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Simulation CFD

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Active Member
mfqdias
Posts: 6
Registered: ‎02-05-2013
Accepted Solution

Dynamic simulation during time

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02-07-2013 02:31 AM

Hi,

 

I didn't undersant quite well the simulation/animation part.

I've tried some examples and perform the simulation defining iterations an so on, but how can i perform a simulation of a flow during 5 min.

Let's say for example: i have a water flow with 80ºC of temperature that enters in a filled tank (with an outlet pipe also...) that has water at 10ºC. The water temperatures in the tank are different at the time 0min form the time of 2min and different of the time 5 min.

Is there any way that i can perform this kind of simulation with time and some kind of animation?

 

Thanks

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Product Support
wildej
Posts: 726
Registered: ‎08-25-2011

Re: Dynamic simulation during time

02-07-2013 05:08 AM in reply to: mfqdias

Hi,

 

You would need to run a transient study.

 

Set an initial condition to the water (temp) and then solve with timesteps of maybe 0.5s - use an inner timestep of 3 to start with, the convergence graph should look smooth.

 

Alternatively (and faster)

 

If the flow field stays constant for the entire time, you could converge the flow as a steady state model, re-initialise the initial temp conditon and then run a transient study with flow off (it will use the previous results) and just heat transfer on. This will be far faster.

 

Be sure not to save out too many save intervals as you go. Although this is how we will create an animation, you should avoid creating a file that is too large. Typically we save out 30-50 results per run.

 

Hope that helps.

Jon



Jon Wilde
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Active Member
mfqdias
Posts: 6
Registered: ‎02-05-2013

Re: Dynamic simulation during time

02-07-2013 06:48 AM in reply to: wildej

Ok. Thanks.

 

I will try it later and see how it goes and after i'll post here my feedback,

 

Thanks

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