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Search: Posts Made By: Martin Hegedus
Forum: Main CFD Forum August 3, 2011, 11:39
Replies: 8
Views: 3,655
Posted By Martin Hegedus
Hard to say if it is significant. I'm guessing...

Hard to say if it is significant. I'm guessing that the spitback results are transitory? Maybe steady state would be different. This is where analysis/CFD and experimentation would come in...
...
Forum: Main CFD Forum August 2, 2011, 16:32
Replies: 8
Views: 3,655
Posted By Martin Hegedus
Since a picture is worth a thousand words, I've...

Since a picture is worth a thousand words, I've attached a panel solution (Aero Troll + PANAIR) for a stretched donut.

When the flow is entering the donut it sees the minimum pressure at the...
Forum: Main CFD Forum August 2, 2011, 15:26
Replies: 8
Views: 3,655
Posted By Martin Hegedus
Oh, one more thing. I wrote that the entrance...

Oh, one more thing. I wrote that the entrance and exit should look similar. Not really true. If you are trying to optimize this, the two will look different. For the entrance to the box, the flow...
Forum: Main CFD Forum August 2, 2011, 15:08
Replies: 8
Views: 3,655
Posted By Martin Hegedus
Sort of. But the right and left side should look...

Sort of. But the right and left side should look similar. In the case above, and this is a total guess, the flow going right to left may be more efficient. If the flow were going left to right...
Forum: Main CFD Forum August 2, 2011, 14:19
Replies: 8
Views: 3,655
Posted By Martin Hegedus
Do you want the fluid to go through at a maximum...

Do you want the fluid to go through at a maximum velocity or mass flow rate?

A flipped velocity stack is a diffuser. To minimize losses you would have a diffuser when entering the box and a...
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