[ghost82]

Originally Posted by rshbhb

In the mesh you all had made, did you use (or when shall i use) the reverse orientation option while hard linking the mesh (in the 'link mesh faces' option).

Do I use it

for 1. the top and bottom periodic faces, OR
2. the vertical periodic side faces, OR
3. should I use this option at all.

Daniele Sir had provided me with this link: http://www.cfd-online.com/Forums/flu...periodics.html

in which there is a mention that we have to take the direction of the arrows same for both the faces but it not coming out to be same whatever I do. (Is it wrongly written?).
Here is the picture for better understanding.


THanks !!

Hi,
see this link for link faces:
http://202.118.250.111:8080/fluent/G...ce_link_unlink

Yes, select reverse orientation, since arrows are in opposite directions.

[rshbhb]

Dear Sir,

You had once mentioned that TECPLOT could be used to get the attached picture?
1.could you explain me how to do it in TECPLOT (as I am not getting both contours and velocity vector in one picture.)

I have simulated the results for different ang. vel. & geometries but only for 10,30 and 45 deg meshs.

1.But for nicer interpretation I want to know the particle pathline for the complete 360 degs or any other way so that I can analyze that its WVF or TVF and stuff like that......... is there anyway, that I can do it ?

[Far]

Originally Posted by Far

What if, we use the slip wall instead of translational periodic boundary condition?




Full project which i have done uptill now including the research material:
https://dl.dropbox.com/u/68746918/Co...nstability.rar

If only meshes are needed then click on this link :
https://dl.dropbox.com/u/68746918/me...ute_taylor.rar

PS: Dropbox will take some time to upload the files. May be few hours.

Were these mesh files useful?

[rshbhb]

Originally Posted by Far

Were these mesh files useful?

Yes Sir the mesh file were useful to me, as it provided me an idea of how many nodes to create in the different sections.

I din't simulate the flow in our mesh file as I wasn't able to convert the top and bottom faces into periodic boundaries in FLUENT solver 6.3.26 .

THank you !!

Referring to my last post's image, is it possible to get the black colored vectors in the vel. contours in tecplot ?

ANd how can I deduce that at a particular flow rate the flow is WVF or TVF ?

[Far]

Originally Posted by rshbhb

Yes Sir the mesh file were useful to me, as it provided me an idea of how many nodes to create in the different sections.

I din't simulate the flow in our mesh file as I wasn't able to convert the top and bottom faces into periodic boundaries in FLUENT solver 6.3.26 .

THank you !!

Referring to my last post's image, is it possible to get the black colored vectors in the vel. contours in tecplot ?

ANd how can I deduce that at a particular flow rate the flow is WVF or TVF ?

This can be easily done in Fluent that how to convert pair of walls into periodic. I'll show you shortly.

Yes black vectors and velocity contours can be displayed simultaneously in Techplot.

What is WVF or TVF?

[rshbhb]

Originally Posted by Far

This can be easily as to convert the wall into periodic. I'll show you shortly.

Yes blacks vectors and velocity contours simultaneously in Techplot.

What is WVF or TVF?

WVF - Wavy Vortex Flow

TVF- Taylor Vortex FLow

WVF comes after TVF at higher reynolds number.

Please let me know the procedure for plotting it in TECPLOT too !!

[Far]

I have specially installed fluent 6.3.26 to illustrate how to make the translational periodicity in Fluent (or rotational periodicity as you prefer). Keep in mind ICEM does not allow me to add both.

Youtube link

http://www.youtube.com/watch?v=URpeH...ature=youtu.be

[Far]

Originally Posted by rshbhb

ANd how can I deduce that at a particular flow rate the flow is WVF or TVF ?

@Daniele: Any thoughts?

[ghost82]

Originally Posted by Far

@Daniele: Any thoughts?

Sorry for delay, I was out for a couple of days;
I think this can be evaluated by look at the pathlines; look at the attached picture I found on google to identify different flows.



Daniele

[ghost82]

Originally Posted by rshbhb

Dear Sir,

You had once mentioned that TECPLOT could be used to get the attached picture?
1.could you explain me how to do it in TECPLOT (as I am not getting both contours and velocity vector in one picture.)

I have simulated the results for different ang. vel. & geometries but only for 10,30 and 45 deg meshs.

1.But for nicer interpretation I want to know the particle pathline for the complete 360 degs or any other way so that I can analyze that its WVF or TVF and stuff like that......... is there anyway, that I can do it ?

Hi, this image was made in cfd-post; you can obtain the same picture in fluent with the function overlays (see some posts above).
You can use also tecplot, with the "slice" feature; on the slice window option choose to plot vectors.
However this is simpler with fluent itself or cfd-post.

Daniele

[behzad.ramtin]

finally any one could model this?
pls email me

behzadfakour@gmail.com

[Far]

someone indicated that link for dropbox files is not working : Post # 25. Here is new link:

https://dl.dropboxusercontent.com/u/...ute_taylor.rar

[R4RAHUL]

if you want to know your flow near the surface wall of your domain then you can use " k-episilon" and if you want to know far away from the surface wall then use "k-omega

[rbgamblin]

I have a question, sorry if it is stupid.

How did you increase the number of divisions in the radial direction for the mesh?

I have a school project now where we are trying to model this flow, but we are having extreme problems creating a regular mesh which has enough divisions in the radial direction (from the inner wall to the outer wall).

Any help you could provide would be very appreciated.

Again, sorry if this is a stupid question.