[hellsblade.91]

Hi

I want to check the air flow from my inlet(attached in the pic ) the 3 holes at the bottom represent my inlet approx 6 mm dia and at the top there is an opening which is the outlet . I basically need to see what difference would it make to the air flow when there are more inlets (3 or 5) or else the wall thickness is reduced in the current simuln it is 2 mm .

My question while meshing how much should i tarket my skewnes the currently value i am getting is 0.8-0.9 whereas 0.25 is generally taken for better results kindly give your inputs ?

[Fole]

I think that value of skewness is ok, but I know that from user manuals, no my experience.

In fact, a skewed grid can give a good solution. It seems that there are no grid indexes for accuracy behorehand. Judgement can be donde after simulation. I started to read into the topic through the following weblink: https://blog.pointwise.com/2012/07/0...-mesh-quality/

Regards.

[hellsblade.91]

Also my inlet is pressure inlet and outlet is mass flow outlet i am getting reverse flow on pressure inlet how can i rectify this

[e_cfd]

I guess, since the pressure difference at the in/oulet is important, you can increase the pressure at the inlet to avoid the reverse flow.

By the way, why dont you change the inlet to mass flow BC and outlet to pressure outlet? Are there any special reasons?

[hellsblade.91]

Basically i am using the inlet as pressure inlet as i want the fluid to be at a certain pressure 6 bar also my mesh skewness is 0.71 at the moment could the mesh also be a reason