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Documentation : Effex : Objects : Channels : Channels

### Params

Params Display
Params

#### Diffusor

Takes a Grid Diffusor node that if linked (which is optional) will diffuse (or blur if you can work better with that naming) the data inside of the grid.
It is most useful for diffusion of temperature grids to simulate the diffusive nature of temperatures (also matters concerning rendering).
And it is a necessity if you have a fuel-combustion setup to allow fire to ignite other fuel areas!

Params::Attributes

#### Minimum Value

The minimum floating point value this channel can take.
Example (Gaseous Fluid Simulation):
If a channel is used to store smoke densities, temperatures and similar the minimum value of 0.0 means the cell has no smoke, temperature etc. in it. So it is the perfect minimum value for this task.
Example (Viscous liquid Simulation):
If a channel is used to store viscosity values the minimum value may be higher than 0.0. If I wanted to not let the viscosity get lower than 0.1, I set it as minimum value (and clearing value).

#### Maximum Value

The maximum floating point value this channel can take.
Example (Gaseous Fluid Simulation): If a channel is used to store smoke densities the maximum value of 1.0 means the cell is full of smoke. So it is the perfect (most convenient and straight forward) maximum value for this task.
For a temperature grid you would probably set the value to something like 5000 (as the whole framwork operates in SI units the unit for temperature is kelvin).
Example (Viscous liquid Simulation): If a channel is used to store viscosity values the maximum value may be higher than 1.0. If I wanted to allow the viscosity to be as high as 10000 I set it as maximum value. No cell will then have a value higher than 10000.

#### Clearing Value

Whenever you activate "Clear each Frame" or the grid is cleared by the framework, the whole grid and consequently all grid cell will be initialised with the clearing value.
This is the initial state of the data then.

#### Clear each Frame

Clears all data in the 3d grid at each frame, initialising it with the Clearing Value.

#### Advection

Turns on/off the advection of the grid. Turning it off is e.g. necessary (or useful) if you are using this grid only to store data that is not dynamically transported by a velocity field (fluid dynamics for example), only used to store temporal data or if you are loading cached data (via a Grid Cacher) into this channel.

#### Ignition temperature

Defines the minimum temperature required to ignite the fuel (see Combustion operator). Different fuels have different ignition temperatures.
By setting this value you can easily define different types of fuel by ignition temperature.

#### Cooling Point

This value defines the temperature that flames need to reach before the temperature starts to cool down (this is a natural process in the combustion stage).
Normally you set this to a value near the maximum temperature (defined in the used temperature channel). 90% of the max. temperature is a good reference value.

#### Flames Lifetime [sec]

Defines how long the flames need to reach until they start to cool down (so how long it takes until the temperature reaches the cooling point).
This value is used by the Combustion operator (non-fuel mode) and is given in seconds.

#### Flames Afterlife

Defines how long the flames live after they reached the Cooling Point (in other words how long it takes until the data is reduced to 0.0)