Points List Settings

Dit_ · May 2020

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

Alex · May 2020

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

Dit_ · May 2020

Dit_ · May 2020

Okay. Thank you very much for your explanation

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Points List Settings

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