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Showing results 1 to 8 of 8 Search took 0.00 seconds. Search: Posts Made By: Natali_Beginner

Forum: FLUENT April 21, 2013, 12:43

Replies: 15 Steady and Unsteady nature Views: 2,236 Posted By Natali_Beginner Yes, actually in my problem there are different... Yes, actually in my problem there are different time-scales and that's why I have to use very small time-step.

Forum: FLUENT April 21, 2013, 11:56

Replies: 15 Steady and Unsteady nature Views: 2,236 Posted By Natali_Beginner oh. That is exactly a confusing stuff that I am... oh. That is exactly a confusing stuff that I am struggling with that. I had tried to run the case with 1e-6 s and 1e-2 s, before. However, it seems many phenomena are ignored when time-step is large....

Forum: FLUENT April 21, 2013, 11:47

Replies: 15 Steady and Unsteady nature Views: 2,236 Posted By Natali_Beginner Sorry, I am confused. I don't get what exactly... Sorry, I am confused. I don't get what exactly you say.

Forum: FLUENT April 21, 2013, 11:33

Replies: 15 Steady and Unsteady nature Views: 2,236 Posted By Natali_Beginner The time-step I am using is 1e-6 s. In fact, I... The time-step I am using is 1e-6 s. In fact, I always use lower time-step to be safe. Regarding the convergency, I just check the changes in flow parameters and since for a long time no changes...

Forum: FLUENT April 21, 2013, 00:23

Replies: 15 Steady and Unsteady nature Views: 2,236 Posted By Natali_Beginner I didn't try that but for sure the steady state... I didn't try that but for sure the steady state solution is converged. I checked that by observing several flow characteristics, as well as checking the changes in mass flow rates, friction coeff,...

Forum: FLUENT April 20, 2013, 17:15

Replies: 15 Steady and Unsteady nature Views: 2,236 Posted By Natali_Beginner Thanks for your answer, Yes, all the conditions... Thanks for your answer, Yes, all the conditions are the same. I did grid study as well. So, there is no place to consider difference between the results. I saw that the flow characteristics remain...

Forum: FLUENT April 19, 2013, 20:16

Replies: 15 Steady and Unsteady nature Views: 2,236 Posted By Natali_Beginner Thanks for your answer, But, after some times,... Thanks for your answer, But, after some times, the unsteady flow should be steady. Am I right? So, why at that time the characteristics are not the same? like heat transfer coefficient?

Forum: FLUENT April 19, 2013, 19:25

Replies: 15 Steady and Unsteady nature Views: 2,236 Posted By Natali_Beginner Steady and Unsteady nature Hello, I am very beginner in CFD, sorry that I ask this question. I am wondering how to compare a problem in steady and unsteady. Because I think any problem that is steady can be solved unsteady...

Showing results 1 to 8 of 8

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