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Forum: OpenFOAM Running, Solving & CFD August 23, 2023, 02:21
Replies: 13
Views: 504
Posted By Desimuser1
Question doubt

i had given escape BC to both air and dust outlet,
in the image, it tells 1 particle has escaped, but in dust and air outlet, it tells 0 particles has escaped, so where did it escape to ?
...
Forum: OpenFOAM Running, Solving & CFD August 23, 2023, 01:43
Replies: 13
Views: 504
Posted By Desimuser1
reply

FOR ADJUSTABLE TIMESTEP

i had changed control dict to adapt to adjustable time step (macCo 1), but as soon as the particles start hitting dust outlet or air outlet, courant number shoots up very...
Forum: OpenFOAM Running, Solving & CFD August 21, 2023, 05:28
Replies: 13
Views: 504
Posted By Desimuser1
reply

i started to use original geometry, dia 16mm , velocity of 20m/s, 101325pa at both air and dust outlet, case condition is 18g of sand in 1m3 of air, (i have scaled it to my volume flow rate), and...
Forum: OpenFOAM Running, Solving & CFD August 15, 2023, 23:21
Replies: 13
Views: 504
Posted By Desimuser1
reply

thanks for reply utkan

i will try it out

after trying: i got scaled up geometry working, my boundary condition was wrong for velocity (i had given zero gradient at outlet), i have changed it to...
Forum: OpenFOAM Running, Solving & CFD August 14, 2023, 07:31
Replies: 13
Views: 504
Posted By Desimuser1
reply

but the simulation stops after 1 or 2 particle enters the system, and courant number shoots up from max 1.5 (lets say), to something like 8.54e+14, or 9.647e+41, like that,,

i dont know why, but...
Forum: OpenFOAM Running, Solving & CFD August 13, 2023, 23:55
Replies: 13
Views: 504
Posted By Desimuser1
log file

https://drive.google.com/file/d/1sCDzFky2LmoFbWwe71NgRwvqNTeFOvvp/view?usp=sharing

hope it downloads

thanks in advance
Forum: OpenFOAM Running, Solving & CFD August 11, 2023, 11:42
Replies: 13
Views: 504
Posted By Desimuser1
reply

buddy, i can share log file on Monday (2 days later), thanks for immediate reply, currently i am not able to give you rep power
Forum: OpenFOAM Running, Solving & CFD August 11, 2023, 10:44
Replies: 13
Views: 504
Posted By Desimuser1
reply

i have changed time step decreased it,
i was simulating a swirl tube with 20m/s at inlet, 101325 pa at both dust and air outlet, worst condition was 18g of sand in 1m3 of air , i scaled down...
Forum: OpenFOAM Running, Solving & CFD August 11, 2023, 03:51
Replies: 13
Views: 504
Posted By Desimuser1
Question MPPIC cyclone tutroial scaled down

i am new to openfoam v2212, i was running cyclone tutorial, it ran without any problems,
i want to reduce the size by 1000 times, when i reduced the mesh to 1000 times, and decreased the particles...
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