Run Calculation

krisipanikou · May 15, 2012, 13:28

Hello genius!!
First of all sorry for my mistakes... English is not my native language !!!

So, I have to simulate a can pasteurization and watch the thermal increase at the slow heat zone (shz)...My question is : what should I do in order to take the correct results (about the time of shz simulation) at Run Calculation option ?
How i choose the time step size (s) and the number of time steps ? I have read many tutorials but still I have doubts...My problem is transient 3-D, double precision, pressure – based, laminar flow, natural convection... Theoretically I need 2400s for the slow heat zone to get my desirable temperature.

Thanks a lot !!!

ravi_cfd · May 17, 2012, 02:39

hi ,
you can start your simulation with a time step of 0.1 sec initially. then slowly increase to 0.2 and 0.5 sec ... once it is converging .

your total time i.e 2400 sec. initially u can give 5000 time steps.

krisipanikou · May 17, 2012, 12:53

thanks ravi_cfd ... I'll try it !!!

May 15, 2012, 13:28	Run Calculation	#1
krisipanikou New Member kris pani Join Date: Mar 2012 Location: Greece Posts: 14 Rep Power: 14	Hello genius!! First of all sorry for my mistakes... English is not my native language !!! So, I have to simulate a can pasteurization and watch the thermal increase at the slow heat zone (shz)...My question is : what should I do in order to take the correct results (about the time of shz simulation) at Run Calculation option ? How i choose the time step size (s) and the number of time steps ? I have read many tutorials but still I have doubts...My problem is transient 3-D, double precision, pressure – based, laminar flow, natural convection... Theoretically I need 2400s for the slow heat zone to get my desirable temperature. Thanks a lot !!!

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May 17, 2012, 02:39	hi	#2
ravi_cfd New Member kumar ravi Join Date: May 2012 Posts: 4 Rep Power: 14	hi , you can start your simulation with a time step of 0.1 sec initially. then slowly increase to 0.2 and 0.5 sec ... once it is converging . your total time i.e 2400 sec. initially u can give 5000 time steps.

May 17, 2012, 12:53		#3
krisipanikou New Member kris pani Join Date: Mar 2012 Location: Greece Posts: 14 Rep Power: 14	thanks ravi_cfd ... I'll try it !!!