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Search: Posts Made By: skeptik
Forum: OpenFOAM Programming & Development July 28, 2015, 01:38
Replies: 70
Views: 6,871
Posted By skeptik
We're using rod-airfoil case from Jacobs article....

We're using rod-airfoil case from Jacobs article.

But, as i learnt from publications the problems of such type (wind-tunnel) needs corrections. I think I can something say about it only later.
Forum: OpenFOAM Programming & Development July 27, 2015, 09:28
Replies: 70
Views: 6,871
Posted By skeptik
It's still under development.

It's still under development.
Forum: OpenFOAM Programming & Development July 27, 2015, 09:08
Replies: 70
Views: 6,871
Posted By skeptik
Nice suggestion. We shall implement it in...

Nice suggestion.

We shall implement it in our version. Sadly i didn't dig into Kraposhin code to save time for FWH. But your posts are very valuable. Thank you.

But i will say to Matvey what...
Forum: OpenFOAM Programming & Development July 27, 2015, 08:26
Replies: 70
Views: 6,871
Posted By skeptik
Have you changed something in code for 2.4 or it...

Have you changed something in code for 2.4 or it has been compiled sucessfully without changes?
Forum: OpenFOAM Programming & Development July 22, 2015, 02:13
Replies: 70
Views: 6,871
Posted By skeptik
Wow. We spent a huge time and resources...

Wow.
We spent a huge time and resources investigating different numerical schemes, may be we should try something like yours. Despite such errors you get good results, something in your fvSchemes...
Forum: OpenFOAM Programming & Development July 21, 2015, 10:35
Replies: 70
Views: 6,871
Posted By skeptik
Why laplacian laplacianSchemes { ...

Why laplacian


laplacianSchemes
{
div(phi,U) Gauss LUST grad(U);
div(phi,nuTilda) Gauss linearUpwind grad(nuTilda);

div((nuEff*dev(T(grad(U))))) Gauss linear;
}
Forum: OpenFOAM Programming & Development July 21, 2015, 04:29
Replies: 70
Views: 6,871
Posted By skeptik
Very nice results. I have few questions to...

Very nice results.

I have few questions to clarify DDES-related problems:
1. Did you measure y+? How much is it?
2. What's about wallFunctions? Did you use it? (connected to 1. question)
3. Can...
Forum: CFD Freelancers June 11, 2015, 02:50
Replies: 4
Views: 444
Posted By skeptik
Hello, you can contact with me. Depends...

Hello,

you can contact with me.

Depends what you want to get from simulation results.

To calculate integral characteristics of the flow, i need mass flow at the inlet or pressure drop.
Forum: OpenFOAM Programming & Development June 4, 2015, 02:45
Replies: 70
Views: 6,871
Posted By skeptik
If you solve 2D problem dRef is your mesh dZ. ...

If you solve 2D problem dRef is your mesh dZ.
If you solve 3D problem assign to dRef any negative value.
Forum: OpenFOAM Programming & Development June 1, 2015, 07:07
Replies: 70
Views: 6,871
Posted By skeptik
It's nice question and nice challenge. We're...

It's nice question and nice challenge. We're developing FWH in addition to Curle now and if you find some errors in libAcoustics, please, report. I hope we will have a time to review old versions and...
Forum: OpenFOAM Programming & Development June 1, 2015, 04:51
Replies: 70
Views: 6,871
Posted By skeptik
True. Sadly i've not developed this version of...

True. Sadly i've not developed this version of the Curle analogy, i've only adopted for 2.3 to work with it. May be we will make a revision and develop a new version.

It was found at least one...
Forum: OpenFOAM Programming & Development June 1, 2015, 02:39
Replies: 70
Views: 6,871
Posted By skeptik
Here is a work about cavity aeroacoustic...

Here is a work about cavity aeroacoustic measurements, for instance
...
Forum: OpenFOAM Programming & Development May 29, 2015, 08:31
Replies: 5
Views: 320
Posted By skeptik
To whom it may concern... When you re-use...

