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Usman1-Visitor
1-Visitor
July 18, 2022
Solved

Thrust on a propeller

  • July 18, 2022
  • 2 replies
  • 4340 views

Hi all, 

I have been trying hard for the last few days to calculate thrust on a propeller, but failed miserably in every attempt. Since there are no detailed videos showing this (or i couldn't find them), can anyone show or tell me here how to do it.

I have tried using rotating wall and non-inertial frame. 

Best answer by cfdgeek

I checked out your model, You only have a propeller there. You need to create a disk around your propeller and setup that disk to MRF or rotating domain. And connect this disk to the external domains.

2 replies

C
cfdgeek13-Aquamarine
13-Aquamarine
July 21, 2022

Hi Are you using CFA or others? for CFA it is pretty easy, you need to use rotating wall and non inertial frame for steady state simulations or moving/sliding mesh for transient simualtions. 

U
Usman1-VisitorAuthor
1-Visitor
July 22, 2022

I tried again today. It seems that whatever rotational speed value I put in the non-inertial frame the results remain the same. 

The boundary conditions i used were:

  • On front of propeller i used specified pressure inlet (101325 Pa) 
  • On back of propeller i used specified pressure outlet (101325 Pa) 
  • The side boundary were all set to wall

Are the boundary conditions wrong or something else? If you can explain the whole process in more detail, it would help me a lot. I have attached the propeller file.

C
cfdgeek13-Aquamarine
13-Aquamarine
July 22, 2022

Hi you need to use MRF or moving/sliding mesh with rotating wall boundary condition. Just use rotating wall BC does not work. Please check this webcast posted by Todd. You can follow the steps there. Thanks.

 

https://community.ptc.com/t5/Analysis/Creo-Flow-Analysis-CFD-201-Webcast-Replay/m-p/707431

 

    A
    AS_109207611-Visitor
    1-Visitor
    January 22, 2024

    Hello . Which package do you use for your simulations. Do i need Creo Flow Analysis Plus to be able to simulate non inertial frames. 

    Currently I use Creo Flow Analysis (Basic) and I am not able to set up the parameters here. 

     

    Best Andreas

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