Daniel_Voloshkevych Posted May 11, 2022 Share Posted May 11, 2022 Hello folks, I am trying to re-create the "rocket exhaust expansion effect", when a rocket goes up and the flame is expanding because of the thiner atmosphere.. I have now 2 particle simulations, which are my main source for my pyro simulation.. but when I attached a pyro sim to the particle sim, then there are small flame points: as seen on my screenshot.. (it was rendered with Blender, Cylces)... and it also looks that ugly in Houdini... how can I achieve the wanted effect like on the reference picture: and how I need to set up my pyro sim, so that these dots will dissapear and will get visible as a seamless flame like on the reference picture..? - I have tried to add substeps but But the main thing is, that I am following the SpaceX Starship programm, and there will be a much bigger Rocket with more engines... And now i am wondering how can I create this massive flame which will be produced by this massive rocket... I have attached 2 images, and 1 video, where I am showing my current particle simulations: one image my current simulation... the other image is the reference image... and the 3rd image is the problem which I am facing right now... I would really appreciate some help from this community, thanks in advance Daniel 2022-05-11 14-03-50.mp4 Quote Link to comment Share on other sites More sharing options...
kushaldas Posted May 11, 2022 Share Posted May 11, 2022 Hard to tell without looking at a hip to see how you're sourcing, but generally it helps to fade off the density based on the age of the particle. May also be helpful to use a pop proximity in your particle sim to kill any particles that stray too far from your main sim, so you don't have stray dots of density in your volume source. Quote Link to comment Share on other sites More sharing options...
Daniel_Voloshkevych Posted May 11, 2022 Author Share Posted May 11, 2022 Rocket exhaust expansion_test1.hipnc so here is the hip file for you Quote Link to comment Share on other sites More sharing options...
Atom Posted May 12, 2022 Share Posted May 12, 2022 (edited) Try adding some velocity blur on the rasterizeattributes node. Edited May 12, 2022 by Atom Quote Link to comment Share on other sites More sharing options...
Daniel_Voloshkevych Posted May 12, 2022 Author Share Posted May 12, 2022 Thank you, it looks better, but I dont know how to give more fuel to the outer regions so that they should be more visible... Quote Link to comment Share on other sites More sharing options...
Recommended Posts
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.