2011/03/10

Phoenix FD Tutorial: nuke cloud



Tutorial results:

In this short video tutorial I will show you how to create a realistic mushroom-cloud with ChaosGroup PhoenixFD. Here are some of the important steps:


Scene setup:
One directinal light, PHSource, a cylinder and PHSimulator will be enough.

Key your Discharger from 300 to 5. (From frame 0 to 11). Higher Temp will make your cloud looks more noisy and chaos. Higher Smoke value bring more detail of cloud.

Here are must important parameters that contribute simulation results. Cell size means voxel size but lower the cell size doesn't guaranty a realistic results. Increase the Maximal step when you lower your cell size. Play around with your smoke/temperature amounts to get the best results.

Cloud should in dark gray color. More scatter multiplier makes cloud more transparent.
A directional light with higher Mutiplier value will make your rendering looks much contrast and dynamic. Here I use vaule of 5 and orange color (the color of sun). Don't forget to turn on Atmosphere Shadow.

Sampler Type is one of the key parameter to make your cloud looks sharper and realistic. (The default is set to Spherical)

Turn on your GI, a very low preset of Irradiance Map will be enough.

Make your Sky light half bright. Gamma to 2.2.

Tutorial link (running time is about 15mins):
PhoenixFD mushroom cloud (Youtube video)



Some random rendernings



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3 comments:

Sai said...

讚啦,這是我目前看到最好看的了~

hammerbchen said...

謝啦, 晚點放上中文版的教學

Unknown said...

一般來說大樓倒塌是因為地基損壞才會先傾斜然後倒塌崩裂,所以大樓爆破都只會將火藥裝在地基樓層。但你的問題是從樓頂開始破碎,由上往下破碎,所以顯得不自然,目前我知道符合你這種情形的只有美國世貿大樓倒塌是這樣,因為他是上層被破壞才往下壓毀