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February 18, 2011, 09:47 |
interDyMFoam and acceleration
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#1 |
New Member
nikita tryaskin
Join Date: Oct 2009
Location: Helsinki/St. Petersburg
Posts: 27
Rep Power: 17 |
good day
im trying to simulate impact of the TANK i have some curve with the speed for example 5m/s and 0m/s after 1 second i've tried to use SKA and use .dat file for the coordinates something like that (0 ((0 0 0) (0 0 0))) (1 ((5 0 0) (0 0 0))) (2 ((10 0 0) (0 0 0))) (3 ((15 0 0) (0 0 0))) (4 ((20 0 0) (0 0 0))) (5 ((25 0 0) (0 0 0))) (5.1 ((29.5 0 0) (0 0 0))) (5.2 (5.3 ... (5.9 ((47.5 0 0) (0 0 0))) (6 ((47.5 0 0) (0 0 0))) (15 ((47.5 0 0) (0 0 0))) something like that.. so i got the results and the picture for alpha(liquid) looks pretty nice(physically) but the PRESSURE!! before 5 secs i have normal pressure according to rhoGh after... i have some insane values can u suggest something maybe i should do something different to simulate this and one more question... it seems that i have to place coordinates to the .dat file but, maybe there is a way i can apply velocity changing to the TANK maybe i have to change/add something in momentum equation if so, can you follow me how to do that.. i've tried to look through Ueqn.C but still a little bit confused on how the things work. here are two slides for pressure on the far bottom of the tank i've tried coarse mesh and fine mesh(900.000) cells.. i've tried laminar and kEpsilon but the result is the same.. as well i decreased deltaT and maxDeltaT (around 0.0001 - 0.00001) |
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