06-05-2007, 02:47 AM
Aright i opened the scene .. heres the things Don:
1-Your not Seeing a Clean Burn cause you have everything By default in their emiting lots of stuffs and duplicating effects on top of the other.. for what you want to achieve i would start with turning off the Render Smoke from the Rendering tab .. you want to see fire right ? well ur fire is their but hidden Under the smoke .. thats for 1
2- Even then , you ll see a small burn and thats it ... pretty agitated.. second thing you want to do is gon in your fuel Tab under simulation and Put the ingition temperature Higher ( ex:100) .. I say put it higher cause you kept the Temperature of your second source ("start Source") at 300 ..
3- then to really see your effect and setup the right "Burn State " on your voxels , i suggest you turn Off the Start Source emitor , and ANimate the boolean On active from frame 10 to 15 .. So its on for 5 frames and then stops..
4- The Other Thing and thats what i mean by duplicates is that in your start source , your emiting smoke and most importantly Fuel again .. When you r trying to Setup a "Burn Phase" , you want to keep it simplist at first so you can tweek every single details at the time based on ur desire.. So , in Short tearms , Put the Fuel of ur start source at Disabled and Kill the Smoke as well ( instead of set) ..
5- Hittin sim at this point will give u a nice Boom of fire at frame 10 to 15 and then poof dies.. now tweeking time.. Understanding that you want to produce more heat as Each Voxels gets burn , you increase the heat production gradually in ur simulation tab.. all the way till u hit 60 for exampl.. Then next thing is that youll remark fire "lenght " is Short so you wanna decrease your Burn rate till you hit 10.0 for example... Then Third thing you wanna tweek is the Expension of the Fire incrementing slowly till u hit about 60 .. Then you hit sim and what you get is actually a Fire ball at frame 10 to 15 igniting but your fire is slowly spreading to burn phase the Other Part of the fuel in your grid and it will die around 40 . After seting up properly the spread time ( heat production versus expension ration) , intensity ( fuel amount versus ignition temperature ratio) etc.. now you can start adding xtra smoke from the ignitor source , then more fuel if you want etc..etc.. just start with the basic idea than build up and remember your key settings for futur Setups..
lastly , you might want to read that post where i explained the same thing as well in probably other words : http://www.3dplanet.de/cgfluids/viewtopic.php?t=489
I hope that help ,
cheers
1-Your not Seeing a Clean Burn cause you have everything By default in their emiting lots of stuffs and duplicating effects on top of the other.. for what you want to achieve i would start with turning off the Render Smoke from the Rendering tab .. you want to see fire right ? well ur fire is their but hidden Under the smoke .. thats for 1
2- Even then , you ll see a small burn and thats it ... pretty agitated.. second thing you want to do is gon in your fuel Tab under simulation and Put the ingition temperature Higher ( ex:100) .. I say put it higher cause you kept the Temperature of your second source ("start Source") at 300 ..
3- then to really see your effect and setup the right "Burn State " on your voxels , i suggest you turn Off the Start Source emitor , and ANimate the boolean On active from frame 10 to 15 .. So its on for 5 frames and then stops..
4- The Other Thing and thats what i mean by duplicates is that in your start source , your emiting smoke and most importantly Fuel again .. When you r trying to Setup a "Burn Phase" , you want to keep it simplist at first so you can tweek every single details at the time based on ur desire.. So , in Short tearms , Put the Fuel of ur start source at Disabled and Kill the Smoke as well ( instead of set) ..
5- Hittin sim at this point will give u a nice Boom of fire at frame 10 to 15 and then poof dies.. now tweeking time.. Understanding that you want to produce more heat as Each Voxels gets burn , you increase the heat production gradually in ur simulation tab.. all the way till u hit 60 for exampl.. Then next thing is that youll remark fire "lenght " is Short so you wanna decrease your Burn rate till you hit 10.0 for example... Then Third thing you wanna tweek is the Expension of the Fire incrementing slowly till u hit about 60 .. Then you hit sim and what you get is actually a Fire ball at frame 10 to 15 igniting but your fire is slowly spreading to burn phase the Other Part of the fuel in your grid and it will die around 40 . After seting up properly the spread time ( heat production versus expension ration) , intensity ( fuel amount versus ignition temperature ratio) etc.. now you can start adding xtra smoke from the ignitor source , then more fuel if you want etc..etc.. just start with the basic idea than build up and remember your key settings for futur Setups..
lastly , you might want to read that post where i explained the same thing as well in probably other words : http://www.3dplanet.de/cgfluids/viewtopic.php?t=489
I hope that help ,
cheers
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