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Showing results 1 to 11 of 11 Search took 0.00 seconds. Search: Posts Made By: enricokr

Forum: FLUENT March 29, 2009, 15:25

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr I repost the former question: Changing URF of... I repost the former question: Changing URF of pression from 0.3 to 0.1 i have the result i want, but is it a correct method? And what means to decrease URF? Does anyone know it?

Forum: FLUENT March 27, 2009, 13:29

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr Why i have to use a transient solver if the... Why i have to use a transient solver if the problem is steady?

Forum: FLUENT March 27, 2009, 11:03

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr Yes i'm using double precision... Your results... Yes i'm using double precision... Your results at the number of iterations you indicate aren't the same of mine... I don't know why! Changing URF of pression from 0.3 to 0.1 i have the result i...

Forum: FLUENT March 27, 2009, 09:29

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr Can i change under relaxed factor for pressure... Can i change under relaxed factor for pressure from 0.3 to 0.1? With this value residuals decrease... I don't know why the simulation converge with my settings to you but not to me ... Can it be the...

Forum: FLUENT March 27, 2009, 03:53

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr I have to try to refine mesh along x direction,... I have to try to refine mesh along x direction, but i don't understand what about transient analisys...

Forum: FLUENT March 27, 2009, 00:49

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr no other proposals? no other proposals?

Forum: FLUENT March 25, 2009, 03:27

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr I post you same images with info: ... I post you same images with info: http://www.ninarello.it/grid.jpg http://www.ninarello.it/grid2.jpg http://www.ninarello.it/geometry.jpg This is a rar with the case and date file:...

Forum: FLUENT March 24, 2009, 08:50

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr Done! I start second order after running first... Done! I start second order after running first order... http://www.ninarello.it/order2.jpg

Forum: FLUENT March 24, 2009, 04:56

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr Yes, i have tried. But the result is the same.... Yes, i have tried. But the result is the same. Sometimes it is worse than others. Did you think that could be the mesh?

Forum: FLUENT March 23, 2009, 09:53

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr Residual limits are at 10e-12 Increasing number... Residual limits are at 10e-12 Increasing number of iterations is not useful because the residuals remains constant after a certain number of iterations. Constant at 10e-1.

Forum: FLUENT March 22, 2009, 09:01

Replies: 28 Second Order Upwind: Residuals Views: 12,549 Posted By enricokr Second Order Upwind: Residuals In a pipe sudden expansion simulation, with first order upwind i have no problems with residuals, but when i switch to second order upwind the residuals remain constants at 10e-1. Why? What i have to...

Showing results 1 to 11 of 11

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