Help with CFD Dust Collection flow sim

[Simon.robertsX5M9D]

Hi All

Need some help with a project am doing to check the flow (dust collection unit) has shown below.

I don’t know how to setup the CFD to show me the flow when sucking from the suction port from the main opening has shown below, my thoughts are it’s not very efficient because of the opening being so wide, so like to try narrow version too.

Have attached the IPT file 

Thanks Simon

[marwan_azzam]

Hello Simon,

For starters, it seems your model is missing an air volume as shown below.

You can setup the model after adding that volume.

[Simon.robertsX5M9D]

Hi Marwan

thanks for the reply, how do i add air volume in the model, am a newbie to CFD 

[marwan_azzam]

Hi Simon,

That volume cannot be generated in CFD. You need to create it in the CAD environment.

Marwan

[Simon.robertsX5M9D]

Thanks marwan

Is this the correct way to create the volume? have also attached the model

[marwan_azzam]

Yes, This geometry looks right.

Marwan

[Simon.robertsX5M9D]

Ok thanks

next question, i have set the boundaries etc , if am using flow, suction how do i sent up the boundaries please?

just tried with pressure sent has shown below

[marwan_azzam]

Hello Simon,

The way you have the BCs will not result in any flow. There is no pressure differential or anything else to drive the flow.

If you know the pressure drop you can apply that on the one end.

Otherwise you can apply a velocity or flow rate on one end and a P=0 on the other.

Marwan