02-15-2022, 07:57 AM

Hello.

In FumeFx, you can control the System Scale with a script, but I don't quite understand the impact of this operation, so I'd like to ask for your help.

Is it the "unit" of the system that is changed by System Scale?

--In the case of Spacing

When the spacing is 1cm, 1voxel is formed by the following equation.

1(voxel)=1cm*1cm*1cm=1cm^3

If the System Scale is 0.1, does 1voxel become as follows?

1(voxel)=0.1cm*0.1cm*0.1cm*=0.001cm^3

--In the case of Velocity

In the case of Velocity is 1cm/s, if System Scale is 0.1, velocity will be 0.1cm/s?

--In the case of smoke density

If you change the System Scale, will the density of the smoke be as follows? The unit is not specified in the user guide, so I am guessing. Is this the correct unit?

If the amount of smoke is 1mg (mass) and 1 voxel is 1cm^3, then the density of smoke is 1mg/cm^3.

If the System Scale is set to 0.1

1(voxel)=0.1cm*0.1cm*0.1cm*=0.001cm^3

Therefore, the density of the smoke is as follows

1(mg)/0.001(cm^3) = 1000 (mg/cm^3)

This means that the density of smoke is 1000 times higher when the system scale is 0.1 than when the system scale is 1. (When the system scale is set to 0.1, the smoke becomes surprisingly dense.)

--Difference from Time Scale

Please tell me the difference between System Scale and Time Scale.

I'm sorry for asking so many questions. I would appreciate it if you could answer my questions.

In FumeFx, you can control the System Scale with a script, but I don't quite understand the impact of this operation, so I'd like to ask for your help.

Is it the "unit" of the system that is changed by System Scale?

--In the case of Spacing

When the spacing is 1cm, 1voxel is formed by the following equation.

1(voxel)=1cm*1cm*1cm=1cm^3

If the System Scale is 0.1, does 1voxel become as follows?

1(voxel)=0.1cm*0.1cm*0.1cm*=0.001cm^3

--In the case of Velocity

In the case of Velocity is 1cm/s, if System Scale is 0.1, velocity will be 0.1cm/s?

--In the case of smoke density

If you change the System Scale, will the density of the smoke be as follows? The unit is not specified in the user guide, so I am guessing. Is this the correct unit?

If the amount of smoke is 1mg (mass) and 1 voxel is 1cm^3, then the density of smoke is 1mg/cm^3.

If the System Scale is set to 0.1

1(voxel)=0.1cm*0.1cm*0.1cm*=0.001cm^3

Therefore, the density of the smoke is as follows

1(mg)/0.001(cm^3) = 1000 (mg/cm^3)

This means that the density of smoke is 1000 times higher when the system scale is 0.1 than when the system scale is 1. (When the system scale is set to 0.1, the smoke becomes surprisingly dense.)

--Difference from Time Scale

Please tell me the difference between System Scale and Time Scale.

I'm sorry for asking so many questions. I would appreciate it if you could answer my questions.