sciencedirect总报错?

    CFD彩虹条
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    李东岳

    0_1525756293789_捕获.JPG

    什么原因?

  • 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:

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    @昝磊 好像是做凝固,李喜老师那的:huahua:

  • LES和RANS在代码中实现过程是怎样的?

    Algorithm
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    @浪迹天大 是这样的,我最近也在读OpenFOAM中LES模型,发现Lund提到
    The nearly universal approach is to simply write down the filtered Navier-Stokes equations together with an assumed model for the subgrid-scale stresses and then apply the desired spatial discretization to this “filtered” system. Although it is rarely mentioned, what one is doing by adopting this procedure is to imagine that the finite support of the computational mesh together with the low-pass characteristics of the discrete differentiating operators act as an effective filter. One then directly associates the computed velocity field with the filtered velocity. This procedure will be referred to as implicit filtering since an explicit filtering operation never appears in the solution procedure.
    也就是说OpenFOAM程序除了动态模型外都没有对N-S方程进行显式的滤波操作,那么我们在方程植入中只要修改$\nu_{sgs}$就OK了,我在后面会做几个滤波函数的选择的对比,看看最后结果一样不一样

  • 请教雷诺方程的问题?

    Algorithm
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    @赵一铭 润滑理论的雷诺方程就是NS方程简化了,不考虑厚度方向的压力变化。因为在润滑中动静环之间的液膜很薄,可以认为在厚度方向没有压力变化,是雷诺提出的,就叫雷诺方程了。不知道和那个雷诺是不是一个雷诺。

  • open foam求解浓度的对流扩散

    OpenFOAM
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    bestucanB

    可能的地方太多了。材料、边界条件、初值、计算设置都有可能

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    Prometheus10P

    @李东岳 好的~谢谢东岳老师:xinxin:

  • 加了个8G内存

    CFD彩虹条
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    李东岳

    0_1525409588790_捕获.JPG

  • 转需--

    CFD彩虹条
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    李东岳

    https://www.2025.unsw.edu.au/apply/scientia-phd-scholarships/explore-particle-scale-nature-drug-transport-blood-vessels-cells

    The effective delivery of drug particles or agglomerates from blood vessels to tumour cells is a critical step for their effectiveness in treating the target tumour. This project aims to understand the particle-scale fundamentals in the transport processes by means of unique state-of-the-art numerical techniques. Of particular interests are non-spherical particles transports inside blood vessels, through vessel walls and inside tumour cells, agglomerates breakage, and the effects of key variables. The outcomes will help improve the understanding of underlying micro-scale physical processes that control nanoparticle drug delivery in basic terms, and then provide an effective tool for designing effective drug delivery to targeted regions of clinical importance.

    The applicant is expected to have proven research skills including multiphysics modelling and drug delivery related experiments, research experience in drug delivery or biological process, and demonstrated track record of independent research for example published first-author research papers in high-impact journals.

  • 关于气液两相流边界层y+的确定

    Algorithm
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    李东岳

    能否提供一个关于气液两相流关于y+的文献?可能研究侧重点不同,目前我关注的领域对y+要求不是很严格。

    一般情况下,多相流动湍流要依据连续相而定,因此我的回答是应该根据液体来算。在某些极端情况下,气体的湍流场可以认为和液相湍流场相同。

  • Ubuntu 20 04 阿里云源

    OpenFOAM
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    李东岳
    2204阿里源 deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
  • Icem混合网格设置

    Meshy
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    李东岳

    你的图就是节点对齐。

    有文献里是中心六面体网格,边界层为四面体问题网格。

    你可以试试hex-core,在做体网格的时候,可以成圣hex-core

  • 结构网格

    Meshy
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    J

    @李东岳 感谢李老师。我去学习下:140:

  • 加班文化

    CFD彩虹条
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    李东岳

    今天青年节,下午放假 :chigua:

  • 关于船舶碎冰阻力研究的求助帖

    CFD彩虹条
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    伙伴们!有谁知道国内外哪些机构或者大神做过或者正在做船舶在碎冰中航行的冰阻力数值仿真研究…跪求…

  • Star-ccm两相流仿真

    Fluent
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    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:

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    本人液滴破碎过程模拟不出来,想找人请教一下:mihu:
    图片是我在论文里找的效果图,供参考。
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