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

Forum: Fluent UDF and Scheme Programming July 24, 2018, 04:05

Replies: 16 Zero gradient boundary condition Views: 6,362 Posted By pakk OK, I see what you mean now with no-penetration... OK, I see what you mean now with no-penetration condition. In 99.99% of all applications, the no-penetration condition holds on a wall, and otherwise I would not really call it a wall. But I am...

Forum: Fluent UDF and Scheme Programming July 23, 2018, 02:42

Replies: 16 Zero gradient boundary condition Views: 6,362 Posted By pakk Can you explain what you mean with "penetration... Can you explain what you mean with "penetration condition" and what you mean with "slip velocity between scalar velocity and fluid velocity"? The only slip velocity I know is the slip velocity...

Forum: Fluent UDF and Scheme Programming March 17, 2017, 07:29

Replies: 16 Zero gradient boundary condition Views: 6,362 Posted By pakk I don't understand what you mean. Zero flux... I don't understand what you mean. Zero flux is NOT the same as zero value. You ask for zero flux, so you get zero flux. You did not ask for zero value, so you did not get zero value. How...

Forum: Fluent UDF and Scheme Programming March 17, 2017, 04:30

Replies: 16 Zero gradient boundary condition Views: 6,362 Posted By pakk The right one has zero flux on all the walls. ... The right one has zero flux on all the walls. The left one has zero flux one the upper walls, and zero value on the lower walls. These are different boundary condtions. Why would you expect them...

Forum: Fluent UDF and Scheme Programming March 14, 2017, 10:23

Replies: 16 Zero gradient boundary condition Views: 6,362 Posted By pakk Zero gradient is the same as zero flux, so you... Zero gradient is the same as zero flux, so you want the flux to be zero. So what should you write after it... Zero!

Forum: Fluent UDF and Scheme Programming September 11, 2014, 02:45

Replies: 16 Zero gradient boundary condition Views: 6,362 Posted By pakk At a wall (where no 'background flow' can go... At a wall (where no 'background flow' can go through), zero flux UDS is the same as zero gradient UDS normal to the wall.

Showing results 1 to 6 of 6

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