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Re: Espressomd-users Digest, Vol 117, Issue 5


From: Ahmad Reza Motezakker
Subject: Re: Espressomd-users Digest, Vol 117, Issue 5
Date: Wed, 18 Nov 2020 06:11:41 +0000

​​Dear Chandra,


In the last summer, I tried to make a rod shape particle with raspberry model. I did it with the help of raspberry tutorial and some of the published paper as follows:


https://arxiv.org/pdf/1503.02671
https://arxiv.org/pdf/1503.02681
https://arxiv.org/pdf/1602.07560

I think this combination will give you the essential clues for making raspberry particles. The main idea is to understand step by step of the spherical raspberry particle and try to imply those rules for your shape. 

Best Regards,
Ahmad Reza



From: Espressomd-users <espressomd-users-bounces+armot=kth.se@nongnu.org> on behalf of chandra shekhar maurya <chandra15294@gmail.com>
Sent: Wednesday, November 18, 2020 6:58 AM
To: espressomd-users@nongnu.org
Subject: Re: Espressomd-users Digest, Vol 117, Issue 5
 
Dear users,
 I am trying to create a flake shaped model of FE particles, but i have no idea how to proceed. So can anyone guide me, how can I create a flake shape of FE (Iron) particles using a raspberry model?
Your help will be highly appreciated.



Thanks & Regards
Chandra Shekhar Maurya
Mechanical Eng. Dept.
Indian Institute of Technology Patna
Contact No:9793572837



On Mon, Oct 19, 2020 at 9:39 PM <espressomd-users-request@nongnu.org> wrote:
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Today's Topics:

   1. Re: Espressomd-users Digest, Vol 117, Issue 3 (Kai Szuttor)


----------------------------------------------------------------------

Message: 1
Date: Mon, 19 Oct 2020 08:51:33 +0200
From: Kai Szuttor <kai@icp.uni-stuttgart.de>
To: chandra shekhar maurya <chandra15294@gmail.com>
Cc: espressomd-users@nongnu.org
Subject: Re: Espressomd-users Digest, Vol 117, Issue 3
Message-ID: <20201019065133.GB17973@bongo.icp.uni-stuttgart.de>
Content-Type: text/plain; charset="iso-8859-1"

Please note that the visualization tool always only shows spherical particles.

