Points List Settings
Hi..
I am quite new to DualSphysics. I wanna know about the pointslist because i am confused and i don't understand about it
In Points.txt you can define the following parameters:
"POINTSLIST"
BeginX BeginY BeginZ
StepX StepY StepZ
CountX CountY CountZ
I confused about the part step and count. what is it and what value that i must to input in StepX, StepY, and StepZ. And what value that i must to input in CountX, CountY, and CountZ?
I hope you want to expain it to me with a simple language, please. Because i really new in here
Thanks
Comments
Dear user
POINTSLIST
BeginX BeginY BeginZ %this will indicate the initial position
StepX StepY StepZ %this indicate the separation between numerical gauges
CountX CountY CountZ %this indicates the number of numerical gauges
For example you want to compute free-surface elevation at x=10, y=0 where still water level is initially at z=0
You are simulating a wave height of 0.1m and you are using dp=0.01m... therefore you can define points to detect free surface from -0.1 to 0.1 (0.2 amplitude)
Let us imagine the example:
POINTSLIST
10 0 -0.1
0 0 0.001
1 1 200
where:
BeginX=10, StepX=0 , CountX=1.... so FinalX=10
BeginY=0, StepY=0 , CountY=1.... so FinalY=0
BeginZ=-0.1, StepZ=0.001 , CountZ=200.... so FinalZ=+0.1
in this way we are creating 200 points at different Z positions at x=10 and y=0
which can be used to look for surface elevation position
Basically you want to create a list of points...
X Y Z
10 0 -0.1
10 0 -0.099
10 0 -0.098
10 0 -0.097
10 0 -0.096
(...)
10 0 -0.003
10 0 -0.002
10 0 -0.001
10 0 0.000
10 0 0.001
10 0 0.002
10 0 0.003
(...)
10 0 0.096
10 0 0.097
10 0 0.098
10 0 0.099
10 0 0.1
SO THAT 200 points with always the same X and Y (X=10, Y=0)
and with different Z values from -0.1 to 0.1: 200 points separated 0.001 (StepZ)
In this way FinalZ=BeginZ+StepZ*CountZ
Regards
Okay. Thank you very much for your explanation