Learning Forum

[Keith Sequeira]

Hi 

Im trying to model the flow of hot air out of a pipe and into a domain. Ive modelled the pipe in spaceclaim both with an open and close end and have built an enclosure around it. I'm trying to use the combine tool to subtract both bodies as ive heard it works to simulate flow leaving the pipe and not flowing through it. But i am facing an error " Unable to Intersect". I dont know what i could do to rectify this issues and to start with simulations. I am attaching a picture of the geometry i am to achieve and would appreciate any assistance on the matter

[Devendra Badgujar]

Hello Keith,

From what I understand, there seems to be issue with how they have been modeled. You can refer this CHT Analysis in Ansys Discovery IGBT model to understand how to model this and how to create a flow domain. 

From the image its difficult to find the inlet, outlet for your flow, if you can share a image of similar example to this in SpaceClaim will be better to understand? 

Regards,

Devendra 

[Keith Sequeira]

Hello Devendra, 

I have attached an image explaining the same albeit with scaled down dimensions of the entire domain. Please do let me know if you need any more information.

[Devendra Badgujar]

Hello Keith, 

When creating an enclosure around the bodies included those will get subtracted from he fluid directly. If you refer this Discovery SpaceClaim: Model Prep for CAE & MFG - Automatic External Volume Enclosure - Ansys Knowledge you will learn how to create external flow volume i.e enclosure in SpaceClaim.

From the image not sure how you will be defining the inlet and outlet. Fluid should enter that inlet and come out from it and than towards the outlet you highlighted right? 

Regards, 

Devendra

[Keith Sequeira]

Hi Devendra,

Yes, the picture highlights how I would like air to leave the pipe. So I did try to subtract the model using the combine tool but was facing an error with interesecting bodies not being found. I'm not sure if it is because of the cushion values I've given to my domain.

[Devendra Badgujar]

Hi Keith, 

I am thinking that your enclosure already has the inlet body subtracyted from it, you can check that by making the body transperent. 

[Keith Sequeira]

The video was very useful! Do you have any tutorials to mesh the same ?

 

[Devendra Badgujar]

Hello Keith, 

Are you using Fleunt for this?

Regards,

Devendra