Smoke with wind, more control needed

[TSR_trix]

Hi guys,

I have this case where I produce smoke from volcano. What I need is just a column of a dense smoke rising up and bend after a moment.
With a standard wind space warp I cant get it, cause it is a global force which means the smoke starts bending also from the bottom of the column, not in some part of it where I would like.
Max wind doesnt have a right falloff which could be the answer.

Could there be some other way to control the smokes traveling through the air?

This could be the result I try to achieve.
http://i.telegraph.co.uk/multimedia/...o_1017893i.jpg

[Ivaylo Katev]

you can use the mapper control over the velocity channel. set up a texture that has color (0,0,-1) in the points above some z value and apply it in the mapper

second option: cooling+negative smoke buoyancy. actually this is the real case, the smoke is heavy, but is moved by the hot gases

[TSR_trix]

Thanks Ivaylo again for the quick reply.

What kind of a texture should I use in this texture option?

Cooling+negative buoyancy I already try, but still I dont know how to control the direction of the smoke after the cooling, cause the wind affects uniformly also to the bottom of the simulation

[Ivaylo Katev]

well, the easiest way is to use the standard gradient texture, but it has an issue - the mapping offset does not work, that makes the task complicated.

[Da_elf]

there are also other wind modifiers you can use that are not global. go to www.maxplugins.de and find a nice one. i assume all space warps would work with pheonix