Best,

Kai

On Mon, Oct 19, 2020 at 11:17:18AM +0530, chandra shekhar maurya wrote:
>    Dear users,
>    I used Gay-Berene interaction for ellipsoidal particles, but i am still
>    getting  spherical particles. As you can see in attached figures.
>    Thanks & Regards
>    Chandra Shekhar Maurya
>    Mechanical Eng. Dept.
>    Indian Institute of Technology Patna
>    Contact No:9793572837
>    On Sat, Oct 17, 2020 at 9:32 PM <espressomd-users-request@nongnu.org>
>    wrote:
>
>      Send Espressomd-users mailing list submissions to
>              espressomd-users@nongnu.org
>
>      To subscribe or unsubscribe via the World Wide Web, visit
>              https://lists.nongnu.org/mailman/listinfo/espressomd-users
>      or, via email, send a message with subject or body 'help' to
>              espressomd-users-request@nongnu.org
>
>      You can reach the person managing the list at
>              espressomd-users-owner@nongnu.org
>
>      When replying, please edit your Subject line so it is more specific
>      than "Re: Contents of Espressomd-users digest..."
>
>      Today's Topics:
>
>         1. Re: Espressomd-users Digest, Vol 117, Issue 1
>            (chandra shekhar maurya)
>         2. Re: Espressomd-users Digest, Vol 117, Issue 1
>            (=?UTF-8?Q?Jean-No=C3=ABl_Grad?=)
>
>      ----------------------------------------------------------------------
>
>      Message: 1
>      Date: Sat, 17 Oct 2020 10:44:11 +0530
>      From: chandra shekhar maurya <chandra15294@gmail.com>
>      To: espressomd-users@nongnu.org
>      Subject: Re: Espressomd-users Digest, Vol 117, Issue 1
>      Message-ID:
>             
>      <CALf1gEy6wDdV8Jj8tMVwM9hzcqSo7bPY8ACd_su7hrG6A8PaNw@mail.gmail.com>
>      Content-Type: text/plain; charset="utf-8"
>
>      Dear users,
>      During using Gay-Berne interactio, i am geting bellow error. Please
>      suggetme , how can i correct i?
>
>      Box size 88.6226925452758
>      Traceback (most recent call last):
>        File "test.py", line 51, in <module>
>
>      system.non_bonded_inter[0,0].gay_berne.set_params(eps=lj_eps,sig=lj_sig,cutoff=lj_cut,
>      k1=k)
>      AttributeError: 'NoneType' object has no attribute 'set_params'
>
>      *Thanks & Regards*
>      Chandra Shekhar Maurya
>      Mechanical Eng. Dept.
>      Indian Institute of Technology Patna
>      Contact No:9793572837
>
>      On Tue, Oct 13, 2020 at 9:33 PM <espressomd-users-request@nongnu.org>
>      wrote:
>
>      > Send Espressomd-users mailing list submissions to
>      >         espressomd-users@nongnu.org
>      >
>      > To subscribe or unsubscribe via the World Wide Web, visit
>      >       
>       https://lists.nongnu.org/mailman/listinfo/espressomd-users
>      > or, via email, send a message with subject or body 'help' to
>      >         espressomd-users-request@nongnu.org
>      >
>      > You can reach the person managing the list at
>      >         espressomd-users-owner@nongnu.org
>      >
>      > When replying, please edit your Subject line so it is more specific
>      > than "Re: Contents of Espressomd-users digest..."
>      >
>      >
>      > Today's Topics:
>      >
>      >    1. Regarding dealing with non-spherical particles in Ferrofluid
>      >       - Part I (chandra shekhar maurya)
>      >    2. Re: Regarding dealing with non-spherical particles in
>      >       Ferrofluid - Part I (Rudolf Weeber)
>      >
>      >
>      > ----------------------------------------------------------------------
>      >
>      > Message: 1
>      > Date: Tue, 13 Oct 2020 19:30:12 +0530
>      > From: chandra shekhar maurya <chandra15294@gmail.com>
>      > To: espressomd-users-request@nongnu.org,
>      >         espressomd-users-owner@nongnu.org, 
>      espressomd-users@nongnu.org
>      > Subject: Regarding dealing with non-spherical particles in Ferrofluid
>      >         - Part I
>      > Message-ID:
>      >         <
>      > CALf1gEwsVKt4AtCbqeDe0V2iN710x8aKZ_1+a8Gufw3wha8GvQ@mail.gmail.com>
>      > Content-Type: text/plain; charset="utf-8"
>      >
>      > Dear users,
>      >  I am trying to do simulation for "Ferrofluid - Part I", using
>      > non-spherical particles.
>      > So how can I deal with non-spherical particles like ellipsoid, flake
>      shape.
>      > Your help will be highly obliged.
