Re: TimeBegin and TimeMax Question

From: Jared Coughlin <Jared.W.Coughlin.29_at_nd.edu>
Date: Wed, 1 Feb 2017 18:52:59 -0500

Hello! Thank you for your response! Just so I'm clear, in the user manual
it says that for the default system of units (which I'm using), the unit of
time is 9.8 x 10^8 yr/h. So, if I want a simulation that runs for 500 Myr,
I set TimeBegin = 0.0 and TimeMax = 0.357. So, since 0.357 * 9.8 x 10^8
yr/h = 499800000 yr (with h = 0.7), this should work, correct? Thank you!
-Jared

On Sat, Jan 28, 2017 at 9:55 AM, Volker Springel <volker_at_mpa-garching.mpg.de
> wrote:

>
>
> > On 27 Jan 2017, at 18:10, Jared Coughlin <Jared.W.Coughlin.29_at_nd.edu>
> wrote:
> >
> > Hello! I just have a quick question about the parameters TimeBegin and
> TimeMax from the parameter file. In the user manual they are described as
> being the values of the scale factor for the start and end of the
> simulation if comoving integration is on. However, if comoving integration
> is off, it just says that they correspond to the time variable.
>
>
> Hi Jared,
>
> > If, say, I wanted to run a simulation with comoving integration off for
> 500 Myr, what should the values of TimeBegin and TimeMax be? Do they
> correspond to just arbitrary times in internal time units and their
> difference needs to be 500 Myr? Thanks!
>
> Yes, this is exactly right.
>
> Volker
>
>
>
> > -Jared
> >
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Received on 2017-02-02 00:53:04

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