Jump to content

Some FLIP questions


catchyid

Recommended Posts

Hi,

I have some FLIP questions, any help is appreciated :)

1- In particles reseeding, how is "Particle reseeding -> Particles per Voxel“ useful? meaning, what difference does it make to set it to 4,8 or 16?

2- ”FLIP Object->Grid Scale“ and ”Particle reseeding->Particles Per Voxel" seem to define the same thing? i.e a bigger grid will have more particles per voxel, so why redefine the number of particles per voxel again?

3- What does mean that particles are “unresolved” ?

4- I understand that the “pressure projection” solve is the process that changes particles velocities to compensate for pressure differences (i.e. move particles from high to low pressure). My question: if the number of particles per voxel can change freely (i.e. particles reseeding, voxel size, …) what really defines pressure? i.e. what makes some areas of fluid have more pressure than others?

5- According to docs, Particles reseeding will increase spawn particles if they are below a certain count per voxel and vise versa. My question: what makes particles diseapear in the first place? I understand they are moving, but so what? If they leave a voxel then the voxel becomes empty and it's even “wrong” to create particles just to meet the minimum particles count per voxel? The same question applies on having “too” many particles per voxel, what this happens in the first place and what does it mean?

 

Thanks...

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...