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P Divergence for k-Epsilon Model (Simple Foam)

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Old   January 6, 2021, 21:05
Unhappy P Divergence for k-Epsilon Model (Simple Foam)
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Hello,

I am trying to simulate water flow inside an emitter (drip irrigation) using RANS and LES (Samagorin–Lilly), I have constructed an structured quad mesh in ANSA (https://imgur.com/a/4tp2tA5) it is a very coarse mesh of 25600 volume elements.

I am just trying to perform RANS as first step using k-Epsilon model. I reused the pitzDaily simpleFoam tutorial to try and run it using my mesh, I changed everything that was needed (PIDs match to those ones in the tutorial). But for some reason my simulation explodes and diverges, specially p.

I left the initial conditions as they are, this is a preliminary simulation, will change them later.

Here is the last iteration:

Time = 5

smoothSolver: Solving for Ux, Initial residual = 0.579153, Final residual = 0.0324501, No Iterations 2
smoothSolver: Solving for Uy, Initial residual = 0.530541, Final residual = 0.0388022, No Iterations 2
GAMG: Solving for p, Initial residual = 1, Final residual = 0.0258436, No Iterations 2
time step continuity errors : sum local = 9.49971e+40, global = -4.51565e+40, cumulative = -4.51565e+40
smoothSolver: Solving for epsilon, Initial residual = 1, Final residual = 0.0233028, No Iterations 2
bounding epsilon, min: -9.60072e+58 max: 2.86832e+60 average: 1.98086e+57
smoothSolver: Solving for k, Initial residual = 1, Final residual = 0.0699013, No Iterations 1
bounding k, min: -5.66487e+50 max: 1.4514e+52 average: 3.68843e+48
ExecutionTime = 0.47 s ClockTime = 0 s

Time = 6

smoothSolver: Solving for Ux, Initial residual = 1, Final residual = 0.086456, No Iterations 8
smoothSolver: Solving for Uy, Initial residual = 1, Final residual = 0.0864664, No Iterations 8
*Code Stops*

What could be the possible causes of my divergence?
I have a suspicion it could be my mesh but not 100% sure, I tried another mesh that was for another school assignment in the same file and it did converge! I am very confused at the moment

Any comment would be helpful, thanks!
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