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Flash-X / Workflows

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Where can the real parameters of the simulation be found? #2

Closed srzhang90s closed 1 month ago

srzhang90s commented 1 month ago 
          All the quantities are made dimensionless using properties of the fluid. The temperature is scaled using the following relationship,

T_scaled = (T_real-T_bulk)/(T_wall-T_bulk)

You should read some of my papers to get a better understanding of the physics:

https://www.sciencedirect.com/science/article/pii/S0021999124003711?via%3Dihub

Originally posted by @akashdhruv in https://github.com/Flash-X/Workflows/issues/1#issuecomment-2323095731

srzhang90s commented 1 month ago

Hello Akash, I hope you are doing well. Could you please let me know where I can find the real parameters for this tutorial case? For example, where are the values of T_bulk and T_wall given in the code? Thank you so much.

Best, Shawn

akashdhruv commented 1 month ago

The fluid is FC72. Here is the paper:

https://www.sciencedirect.com/science/article/abs/pii/S0017931021009315

srzhang90s commented 1 month ago

The fluid is FC72. Here is the paper:

https://www.sciencedirect.com/science/article/abs/pii/S0017931021009315

Hello Akash, Thank you for your reply. Maybe I didn't describe it clearly. I'd like to know where to set the T_bulk and T_wall in the Flash-X code. Or do these quantities not need to appear in the code? Thank you so much.

akashdhruv commented 1 month ago

You don't supply the values for T_bulk or T_wall, those are baked into the Stefan number calculation. Please read the section 2 of the paper carefully and you should be able to figure it out.

srzhang90s commented 1 month ago

Hello Akash, Thank you so much for your quick response. Yes, I understand.

srzhang90s commented 1 month ago

Hello Akash, I hope you are doing well. I want to know how Mass transfer and Temperature source terms are implemented from a code perspective. Which part should I check specifically? Or do you recommend not looking at the current Workflow version but the latest FlashX version? So which unit is the specific code in? Thank you so much.

Best, Shawn

srzhang90s commented 1 month ago

Hello, should I open another Issue to discuss this? Thank you so much.

akashdhruv commented 1 month ago

Hello please look at the latest version from the main branch and try to understand the structure of the code. Learn how to execute the setup script.

If you want to get deeper into the code you can start from Driver/DriverMain/Incomp/Driver_evolveAll.F90. The file is written so that you can follow along the algorithm. When you are familiar with the structure of the code, the setup scripts, and the Config file, you will be able to locate different subroutines that apply different numerics.

akashdhruv commented 1 month ago

Also please close this issue and open an issue on Flash-X main repo if you have more questions related to the code.

akashdhruv commented 1 month ago

Hello please look at the latest version from the main branch and try to understand the structure of the code. Learn how to execute the setup script.

If you want to get deeper into the code you can start from Driver/DriverMain/Incomp/Driver_evolveAll.F90. The file is written so that you can follow along the algorithm. When you are familiar with the structure of the code, the setup scripts, and the Config file, you will be able to locate different subroutines that apply different numerics.

Referring to the main branch of Flash-X, evaporation and multiphase related forcing are under physics/Multiphase/MultiphaseMain and physics/Multiphase/MultiphaseEvap

akashdhruv commented 1 month ago

You can also use are generative AI tool to help you navigate the source code. See this issue:

https://github.com/Flash-X/Flash-X/issues/778

srzhang90s commented 1 month ago

Dear Akash, Thank you so much for your detailed explanation. It helps me a lot. The generative AI tool is really a great idea.