To whom it may concern...

When you re-use some code, better to re-name name of the classes and functions. So such errors does not appear.

You can take a look at Jens Höpken presentation "A...
Forum: CFD Freelancers May 21, 2015, 03:43
Replies: 5
Views: 382
Posted By skeptik
hello. I'm an aerodynamicist from Russia....

hello.

I'm an aerodynamicist from Russia. Working primarily with open-source and free codes. Have a possibility to use HPC.

Your challenge is quite interesting, but i'm not sure how serious...
Forum: OpenFOAM Programming & Development April 7, 2015, 08:55
Replies: 70
Views: 6,871
Posted By skeptik
Updated Curle library

Hey all.

You can find updated libAcoustics with Curle analogue for OpenFOAM 2.3.0 through following link.

https://unihub.ru/resources/625

Thanks.
Forum: CFD Freelancers March 11, 2015, 03:08
Replies: 2
Views: 485
Posted By skeptik
4 days too short to develop a solver. I can set...

4 days too short to develop a solver.
I can set up an OpenFoam case and solve it for 50$.
PayPal or bitcoin (better).
Forum: OpenFOAM Native Meshers: snappyHexMesh and Others October 6, 2014, 02:38
Replies: 23
Views: 2,486
Posted By skeptik
Not for shappyHexMesh. If you want pure hex mesh...

Not for shappyHexMesh. If you want pure hex mesh use blockMesh.
Forum: CFD Freelancers October 3, 2014, 02:55
Replies: 4
Views: 1,002
Posted By skeptik
I can

Good day.

I can do it for you.
To ensure in my skills you can visit my blog on cfd-online,
http://www.cfd-online.com/Forums/blogs/skeptik/

Thanks,
Ilya.
Forum: CFD Freelancers March 31, 2014, 09:35
Replies: 3
Views: 1,369
Posted By skeptik
OpenFOAM CFD, DAKOTA optimisation tool. Hold...

OpenFOAM CFD, DAKOTA optimisation tool.

Hold a master degree in aerospace and PhD in applied physics. I can send my CV.

If you're interested, please, do not hesitate to contact.
Forum: OpenFOAM Post-Processing March 28, 2014, 06:29
Replies: 3
Views: 1,016
Posted By skeptik
yes, i've got it

yes, i've got it
Forum: OpenFOAM Post-Processing March 28, 2014, 06:21
Replies: 3
Views: 1,016
Posted By skeptik
Do you have any success in efficiency or...

Do you have any success in efficiency or calculations of another parameters (like torque)?
Forum: OpenFOAM Running, Solving & CFD March 28, 2014, 05:56
Replies: 7
Views: 2,794
Posted By skeptik
1. Of course people from this theme forgot their...

1. Of course people from this theme forgot their cases, but for newest ones google is working.
2. Yes, i'm using wall functions and all variables are calculated but it needs initial values anyway....
Forum: OpenFOAM Running, Solving & CFD March 28, 2014, 04:43
Replies: 7
Views: 2,794
Posted By skeptik
Turbulence convergence problems

I have had all described problems in my 2-blade rotor case.

It seems that the solution should be such as written below:

1. upwind schemes for K and Omega
2. low 1e-6 meanings for both...
Forum: OpenFOAM Programming & Development March 17, 2014, 09:17
Replies: 70
Views: 6,871
Posted By skeptik
Did you try OF 2.1? Although it was...

Did you try OF 2.1?

Although it was mentioned in libAcou documentation that it was developed for OF 2.1 and later, i'd suppose to compile it for OF 2.1
Forum: Main CFD Forum February 25, 2014, 05:46
Replies: 5
Views: 427
Posted By skeptik
Ни опен-сорс? Короче, я могу попробовать...

Ни опен-сорс?

Короче, я могу попробовать прогнать пример с КС, получить какой-нибудь csv, но не сейчас.
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