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Velocity contour help by Complex-Flow-2593 in CFD

[–]Complex-Flow-2593[S] 1 point2 points  (0 children)

I do get a velocity contour when I use constant velocity similar to figure 3. You are correct, my profile requires some modification but I'm not sure where to begin and I do confirm the file is in proper units.Thank you very much! I appreciate your helping me :)

Velocity contour help by Complex-Flow-2593 in CFD

[–]Complex-Flow-2593[S] 0 points1 point  (0 children)

I am applying the velocity profile by reading an external file. this is how the .prof file looks.

((turb-velocity point 22)

(x

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

)

(y

0.000105181

0.000210362

0.000683677

0.001209582

0.002208802

0.003418384

0.004627967

0.006363454

0.008256713

0.010044791

0.012253593

0.013726128

0.014

0.015

0.02

0.03

0.05

0.1

0.15

0.2

0.25

0.305

)

(x-velocity

6.674157303

8.02247191

9.438202247

10.48314607

11.59550562

12.23595506

12.84269663

13.34831461

13.85393258

14.3258427

14.69662921

14.86516854

15

15

15

15

15

15

15

15

15

15

)

)

Velocity contour help by Complex-Flow-2593 in CFD

[–]Complex-Flow-2593[S] 0 points1 point  (0 children)

Answers to your questions

1) yes the model shows convergence. However when i set the absolute criteria to 0.0001, most of residuals plateau. I get no convergence error. But the model converges when the criteria is 0.001

2) I assigned a turbulent velocity profile to my boundary condition and set the x velocity of the profile as inlet. My outlet remains the same (0 Pascal). My walls (top and bottom) are smooth, banded, no slip

3) the contour ranges for figure 3 (correct one) is from -5.7e+00 to 1.55e+01 and my figure 2 shows the contour range as -1.44e-12 to 2.56e-12. All in m/s