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Particle Speed Help

Posted: Sat, 9th Jul 2011, 4:55pm

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FXhomer132239

Force: 800 | Joined: 1st Mar 2011 | Posts: 5

CompositeLab Pro User EffectsLab Pro User

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I created a smoke effect, but when I render it the smoke looks more like steam shooting out of a Tea Kettle. How do I slow down the speed of the particles so it looks more like a gentle stream of smoke or vapor coming out of a pipe (trying to get a Liquid Hydrogen leak type effect for a shot of a model space shuttle)

Thanks
Posted: Sat, 9th Jul 2011, 7:50pm

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Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

You need to use the Speed Gradient in the particle controls. Its a little tricky to find, as the name isn't spelled out, but start by finding the Speed: randomizer slider. Then look just above it, and there is a long box with a line running through it. Click in this box, and the Speed gradient will open. There you can slow down the particles, and add additional control points to adjust the speed of the particles across their lifetime.
Posted: Sat, 9th Jul 2011, 8:07pm

Post 3 of 7

Biblmac

Force: 852 | Joined: 12th Jun 2007 | Posts: 1513

EffectsLab Lite User Windows User

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Click on the "line" above the speed ranomizer and it should pop up a screen like this:


When you're done with that move the line up or down using the "gradient value" slider. Then just RAM preview and watch it. Play with it till you get it right! biggrin

EDIT: While I was creating/editing the screen shot and stuff Axeman beat me to it.
Posted: Sat, 9th Jul 2011, 11:30pm

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Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

Hehe, that's the price you pay for providing an clear, illustrated answer to the question.

Glad you added the pic though, pictures always help make things clearer.
Posted: Sun, 10th Jul 2011, 2:54am

Post 5 of 7

Biblmac

Force: 852 | Joined: 12th Jun 2007 | Posts: 1513

EffectsLab Lite User Windows User

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Haha yeah, I actually had to figure it out myself first. I didn't know you could change the speed of particles till just now... I think it goes without saying, I played around with ELL for about an hour today after learning this wink

Oh and I was trying to make a video tutorial for this, but I figured that such a small question didn't really require a video.
Posted: Thu, 14th Jul 2011, 1:35am

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FXhomer132239

Force: 800 | Joined: 1st Mar 2011 | Posts: 5

CompositeLab Pro User EffectsLab Pro User

Gold Member

Thanks guys for the help, Really appreciate you sharing your expertise - and thanks to FXHome for this forum, it is a lot of help. Especially for us new guys
Posted: Thu, 14th Jul 2011, 5:21am

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Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

Hey. we were all new guys once. Though this is a particularly helpful and friendly community, and a great place to learn. Feel free to ask questions when you get stumped on something.