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[ESPResSo-users] Proper use of command lbboundary
From: |
Salvador H-V |
Subject: |
[ESPResSo-users] Proper use of command lbboundary |
Date: |
Mon, 5 Mar 2012 16:09:43 -0600 |
Dear ESPResSo users,
I want to simulate a quasi-2Dimensional suspension of finite-size spheres using Lattice Boltzmann.
In order to use LB, i am using a cubic-box for my simulations but the system is highly confined trough wall constraints.
agrid 1.0
bl 32
setmd box_l $bl $bl $bl
To constraint the spheres (diam = 1), I am using the following parameters:
set blz_wall [expr {2.0 * $diam}]
set wall1 [expr {$blz*0.5 - 1.5} ]
constraint wall normal 0 0 1 dist $wall1 type 1
set wall2 [expr {-1.0*($wall1 + $blz_wall) } ]
constraint wall normal 0 0 -1 dist $wall1 type 1
Although I am able to confine my system and run the simulation with the lbfluid command, when I try to include constrictions for the fluid I get always the following error (I had tried different situations):
*** Process received signal ***
Signal: Segmentation fault: 11 (11)
Signal code: Address not mapped (1)
Failing at address: 0x0
*** End of error message ***
Segmentation fault: 11
I was wondering if it is possible to add fluid constraints/boundaries at the same position/coodinates that those of the wall constraints or should exist a gap between them? Is there any restriction in the distance-separation between the boundaries for the fluid?
Thanks a lot in advance,
Salvador HV
- [ESPResSo-users] Proper use of command lbboundary,
Salvador H-V <=