Search Results

Showing results 1 to 9 of 9
Search took 0.00 seconds. Search: Posts Made By: RodriguezFatz

Forum: OpenFOAM Running, Solving & CFD

March 5, 2015, 04:15

Replies: 19

Solving Flow past Square Cylinder

Views: 1,798

Posted By RodriguezFatz

In ICEM getting a mesh such as shown above is...

In ICEM getting a mesh such as shown above is pretty easy. Maybe 5 minutes if you know what to do. Where exactly are you stuck?

Forum: OpenFOAM Running, Solving & CFD

October 8, 2013, 05:25

Replies: 19

Solving Flow past Square Cylinder

Views: 1,798

Posted By RodriguezFatz

If you post code / files: Click on the "Go...

If you post code / files:
Click on the "Go advanced" button. In the advanced posting form click on the "#". Here we go. Post the code between the "CODE" tags. No files needed.

Forum: OpenFOAM Running, Solving & CFD

October 8, 2013, 05:17

Replies: 19

Solving Flow past Square Cylinder

Views: 1,798

Posted By RodriguezFatz

The size of the bluff body is 0.05? Then, your...

The size of the bluff body is 0.05? Then, your Reynolds Number is 5, not 100. Is there a vortex street for Re=5?

It's Re = U*L/nu.
not Re = U/nu.

Forum: OpenFOAM Running, Solving & CFD

October 8, 2013, 04:36

Replies: 19

Solving Flow past Square Cylinder

Views: 1,798

Posted By RodriguezFatz

Some possibilities: 1) Sometimes I had to wait...

Some possibilities:
1) Sometimes I had to wait a long time until the vortex street developed. 30s / 4s are not even 10 periods. Maybe it was not enough.
2) Switch the time scheme from "Euler" to...

Forum: OpenFOAM Running, Solving & CFD

October 7, 2013, 15:20

Replies: 19

Solving Flow past Square Cylinder

Views: 1,798

Posted By RodriguezFatz

Also, you write "dt=0.005" in your initial post,...

Also, you write "dt=0.005" in your initial post, but your input file (controlDict) says 0.05!

Forum: OpenFOAM Running, Solving & CFD

October 7, 2013, 08:05

Replies: 19

Solving Flow past Square Cylinder

Views: 1,798

Posted By RodriguezFatz

Wait. I was talking about the time-step "dt"....

Wait. I was talking about the time-step "dt". Lower the time-step to 0.01. Then, the Courant number becomes smaller - not higher. This is good!
Also, for a stable time-differencing (backward) you...

Forum: OpenFOAM Running, Solving & CFD

October 7, 2013, 07:53

Replies: 19

Solving Flow past Square Cylinder

Views: 1,798

Posted By RodriguezFatz

Ok, so I am not used to this meshDict, since I...

Ok, so I am not used to this meshDict, since I use ICEM for the grid.
1) Is this a 2d case or 3d?
2) What frequency for the vorticies do you expect? I made a quick calculation and got f=4Hz, so...

Forum: OpenFOAM Running, Solving & CFD

October 7, 2013, 07:45

Replies: 19

Solving Flow past Square Cylinder

Views: 1,798

Posted By RodriguezFatz

Isn't this 2d? Please post your "fvSchemes"....

Isn't this 2d?
Please post your "fvSchemes". And please use the "code" tags in the advanced texting to post code...

Forum: OpenFOAM Running, Solving & CFD

October 7, 2013, 07:22

Replies: 19

Solving Flow past Square Cylinder

Views: 1,798

Posted By RodriguezFatz

Hey, 1) Can you post your numerical...

Hey,

1) Can you post your numerical settings? You can use the "code" tags (go for advanced posting") and copy the code into this textbox. This is much better to read than the pictures.
2) You...

Showing results 1 to 9 of 9

Forum Jump

All times are GMT -4. The time now is 01:22.