Hello, i am learning Houdini and i want to make Iron man thrusters like effect for my iron man model and animation. I have tried using pyro and i am just can't get the shape to look the way i want. If anyone has a tip on how i should approach making the effect it would be highly appreciated.

Here is the reference of the effect i am aiming for, i know that big part of the effect is shading the volume and compositing but i am more concerned about getting the shape right at the moment.

Thanks.

Have a look at the Rocket Engine Orbolt asset to see of one method to create this type of thruster effect.

http://www.orbolt.com/asset/SideFX::pyrojetexhaust [orbolt.com]

The effect is so fast at the start that it is all in the velocity shaping you pump in with the emitter and with a velocity field you construct around the emitter to affect for the first couple frames of the sim to shape it.

Thanks a lot Jeff it is very helpfull.

I have been trying for some time to recreate the effect. I made a tube to which i added velocity trough point sop, more less same way as in that example.

I have set source for my pyro and when i want to input velocity into it it doesn't work. I have been trying and messing around with the file so much that i have probably messed up something.

It seams that it is not correctly transferring the velocity from emitter because im not getting anything when i plug it in. Pyro solver should have temp diffusion set to 0 and also buoyancy set to 0 and combustion turned off so that the velocity that is added trough source volume could direct the shape of the fluid , but somehow this doesn't work for me.

Can you check the file , am i doing something wrong , did i miss a crucial step?

Thanks

Is it possible to have only temperature field and get it to work with pyro shader, because for me it doesn't seem to work. When i plug in temperature field into pyro and render it i get nothing but when i turn on the combustion and when i have some other fields it gets rendered , can anyone enlighten me why is it like that? Do i simply need to have density or other fields in my sim? All i have are vel ,fuel, and temperature fields.

PS : I have only temperature field plugged in pyro shader, there is nothing else being used in the shader.