[FLASH-USERS] Sedov running time problem

[Yên Bình]

Dear Adam Reyes,

I can change the explosion energy to 10^51 erg but when I try to minimize
the initial radius to below 10^14, the simulation cracks and sometimes
produces weird results like in the photo.

It does not seem to be related to other runtime parameters, it thinks it is
because of the grid ? I try to set nxb and nyb to higher value like 200 but
it output this error:

*Abort(1) on node 0 (rank 0 in comm 0): application called
MPI_Abort(MPI_COMM_WORLD, 1) - process 0 *

How can I set the initial radius to 10^4 like a star core before an
explosion?

Thank you for your kind support,

Binh

[image: image.png]



Nguyen Thi Yen Binh


Summer Student, Academia Sinica Institute of Astronomy and Astrophysics

Space Science and Satellite Technology, University of Science and
Technology of Ha Noi

binhnty.bi12-060 at st.usth.edu.vn

+84367533986

Tuy Hoa, Phu Yen, Viet Nam

<https://www.facebook.com/wbinhw>

<https://www.instagram.com/yenbinne/>

<https://github.com/pea9>








Vào Th 4, 19 thg 7, 2023 vào lúc 16:43 Adam Reyes <
adam.reyes at rochester.edu> đã viết:

> Hi Binh,
>
> You probably want to play with the runtime parameters "sim_rInit" and
> "sim_expEnergy"  in your flash.par. These control the energy of the
> explosion and the initial radius in which it is deposited for the initial
> conditions. You'll want to scale these to your much larger domain.
>
> The FLASH setup of the problem including the many runtime parameters as
> well as the dimensionless analytic solution are described here
> <https://flash.rochester.edu/site/flashcode/user_support/flash4_ug_4p7/node187.html#SECTION010114000000000000000> in
> the user guide.
>
> *************************************************************************
> Adam Reyes
>
> Code Group Leader, Flash Center for Computational Science
> Research Scientist, Dept. of Physics and Astronomy
> University of Rochester
> River Campus: Bausch and Lomb Hall, 369
> 500 Wilson Blvd. PO Box 270171, Rochester, NY 14627
> Email adam.reyes at rochester.edu
> Web https://flash.rochester.edu
>  (he / him / his)
>
> *************************************************************************
>
> On Wed, Jul 19, 2023 at 7:44 AM Yên Bình <yenbinhpy308 at gmail.com> wrote:
>
>> Dear FLASH Users,
>>
>> I have a problem with setting up the code for Sedov. I try to set up the
>> simulation box to 10^16 x 10^16:
>>
>> *sim_xctr = 5.0e15*
>> *sim_yctr = 5.0e15*
>>
>>
>>
>> *xmin = 0.xmax = 1.0e16ymin = 0.ymax = 1.0e16*
>>
>> But when I try to run the simulation, the plot file does not have any
>> sign of an explosion (just a blank). I think it's because the box is too
>> big so I need to set the right value of the running time:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> *# checkpoint file output parameterscheckpointFileIntervalTime =
>> 0.01checkpointFileIntervalStep = 0checkpointFileNumber = 0# plotfile output
>> parametersplotfileIntervalTime = 1plotfileIntervalStep = 0plotfileNumber =
>> 0nend            = 10000tmax            = 1.0e8*
>>
>> But even if I set the time very high (10^8), nothing happens.
>>
>> I really appreciate any help to solve this problem. Thank you in advance.
>>
>> Binh.
>>
>>
>> [image: image.png]
>>
>>
>> Nguyen Thi Yen Binh
>>
>> College Student
>>
>> Space Science and Satellite Technology
>>
>> University of Science and Technology of Ha Noi
>>
>> binhnty.bi12-060 at st.usth.edu.vn
>>
>> +84367533986
>>
>> Tuy Hoa, Phu Yen, Viet Nam
>>
>> <https://www.facebook.com/wbinhw>
>>
>> <https://www.instagram.com/yenbinne/>
>>
>> <https://github.com/pea9>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> flash-users mailing list
>> flash-users at flash.rochester.edu
>>
>> For list info, including unsubscribe:
>> https://flash.rochester.edu/mailman/listinfo/flash-users
>>
>
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