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  • LES控制方程如何得到的?

    Algorithm
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    @李东岳 收到,谢谢李老师。

  • 粘度和TFM的适应性问题

    Algorithm
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    WeakFormW

    @李东岳 谢谢李老师,我再多看看文献

  • 渐扩管网格划分求助

    Meshy
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    S

    @simthere
    icem默认的节点参数复制是依据目标edge的长度按比例进行复制的

    如果第一层网格高度都为0.8的话,可以在edge参数设置页面里勾选Copy Absolute

    :cheeky: :cheeky:

    问题解决

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    Y

    如题,需要做一个全反射边界,希望有库可以参考

  • 数组变量边界条件的设置

    OpenFOAM
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    Y

    @李东岳 谢谢。我将原代码放入了另外一个求解器中就没有了这种问题,可能是路径的问题

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    疏影横斜水清浅

    @疏影横斜水清浅 自问自答吧,是组合公式
    1f3e206f-d460-45ee-9db8-ffeb3cf340df-image.png
    C(k,i)

  • 回复kscandal

    Meshy
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    Dream_ChaserD

    回复: 两个相切的圆如何进行关联
    @kscandal
    同学,我说的话,你确定,你懂?

  • 不可压缩的NS方程问题

    Algorithm
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    姜宏伟

    @闹市闲民 再给推荐一本粘性流体力学教材,个人亲测食用最佳:chitang: 7d7a70c8-f0cf-4676-b460-7866a9178ba8-image.png

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    最近看到一种说法,level set方程是简化版的相场方程,结合这三种方法在方程形式上非常相似,不知道从计算精度、计算量等方面来讲,这三个方法的优缺点有没有什么对比性结论?

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    V

    您好!请问您还有当时无反射边界条件那段的代码吗?我想借看一下,理解后改一改。谢谢

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    P

    英国谢菲尔德大学(The University of sheffield)Energy2050团队(http://energy2050.ac.uk)在招一个做CFD方向的全奖博士,做旋转填料床反应器捕捉二氧化碳的CFD仿真研究,对此职位感兴趣的研究生或者优秀本科毕业生可以申请(可直博),目前的申请截止日期是2022年7月22日(可能推迟),如来不及,入学时间可推迟到明年一月。

    谢菲尔德大学,世界百强名校,著名的CFD仿真软件Fluent的发源地,课题组学术氛围很好,适合静心搞科研。课题组在CFD领域有几十年的研究基础,在CCUS领域有丰富的研究资源,课题紧扣国内火热的"双碳"主题,该细分方向组里有7年的研究基础了,可以在前人的基础上接着做。

    具体招聘信息如下:
    We have a fully funded PhD studentship and look for applicants open to both UK and international students: Engineering doctorate (EngD): Predicting performance of intensified carbon capture inside rotating packed beds using CFD modelling

    If you know any good students from China, or the UK, please encourage them to apply.
    Any questions then let them to contact Professor Lin Ma: https://www.sheffield.ac.uk/mecheng/people/academic/lin-ma

    The advert is on findaphd.com: https://www.findaphd.com, search for the project 搜索 predicting performance of intensified carbon capture inside rotating packed beds using cfd modelling。

    或直接通过以下链接:https://www.findaphd.com/phds/project/engineering-doctorate-engd-predicting-performance-of-intensified-carbon-capture-inside-rotating-packed-beds-using-cfd-modelling/?p145128#opennewwindow

    Please make sure that they apply through the university of sheffield website: https://www.sheffield.ac.uk/postgraduate/phd/apply/applying.

    课题介绍:

    Carbon capture is considered the only technology able to decarbonise the hard-to-abate industries. many of these industries utilise legacy sites with little space for large new unit operations required in conventional carbon capture. rotating packed beds (RPB) look to solve this problem by intensifying carbon capture and reducing the footprint required by up to ten times, while also significantly decreasing the capital cost of these units. when combined with proprietary solvents, it is believed the cost of capture can be reduced to $30/tonne CO2 in some cases, helping to enable the rapid uptake of carbon capture and progression towards net zero.

