Specify an endTime that isn't a multiple of timestep

hertzsprung · August 3, 2017, 06:22

I need to obtain a solution at a particular simulated time, but I also need to use a timestep that does not divide exactly into endTime. For example, endTime=10s, timestep=3s. I'd like to have solves at t=3s, t=6s, t=9s then, using a timestep=1s, obtain the final solution at t=10s.

Can I configure this in the controlDict and obtain a solution in a single run?

Joshua14 · August 3, 2017, 11:24

You should be fine with an endTime of 10s and a writeTime of 3s as it should automatically write at endTime regardless of writeTime.

I suggest making a small test case that runs in a matter of seconds to test this with your version of OF.

Joshua

hertzsprung · August 4, 2017, 05:18

Quote:

Originally Posted by Joshua14

You should be fine with an endTime of 10s and a writeTime of 3s as it should automatically write at endTime regardless of writeTime.

I suggest making a small test case that runs in a matter of seconds to test this with your version of OF.

I've tried with a small scalarTransportFoam case, https://github.com/hertzsprung/openfoamEndTime. It outputs 3,6 and 9 directories only.

August 3, 2017, 06:22	Specify an endTime that isn't a multiple of timestep	#1
hertzsprung New Member James Shaw Join Date: May 2014 Posts: 8 Rep Power: 12	I need to obtain a solution at a particular simulated time, but I also need to use a timestep that does not divide exactly into endTime. For example, endTime=10s, timestep=3s. I'd like to have solves at t=3s, t=6s, t=9s then, using a timestep=1s, obtain the final solution at t=10s. Can I configure this in the controlDict and obtain a solution in a single run?

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August 3, 2017, 11:24		#2
Joshua14 Member Joshua Join Date: Dec 2016 Location: St. Louis, Missouri Posts: 91 Rep Power: 9	You should be fine with an endTime of 10s and a writeTime of 3s as it should automatically write at endTime regardless of writeTime. I suggest making a small test case that runs in a matter of seconds to test this with your version of OF. Joshua