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<div dir="auto">Hi Mateusz,
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<div dir="auto">I will venture my view of this and others can chime in if they have a different opinion. Also, I’m assuming by adaptive timestep you mean sub-cycling in time where different refinement levels take different time steps? </div>
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<div dir="auto">For FLASH5, we are transitioning to the AMReX package. AMReX is built on the idea of time sub-cycling so in principle, we could utilize that. For that matter, PARAMESH was also built to allow time sub-cycling, we just never used it. As of now,
for the solvers we are porting to FLASH5/AMReX we are still making the assumption of a single global time step. This simplifies things considerably. But I am of the opinion that, eventually, we should implement time sub-cycling and take advantage of what AMReX
offers in that regard. This, however, will not likely be a feature available from the outset. </div>
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<div dir="auto">Now, what might speed things along is capable developers willing to lend a hand in the implementation ;) </div>
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<div dir="auto">Sean</div>
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<div>Sean M. Couch, Ph.D.</div>
<div>Assistant Professor</div>
<div>Department of Physics and Astronomy</div>
<div>Department of Computational Mathematics, Science, and Engineering</div>
<div>Facility for Rare Isotope Beams</div>
<div>Michigan State University</div>
<div>567 Wilson Rd, 3260 BPS</div>
<div>East Lansing, MI 48824</div>
<div>(517) 884-5035 --- couch@pa.msu.edu --- www.pa.msu.edu/~couch</div>
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<div name="messageReplySection">On Sep 30, 2019, 7:55 PM -0400, Mateusz Ruszkowski <mateuszr@umich.edu>, wrote:<br>
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Hi all,<br>
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Does anyone know if there a plan to extend FLASH to include adaptive timestep or if users would be interested in such a code feature?<br>
Myself and a number of my collaborators would definitely be interested in using such a code capability.<br>
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Cheers,<br>
Mateusz<br>
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