>      >
>      >
>      >
>      > *Thanks & Regards*
>      > Chandra Shekhar Maurya
>      > Mechanical Eng. Dept.
>      > Indian Institute of Technology Patna
>      > Contact No:9793572837
>      > -------------- next part --------------
>      > An HTML attachment was scrubbed...
>      > URL: <
>      >
>      https://lists.nongnu.org/archive/html/espressomd-users/attachments/20201013/d4cd6fa4/attachment.html
>      > >
>      >
>      > ------------------------------
>      >
>      > Message: 2
>      > Date: Tue, 13 Oct 2020 16:31:20 +0200
>      > From: Rudolf Weeber <weeber@icp.uni-stuttgart.de>
>      > To: chandra shekhar maurya <chandra15294@gmail.com>
>      > Cc: espressomd-users@nongnu.org
>      > Subject: Re: Regarding dealing with non-spherical particles in
>      >         Ferrofluid - Part I
>      > Message-ID: <20201013143120.GA1918947@icp.uni-stuttgart.de>
>      > Content-Type: text/plain; charset=us-ascii
>      >
>      > Hi Chandra,
>      > On Tue, Oct 13, 2020 at 07:30:12PM +0530, chandra shekhar maurya
>      wrote:
>      > >  I am trying to do simulation for "Ferrofluid - Part I", using
>      > > non-spherical particles.
>      > > So how can I deal with non-spherical particles like ellipsoid, flake
>      > shape.
>      > > Your help will be highly obliged.
>      > For ellipsoidal particles, you can use the Gay-Berne interaction,
>      which is
>      > available in Espresso.
>      > For other cases, you can make use of the raspberry model as an
>      > approximation (using Espresso's VirtualSitesRelative feature).
>      > See e.g., the works on magnetic cube-like particles by Kantorovich et
>      al.
>      >
>      > Regards, Rudolf
>      >
>      >
>      >
>      >
>      > ------------------------------
>      >
>      > Subject: Digest Footer
>      >
>      > _______________________________________________
>      > Espressomd-users mailing list
>      > Espressomd-users@nongnu.org
>      > https://lists.nongnu.org/mailman/listinfo/espressomd-users
>      >
>      >
>      > ------------------------------
>      >
>      > End of Espressomd-users Digest, Vol 117, Issue 1
>      > ************************************************
>      >
>      -------------- next part --------------
>      An HTML attachment was scrubbed...
>      URL:
>      <https://lists.nongnu.org/archive/html/espressomd-users/attachments/20201017/4280e549/attachment.html>
>
>      ------------------------------
>
>      Message: 2
>      Date: Sat, 17 Oct 2020 14:46:45 +0200
>      From: "=?UTF-8?Q?Jean-No=C3=ABl_Grad?=" <jgrad@icp.uni-stuttgart.de>
>      To: chandra shekhar maurya <chandra15294@gmail.com>
>      Cc: espressomd-users@nongnu.org, Espressomd-users
>             
>      <espressomd-users-bounces+jgrad=icp.uni-stuttgart.de@nongnu.org>
>      Subject: Re: Espressomd-users Digest, Vol 117, Issue 1
>      Message-ID: <b6490cc19d143c0a41a67a93b3f7b82f@icp.uni-stuttgart.de>
>      Content-Type: text/plain; charset=US-ASCII; format=flowed
>
>      Dear Chandra Shekhar Maurya,
>
>      Maybe the feature GAY_BERNE is missing from your myconfig.hpp file. If
>      you didn't provide a custom myconfig.hpp file when compiling ESPResSo,
>      then it used the default one which is missing GB.
>
>      Best,
>      JN
>
>      On 2020-10-17 07:14, chandra shekhar maurya wrote:
>      > Dear users,
>      > During using Gay-Berne interactio, i am geting bellow error. Please
>      > suggetme , how can i correct i?
>      >
>      > Box size 88.6226925452758
>      > Traceback (most recent call last):
>      >   File "test.py", line 51, in <module>
>      >
>      >
>      system.non_bonded_inter[0,0].gay_berne.set_params(eps=lj_eps,sig=lj_sig,cutoff=lj_cut,
>      > k1=k)
>      > AttributeError: 'NoneType' object has no attribute 'set_params'
>      >
>      > Thanks & Regards
>      >
>      > Chandra Shekhar Maurya
>      > Mechanical Eng. Dept.
>      > Indian Institute of Technology Patna
>      >
>      > Contact No:9793572837
>      >
>      > On Tue, Oct 13, 2020 at 9:33 PM <espressomd-users-request@nongnu.org>
>      > wrote:
>      >
>      >> Send Espressomd-users mailing list submissions to
>      >> espressomd-users@nongnu.org
>      >>
>      >> To subscribe or unsubscribe via the World Wide Web, visit
>      >> https://lists.nongnu.org/mailman/listinfo/espressomd-users
>      >> or, via email, send a message with subject or body 'help' to
>      >> espressomd-users-request@nongnu.org
>      >>
>      >> You can reach the person managing the list at
>      >> espressomd-users-owner@nongnu.org
>      >>
>      >> When replying, please edit your Subject line so it is more specific
>      >> than "Re: Contents of Espressomd-users digest..."
>      >>
>      >> Today's Topics:
>      >>
>      >> 1. Regarding dealing with non-spherical particles in Ferrofluid
>      >> - Part I (chandra shekhar maurya)
>      >> 2. Re: Regarding dealing with non-spherical particles in
>      >> Ferrofluid - Part I (Rudolf Weeber)
>      >>
>      >>
>      > ----------------------------------------------------------------------
>      >>
>      >> Message: 1
>      >> Date: Tue, 13 Oct 2020 19:30:12 +0530
>      >> From: chandra shekhar maurya <chandra15294@gmail.com>
>      >> To: espressomd-users-request@nongnu.org,
>      >> espressomd-users-owner@nongnu.org,
>      >> espressomd-users@nongnu.org
>      >> Subject: Regarding dealing with non-spherical particles in
>      >> Ferrofluid
>      >> - Part I
>      >> Message-ID:
>      >>
>      >> <CALf1gEwsVKt4AtCbqeDe0V2iN710x8aKZ_1+a8Gufw3wha8GvQ@mail.gmail.com>
>      >> Content-Type: text/plain; charset="utf-8"
>      >>
>      >> Dear users,
>      >> I am trying to do simulation for "Ferrofluid - Part I", using
>      >> non-spherical particles.
>      >> So how can I deal with non-spherical particles like ellipsoid, flake
>      >> shape.
>      >> Your help will be highly obliged.
>      >>
>      >> *Thanks & Regards*
>      >> Chandra Shekhar Maurya
>      >> Mechanical Eng. Dept.
>      >> Indian Institute of Technology Patna
>      >> Contact No:9793572837
>      >> -------------- next part --------------
>      >> An HTML attachment was scrubbed...
>      >> URL:
>      >>
>      >
>      <https://lists.nongnu.org/archive/html/espressomd-users/attachments/20201013/d4cd6fa4/attachment.html>
>      >>
>      >> ------------------------------
>      >>
>      >> Message: 2
>      >> Date: Tue, 13 Oct 2020 16:31:20 +0200
>      >> From: Rudolf Weeber <weeber@icp.uni-stuttgart.de>
>      >> To: chandra shekhar maurya <chandra15294@gmail.com>
>      >> Cc: espressomd-users@nongnu.org
>      >> Subject: Re: Regarding dealing with non-spherical particles in
>      >> Ferrofluid - Part I
>      >> Message-ID: <20201013143120.GA1918947@icp.uni-stuttgart.de>
>      >> Content-Type: text/plain; charset=us-ascii
>      >>
>      >> Hi Chandra,
>      >> On Tue, Oct 13, 2020 at 07:30:12PM +0530, chandra shekhar maurya
>      >> wrote:
>      >>> I am trying to do simulation for "Ferrofluid - Part I", using
>      >>> non-spherical particles.
>      >>> So how can I deal with non-spherical particles like ellipsoid,
>      >> flake shape.
>      >>> Your help will be highly obliged.
>      >> For ellipsoidal particles, you can use the Gay-Berne interaction,
>      >> which is available in Espresso.
>      >> For other cases, you can make use of the raspberry model as an
>      >> approximation (using Espresso's VirtualSitesRelative feature).
>      >> See e.g., the works on magnetic cube-like particles by Kantorovich
>      >> et al.
>      >>
>      >> Regards, Rudolf
>      >>
>      >> ------------------------------
>      >>
>      >> Subject: Digest Footer
>      >>
>      >> _______________________________________________
>      >> Espressomd-users mailing list
>      >> Espressomd-users@nongnu.org
>      >> https://lists.nongnu.org/mailman/listinfo/espressomd-users
>      >>
>      >> ------------------------------
>      >>
>      >> End of Espressomd-users Digest, Vol 117, Issue 1
>      >> ************************************************
>
>      ------------------------------
>
>      Subject: Digest Footer
>
>      _______________________________________________
>      Espressomd-users mailing list
>      Espressomd-users@nongnu.org
>      https://lists.nongnu.org/mailman/listinfo/espressomd-users
>
>      ------------------------------
>
>      End of Espressomd-users Digest, Vol 117, Issue 3
>      ************************************************


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