OpenFOAM::programming::customisedRASmodel::update old code for OF1812+ version

purnp2 · April 27, 2019, 12:23

Hello, community,

1. I have to adopt a RANS model called "Antti Hellsten model, 2005" into OpenFOAM.
It is basically a combination of Menter k-w (SST or BSL) model with an EARSM (Wallin and Johanson) formula (instead of the Boussinesq assumption) for the Raynolds stress.
A few old versions of this code are available on the internet but they were modelled in old versions of OF (three different codes in three different OF versions- v1.7, v2.3.1, and v3.4).
Right now, I am using v1812+.
2. I am willing to pay for your work.
Thank you.

1. Link to the "Antti Hellsten model, 2005":
https://drive.google.com/file/d/1EJ7...ew?usp=sharing
2. Link to different EARSM models available on the internet:
https://drive.google.com/drive/folde...7v?usp=sharing

purnp2 · May 19, 2019, 18:56

The Antti Hellsten model is a combination of <Menter 2003 kOmegaSST model> and <Wallin&Johanson EARSM model for stress-strain relation>.

I am still looking for a free-lancer/.

thanks.

fxzf · May 28, 2019, 06:37

Hi Purn,

Thanks very much for sharing EARSM.

I also tried to program it and I found I got some weird result when my mesh Y+ is not 1.

I am wonder if we need to change some terms in wall function link omegaWallFunction, nutUSpaldingWallFunction and even nutkRoughWallFunction?

Cheers

purnp2 · May 28, 2019, 12:13

Hello, FF,

Which version of OF are you using?

Someone helped me on a Facebook group to find HellstenEARSM for OF1812+. Check the link below:
https://github.com/furstj/myTurbulen...enceModels/RAS

And, sorry, I am not familiar with the functions you have written in your post. I used the EARSM model from Dr Furst (owner of the above GitHub library) and then added a few functions required for building a transition model (Kubacki-Dick transition model) which is topic of my project.

Hope it helps.
Thanks.

April 27, 2019, 12:23	OpenFOAM::programming::customisedRASmodel::update old code for OF1812+ version	#1
purnp2 New Member Purn Prakash Join Date: Nov 2018 Posts: 27 Blog Entries: 1 Rep Power: 7	Hello, community, 1. I have to adopt a RANS model called "Antti Hellsten model, 2005" into OpenFOAM. It is basically a combination of Menter k-w (SST or BSL) model with an EARSM (Wallin and Johanson) formula (instead of the Boussinesq assumption) for the Raynolds stress. A few old versions of this code are available on the internet but they were modelled in old versions of OF (three different codes in three different OF versions- v1.7, v2.3.1, and v3.4). Right now, I am using v1812+. 2. I am willing to pay for your work. Thank you. 1. Link to the "Antti Hellsten model, 2005": https://drive.google.com/file/d/1EJ7...ew?usp=sharing 2. Link to different EARSM models available on the internet: https://drive.google.com/drive/folde...7v?usp=sharing Last edited by purnp2; May 12, 2019 at 19:27.

May 19, 2019, 18:56	Update	#2
purnp2 New Member Purn Prakash Join Date: Nov 2018 Posts: 27 Blog Entries: 1 Rep Power: 7	The Antti Hellsten model is a combination of <Menter 2003 kOmegaSST model> and <Wallin&Johanson EARSM model for stress-strain relation>. I am still looking for a free-lancer/. thanks.

May 28, 2019, 06:37	How about wall functions for EARSM	#3
fxzf Member ff Join Date: Feb 2010 Posts: 81 Rep Power: 16	Hi Purn, Thanks very much for sharing EARSM. I also tried to program it and I found I got some weird result when my mesh Y+ is not 1. I am wonder if we need to change some terms in wall function link omegaWallFunction, nutUSpaldingWallFunction and even nutkRoughWallFunction? Cheers

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May 28, 2019, 12:13		#4
purnp2 New Member Purn Prakash Join Date: Nov 2018 Posts: 27 Blog Entries: 1 Rep Power: 7	Hello, FF, Which version of OF are you using? Someone helped me on a Facebook group to find HellstenEARSM for OF1812+. Check the link below: https://github.com/furstj/myTurbulen...enceModels/RAS And, sorry, I am not familiar with the functions you have written in your post. I used the EARSM model from Dr Furst (owner of the above GitHub library) and then added a few functions required for building a transition model (Kubacki-Dick transition model) which is topic of my project. Hope it helps. Thanks.