# particle boundary out

Hello DualSPHysics developers

The problem is exit ellipse (floating body) from water

Particles out: 14 (total: 14)
particle boundary out> type:Floating cause:Position p:0 id:3220 pos:(-0.009603,5.000000,1.800016)

*** Exception (JCellDivGpuSingle::CheckParticlesOut)
Text: A boundary particle was excluded.

I cant attach here initial data

All the best
p87.JPG 29.9K

• edited May 2018
particle boundary out> type:Floating cause:Position p:0 id:3220 pos:(-0.009603,5.000000,1.800016)

A particle of the floating object moves far from Z limt

Try the same solution for the problem of boundary particles out the domain:
http://dual.sphysics.org/index.php/faq/#Q_12

Regards
• Gut, but Z max=4.05
This is not a solution to the problem:
http://dual.sphysics.org/index.php/faq/#Q_12
If it was so easy I would not bother you
This is a constant (frequent) error for moving boundary and floating bodies
• edited May 2018
We have explained many times that Zmax of the domain is computed in DualSPHysics once particles were created in GenCase...
The pointmax.Z=4.05 is NOT the size of the domain... it is only maximum Z to create particles, but once particles are created that value is never used...

in your case if maximum Z of particles created are, for example, 1.4... then domain limits in Z Max is 1.4...

you can see the domains of the limit in Run.out

again applying FAQ12 is the solution
• What is not correct in this data? :
geometry>
definition dp="0.005" units_comment="metres (m)">
pointmin x="-1.55" y="5.0" z="-0.05" />
pointmax x="1.55" y="5.0" z="4.05" />
/definition>
commands>
mainlist>
setshapemode>dp | real | bound
setdrawmode mode="full" />
setmkfluid mk="0" />
drawbox>
boxfill>solid
point x="-1.5" y="0" z="0.0" />
size x="3.0" y="5" z="1.5" />
/drawbox>
setdrawmode mode="face" />
setmkbound mk="20" />
drawbox>
boxfill>bottom
point x="-1.5" y="0" z="0.0" />
size x="3.0" y="5" z="2.7" />
/drawbox>
shapeout file="Boundary"/>
setdrawmode mode="full" />
setmkbound mk="51" />
move x="-0.15" y="0" z="0.50"/>
drawfilevtk file="Ellipse.vtk" />
shapeout file="Ellipse0" reset="true" />
/mainlist>
/commands>
/geometry>
• what is the error you obtained?