About this site. ScriptSpot is a diverse online community of artists and developers who come together to find and share scripts that empower their creativity with 3ds Max. Our users come from all parts of the world and work in everything from visual effects to gaming, architecture, students or hobbyists. This will result in increase of simulation steps required to satisfy the CFL Condition, because velocities will be able to carry cell data through to more voxels.
It is not always an imperative to have many simulation steps as fluid motion can look convincing even with one. You always need to find the balance between simulation time and "mathematical correctness" of the simulation. Maximum Simulation Steps - The number of steps is directly controlled through CFL Condition parameter value, but with this parameter, you can limit maximum number of steps.
Variable Density Solver - We all know that high density fluid will be able to penetrate into the low density fluid much more that the way around. In FumeFX you can account for temperature and smoke density to simulate such behavior. For easier effect control, we recommend that you either use vd Smoke Multiplier or vd Temp Multiplier.
To disable Variable Density solver for either smoke of temperature, simply set vd Multiplier to zero. Keep in mind that enabling this option could increase time for solver to get to the solution as it has to account for additional divergence that is created. Use FumeFX4 Solver - With FumeFX 5 release there were many changes and improvements throughout the simulation core which inevitably led to quite different simulation results.
This option should be used to achieve visually similar simulations to FumeFX 4. Advection Type - Default advection is a good all-purpose advection, but it generates visible dissipation. Advanced fields advection that will result in lower dissipation. This advection operates on fire, smoke and temperature fields, while velocities are still advected using Default advection.
Advanced fields and vels advection operates on all fields and velocities as well. This type of advection is excellent for slow moving fluids while highly divergent and fast moving fields might result in artifacts in the form of lines or crosses. Keep in mind that this advection is very good in preserving small scale detail, so the vorticity value can be kept really low around 0.
Conservative advection is amazing at preserving mass and velocity and is essential for slow moving smoke. Quality determines how strong the conservation will be and it will have a significant impact on the simulation time. Advection Stride -. This value is relative to Grid Spacing. There is no significant benefit in using advection stride below 1. Cubic I nterpolation - If you need better quality, you will want to check this option.
Simulation times will rise considerably, but less dissipation will occur and more swirls will be created. Whenever you use any type of Advanced advection, cubic interpolation will be used for the velocity field, while linear interpolation will be used for smoke, fire and temperature.
Cubic interpolation is not supported with conservative advection. Gravity - This value defines gravity strength. The resulting force of gravity on a fluid causes buoyancy. That means that the fluid that has a different density than the surrounding will rise or fall. Hot air from fire has lower density than the surrounding air which causes it to rise. Telephone Number. Account Supervisor:. Supervisor Email:. Supervisor Telephone:.
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DreamScape 2. Afterburn 4. FumeFX 1. Posted in: Downloads , Learning , Tutorials , Videos. Tagged: 3ds Max , FumeFX.
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