    RPB are a novel technology that utilise the principles of process intensification to enhance the performance of mass transfer processes between fluids. given the application of rpb to the field of CO2 capture is relatively new, there is uncertainty regarding the impact of different process variables on the performance of the rpb that would otherwise require a significant amount of practical experimentation to investigate. computational fluid dynamics can enable the process to be accurately modelled, allowing for quick and inexpensive prediction of performance under various conditions.

    In this project a rotating packed bed absorber will be modelled in ansys fluent, with validation of the model’s outputs through use of the 1 tonnes of co2 per day (TPD) pilot-scale rotating packed bed absorber at the university of sheffield’s translational energy research centre. Initial research will involve investigating the impact of operational conditions and physical properties of the solvent on capture performance. As the project continues, the scope will widen to include sensitivity analysis of design parameters and the impact of scaling the RPB absorber on the existing project outputs and learnings. Additionally, further rotating unit operations could also be investigated.

    This project will utilise and develop your knowledge surrounding CFD modelling, mass and heat transfer, reaction kinetics and chemical equilibria. You will work closely with carbon clean, a global leader in the development of carbon capture technology and pioneers in the use of RPB for industrial decarbonisation. Your findings could directly impact the design and operation of commercial working carbon capture facilities, supporting the pathway to net zero.

    We are seeking applicants to start in september 2022.

    The project will be part of the EPSRC-supported centre for doctoral training in resilient decarbonised fuel energy systems. The student who undertakes it will be one of a cohort of over 50 students in a broad range of disciplines across the universities of sheffield, nottingham and cardiff.

    The research work will be based in the energy research group within the department of mechanical engineering and the translational energy research centre (TERC) at sheffield which is a brand new, high profile, innovation focused national research facility. You will be working within an exciting and dynamic group with approximately over 60 researchers undertaking a broad area of energy research with approximately three years' extensive research time in industry, preparing for high-level careers in the energy sector.

    Funding notes
    The studentship will cover full university fees and a tax-free, enhanced annual stipend of £20,352, including £16,062 (2022/2023) a year for four years and a stipend enhancement of £3,750 per annum.

    英国的全奖机会非常少,机会难得,欢迎各位优秀的CFDer申请!

  • 2D欧拉拉格朗日计算

    Algorithm
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    李东岳

    @aiweimo 也行,有链接不

  • 怎么对标量场进行体积积分求总量

    OpenFOAM
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    李东岳

    嗯,之前属于设置上的疏忽,现在已经更改,参见 http://www.cfd-china.com/topic/223/

    “CFD中文网”为了知识的可追溯性,在用户发帖10分钟后不可更改以及删除帖子,因此在发帖、回帖之前,请对内容仔细考量,有删帖需求请联系我;

    类似制度参考小木虫和cfd-online

  • 质量入口概念问题

    Fluent
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    @a602657563 谢谢同志解答,你讲的很精炼,我同意你的观点,应该是这个笔者自己没弄清楚入口的概念问题,入口要么就是指定压力,要么就是指定速度,而且你讲的initial pressure很准确,只是给定一个初始条件值,而不是计算初始值。

  • 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。

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    L

    @walten 好的 感谢提醒

  • cent换清华源

    CFD彩虹条
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    李东岳
    sed -e 's|^mirrorlist=|#mirrorlist=|g' \ -e 's|^#baseurl=http://mirror.centos.org|baseurl=http://mirrors.tuna.tsinghua.edu.cn|g' \ -i.bak \ /etc/yum.repos.d/CentOS-*.repo yum clean all && yum makecache
  • ANSYS ICEM热键

    Meshy
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    R

    z 和 x 用得最顺。

    其他的还在熟悉中。

  • 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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    Q

    @cfd-china Patient-specific computational fluid dynamics structured mesh
    以上是关键字,搜一下应该就有