Find answers, ask questions, and connect with our <br>community around the world.

Home Forums OpenFOAM Forum internal flow

• # internal flow

Posted by on March 24, 2023 at 7:26 pm

i am tiring to run the internal flow through the pipe.

but i hot following error

Time = 0.01

Courant Number mean: 0.400725 max: 3.26231
smoothSolver: Solving for Ux, Initial residual = 0.592354, Final residual = 2.59361e-06, No Iterations 7
smoothSolver: Solving for Uy, Initial residual = 0.273918, Final residual = 8.4255e-06, No Iterations 6
smoothSolver: Solving for Uz, Initial residual = 0.233948, Final residual = 2.35857e-06, No Iterations 6
GAMG: Solving for p, Initial residual = 0.0635594, Final residual = 0.00343581, No Iterations 4
GAMG: Solving for p, Initial residual = 0.394894, Final residual = 0.0260377, No Iterations 1
GAMG: Solving for p, Initial residual = 0.0715864, Final residual = 0.00448381, No Iterations 2
time step continuity errors : sum local = 0.00100752, global = 0.000113416, cumulative = 0.000127582
GAMG: Solving for p, Initial residual = 0.0808264, Final residual = 0.00381488, No Iterations 3
GAMG: Solving for p, Initial residual = 0.366797, Final residual = 0.0244137, No Iterations 1
GAMG: Solving for p, Initial residual = 0.0652585, Final residual = 0.00402782, No Iterations 2
time step continuity errors : sum local = 0.000300413, global = 2.67547e-05, cumulative = 0.000154337
GAMG: Solving for p, Initial residual = 0.0982857, Final residual = 0.0084796, No Iterations 1
GAMG: Solving for p, Initial residual = 0.0247109, Final residual = 0.00176978, No Iterations 2
GAMG: Solving for p, Initial residual = 0.0159649, Final residual = 4.68258e-07, No Iterations 17
time step continuity errors : sum local = 2.7888e-08, global = -2.12966e-09, cumulative = 0.000154335

2 Members · 3 Replies
• 3 Replies
• ### Srinivas K

Member
March 24, 2023 at 7:27 pm

checkMesh command gives following error

Checking geometry…
Overall domain bounding box (-1.6285 -1.10823 -0.2) (2.04446 0.446533 0.777817)
Mesh has 3 geometric (non-empty/wedge) directions (1 1 1)
Mesh has 3 solution (non-empty) directions (1 1 1)
Boundary openness (-7.22337e-17 -2.29922e-17 -9.36961e-16) OK.
Max cell openness = 5.09292e-16 OK.
Max aspect ratio = 7.2642 OK.
Minimum face area = 5.09444e-05. Maximum face area = 0.00374913. Face area magnitudes OK.
Min volume = 4.51671e-07. Max volume = 7.07088e-05. Total volume = 0.519563. Cell volumes OK.
Mesh non-orthogonality Max: 64.2451 average: 14.5845
Non-orthogonality check OK.
Face pyramids OK.
Max skewness = 2.62478 OK.
Coupled point location match (average 0) OK.

Mesh OK.

End

• ### Srinivas K

Member
March 24, 2023 at 7:28 pm

but If solve this same mesh with

simpleFoam it run successfully.

pisoFoam fives above error

• ### BarÄ±ÅŸ Bicer

Moderator
March 25, 2023 at 2:25 pm

what is error I didnt understand exactly?

The mesh looks ok no problem.