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Originally Posted by alberto

Hi,

both limitedLinear and linearUpwind are bounded. What is different is how the boundness of the scheme is obtained (see table 4.10 of User's guide).

• limitedLinear is the linear scheme stabilized with the introduction of a limiter (Sweby limiter)
• linearUpwind in an upwinded scheme

About their accuracy, limitedLinear is in my experience slightly less diffusive, but I had good results with both the schemes.

I believe the second order upwind scheme in commercial

Originally Posted by chegdan

I am a writing about the schemes that I used in my simulations in my thesis and could use some clarification on the linearUpwind and limitedLinear schemes. I have read http://www.cfd-online.com/Forums/ope...r-schemes.html and Alberto did a good explanation, but I need a little more clarification.

linearUpwind:

I know linearUpwind is second order and bounded by a limiter (e.g. cellMDLimited from http://www.cfd-online.com/Forums/ope...lllimited.html).

Originally Posted by stevenvanharen

Just deleting is not a good idea. Just use stitchMesh.

After using stitchMesh you will see the boundaries are still present in the boundary file bu they will contain 0 faces. You can just delete them from this file in this case (don't forget to change the number of boundaries at the top of the boundary file).