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我最近也想配一台工作站，导师也不太懂就交给我自己来配了，我之前小打小闹配的第一台机器用的2950x觉得amd挺好的，看到新出的3990x觉得太香了，有没有大佬可以讨论一下具体怎么配置好呀，3990x怎么才能双路并行呀

@肖艺 STAR CCM+
例子： https://www.cfd-schuck.de/en/cfd/anwendungsbeispiele/simulation-of-gear.html

请问各位前辈，有没有界面蒸发源项的模型啊，找了好多都是壁面成核的，因为要做的工况是在气液界面处产生相变，而不是壁面加热导致相变的，看了一些文章好像找到没有one-group下界面蒸发的模型:136:

@yuan_neu 请问icAlpha的作用是什么?

@东岳 又出现了owner和neighbour的概念，以前还以为和i,j,k一样的概念，看来又有知识点需要补咯，谢谢东岳老师

@yuan 好的 谢谢

请教大家一个问题，笛卡尔网格，已知网格8个顶点的坐标，以及网格中心的物理量的值，但网格排序是杂乱无章的，有什么好方法进行后处理呀？

就是下面这个
$$
\frac{\p T_{ij}}{\p x_i\p x_j}
$$
其实$T_{ij}=u_iu_j$，所以演变为
$$
\frac{\p u_iu_j}{\p x_i\p x_j}
$$
这个公式是可以写成$\nabla\cdot(\nabla\cdot(\bfU\bfU))$这种形式，$\frac{\p T_{ij}}{\p x_i\p x_j}$好像写不出来 :134:

大佬们看看？

@zhangshengchang 这个真不知道 哈哈哈 谢谢前辈 我去试一下

网上实在搜不到
作者: J.O. Hinze (Author)
出版社: McGraw-Hill Inc.,US; 2nd Revised edition edition

ISBN: 9780070290372 出版时间: 1975-05

邮箱 yuan_neu@163.com

对于URANS，多了个瞬态项，那每个时间步计算的时均速度（时均动量）都是从第一个时间步开始累加后平均后获得么？

对于$\int_t^{t+\Delta t}$的$\Delta t$，从理论上URANS这个$\Delta t$是任意的，如果不考虑附加的湍流封闭模型如ke之类，$\Delta t$足够的小，就变成了LES，$\Delta t$足够的大，就变成了RANS。然而$\Delta t$并不需要显性的给定。所以对URANS取决定性的还是$\mu_t$

我没太看过相关的讨论。目前这种只有周期性边界才不会发生这种问题。你说的这个问题再往深了我就没关注过了，遗憾，老铁整的挺深啊:146:

I want to keep my bike close by, so I can fix it

I want to take off (remove) the bike wheel

Allen key

It doesn't fit

Move over, scoot over, can I get passed, please

She likes more and more like me everyday

I rarely (don't often) watch TV

Why did you set the temperature to 20 degrees

Dont rush me

I want to get rid of the extra oil

I can take some, I will finish what's left

She has a loose tooth, and its goin to fall out

She is not fully awake, she is a bit groggy

She is the one who loves me the most, she loves me the most

Put on the striped onesie

Move forwards and backwards

Her ton nail is broken

This is her first time seeing it

This drink is non-alcoholic, you can have a sip

Take a big step forward

A loose thread

Lift my leg and put it down

Stick out your tongue

She is lying on her side

I did it all in one go

Do you mind if I add her to our chat?

Please comment on the sentences above

Look at the lines on your arm. You leaned against something, that left lines on your arm.

Pull the handle to open the wardrobe

She just wants to be held up one your shoulder, she just wants to be held close to your chest

I am afraid of the dark

When she is sleeping, how does she know who is beside her

She does not care about anything, she is not easily bothered by things, she has high tolerance. I have a high pain tolerance.

If someone's ideas can be easily influenced by others,

She does not want to lean back

Give yourself a round of applause

Candy wrapper

I am meshing the pataya？？？

Are u scared of mosquitoes biting you?

Do you hear me calling you?

Another spoonful

How about I weigh you?

@李东岳 谢谢老师，我会试试看

@东岳 谢谢教授

Ansys19.1 student，网格超过51.2万时的报错信息：

Error at host: This is an educational executable, and can only be used
with cases containing less than 512000 cells.
Please exit this fluent session and start another session to continue.

Error: This is an educational executable, and can only be used \n with cases containing less than 512000 cells. \n Please exit this fluent session and start another session to continue.
Error Object: #f

e09cef93-36a6-411c-8259-623e46a90966-image.png

@悟空空 图片[6NEU$Q]_ID_9SL@`1VDIPI.png

这已经是比较成熟的方法了 应该aixprocess在15年前就已经成型了 做木材洗涤工艺的除尘优化 如果说无脑的办法 还是直接写碰撞列表做加减法 也可以直接设置某一方质量半径都为0 然后另外一方做简单的质量累加 但是实际上真实的情况比这复杂得多 液固的碰撞的结局以及最后的补集情况是多样性的 这有很多相关文献 但是对于UDF编写来说 因为是不同injection 还是有一定难度的

@李东岳 好的 谢谢:happy: