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Re: [ESPResSo-users] Rigid Objects using OIF


From: Ulf Schiller
Subject: Re: [ESPResSo-users] Rigid Objects using OIF
Date: Sat, 22 Feb 2014 09:36:41 +0100
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On 02/22/2014 08:31 AM, Ivan Cimrak wrote:
Dear Markus,

In the oif-framework you can use objects that are "very stiff", but not
completely rigid. This approach works very well.

Hi,

This would still not be a nearly rigid object, since there is nothing that prevents mass flux across the interface. So it is rather a porous object which may or may not work so well. The problem of mass flux is an issue even if you use bounce-back as soon as the object starts moving relative to the grid. There is quite some literature addressing this, for example, under the keyword fluid-structure interaction.

Regards,
Ulf

--
Dr. Ulf D. Schiller                        Building 04.16, Room 3006
Institute of Complex Systems (ICS-2)       Phone:   +49 2461 61-6144
Forschungszentrum J├╝lich, Germany          Fax:     +49 2461 61-3180

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