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Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: Simbelmynë

Forum: Main CFD Forum October 31, 2013, 07:01

Replies: 10 The old Hex vs Tet question Views: 1,595 Posted By Simbelmynë Yes thank you. Do you mean for me to do the... Yes thank you. Do you mean for me to do the exercises like the ones I did in post 5 in this thread or is it something else? First and second order has no effect on the diffusion if the triangular...

Forum: Main CFD Forum October 31, 2013, 06:36

Replies: 10 The old Hex vs Tet question Views: 1,595 Posted By Simbelmynë 1. Ok. So how does this numerical diffusion work,... 1. Ok. So how does this numerical diffusion work, what is the reason for no (small) diffusion when we have the correct direction AND the correct position? 2. Textbooks talk about numerical...

Forum: Main CFD Forum October 28, 2013, 13:14

Replies: 10 The old Hex vs Tet question Views: 1,595 Posted By Simbelmynë Yes. So does a tri mesh have three preferred... Yes. So does a tri mesh have three preferred directions (low numerical diffusion) as opposed to two directions for quad elements? If yes, then it seems to me that polyhedral elements would be...

Forum: Main CFD Forum October 28, 2013, 10:21

Replies: 10 The old Hex vs Tet question Views: 1,595 Posted By Simbelmynë Ok so here are some 2d simulations with a... Ok so here are some 2d simulations with a commercial software. The setup is a square domain with inflow at west and south boundary at a 45 degree angle. A passive scalar is introduced with a...

Forum: Main CFD Forum October 28, 2013, 08:57

Replies: 10 The old Hex vs Tet question Views: 1,595 Posted By Simbelmynë Hi, 1. How is the second statement related... Hi, 1. How is the second statement related to the first statement? 2. Do you mean that we need more cells in order to reduce numerical diffusion? 3. Numerical diffusion is affected by mesh...

Forum: Main CFD Forum October 28, 2013, 06:58

Replies: 10 The old Hex vs Tet question Views: 1,595 Posted By Simbelmynë The old Hex vs Tet question Hi, For non-specific flows: 1. Hex is always better than Tet when it comes to accuracy. 2. No, Tet is as good as Hex if both solutions are mesh independent, although Tet require more cells to...

Showing results 1 to 6 of 6

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