helicopter thru cloud

[Marcus_Litterer]

i have a helicopter flying thru clouds and i need it to interact with the cloud but every-time the heli goes thru cloud the whole cloud explodes. Any ideas how to fix this just want the part of the cloud that the heli goes thru to interact not whole cloud.

[Svetlin.Nikolov]

You have to find out why it explodes in order to figure out what to do about it.

Just guessing - if the movement of the helicopter is too fast, or maybe the movement of the rotor is too fast, go to its right click properties and reduce the motion velocity multiplier.

Also, it could be that your geometry is not clean and watertight, which could break the solver. As always, make sure to have no inverted normals, no overlapping faces, and that the geometry is closed and there are no missing faces.

Hope this is in the right direction

[Marcus_Litterer]

Thank you for the info i already have tried the motion velocity multiplier, since you mentioned the geometry thing that might be the issue i will try that

[Marcus_Litterer]

unfortunately still same problem tried with a sphere no luck have outgoing velocity volume brush from 100-0 2 frames

[georgi.zhekov]

Hey,

Can you send over the scene so we can take a look what is going on?

Thanks!

[Marcus_Litterer]

I would like to send the file but cannot it is company property, but thank you for the offer and the help.

[georgi.zhekov]

We could sign an NDA if needed (if that's an option - just send a mail to our support and they will help you out) or if possible you could remove all of the confidential assets from the scene and send it over.

Thanks!

[joconnell]

unfortunately still same problem tried with a sphere no luck have outgoing velocity volume brush from 100-0 2 frames

Sorry outgoing velocity brush? Are you using the helicopter and it's blades as a source that's pushing out velocity along the normals of it's polygons? It should behave well if you just have the regular animated mesh colliding with the grid?

[squintnic]

i can recommend jess pitelas new phoenix training for this (and many other) common situations.
short and to the point videos with example files to deconstruct. i believe a combo of his static smoke, rotor wash and falling osprey tuts should give you a comprehensive overview of this type of effect.

[Marcus_Litterer]

Sorry outgoing velocity brush? Are you using the helicopter and it's blades as a source that's pushing out velocity along the normals of it's polygons? It should behave well if you just have the regular animated mesh colliding with the grid?

no cloud is volume brush cloud is source