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Atomisation of liquid jet through nozzle simulated with Gerris

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Old   June 30, 2017, 06:25
Default Atomisation of liquid jet through nozzle simulated with Gerris
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Xing Fei
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Hello everyone,
I am a student and I am a beginner of Gerris. Now I am trying to simulate the atomisation of liquid jet through a nozzle.
I was trying to follow the example:
http://gerris.dalembert.upmc.fr/gerr...on.html#htoc16
and have generated my own simulation file and 3D nozzle geometry, but it did not work. I have checked my nozzle model with: gtscheck -v < nozzle.gts , and it looks fine.
There are always warnings while running the simulation:
Gfs-CRITICAL **: PE 2 (PC): ftt_cell_travers: assertion ‘root!=NULL’failed
Gfs-CRITICAL **: PE 7 (PC): ftt_cell_pos: assertion ‘cell!=NULL’failed
The process always fails at 15 or 18 step and shows error information like:
(process :16030): Gfs-ERROR **: file vof.c: line 1616 (f_over_Dv): assertion failed: (GFS_VALUE (cell, p->vpar.v) > 0.)
If I delete the nozzle model from the simulation, then everything goes fine just like the example. I don’t quite understand where goes wrong after importing the model into simulation, and how can I revise it.
I have enclosed my simulation file. I will be really grateful if anyone can look at it and give me some advise.
Thanks for your time.
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File Type: docx nozzle.docx (13.4 KB, 5 views)
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atomization, geometry import, gerris, nozzle

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