This tool sets the initial smoke conditions in the box. It does not continuously generate smoke as a Source from volume does in a container. This tool can be used, for example, to generate a puff of smoke or dust from a collision.
Using Smoke from Object
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Create a Smoke Container with a geometry object inside.
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Select the geometry object to convert to a smoke object.
Note
The geometry object has to have volume to be a valid source for volume-based smoke. For example, this tool will not work on a curve.
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Click the Smoke from Object tool on the Volume Fluids tab.
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Select the container to set the initial conditions and press Enter to confirm your selection.
To... | Do this |
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Change the display option of the simulation |
Alter the options on the Guides tab of the Smoke Object. For specific parameter help see the Smoke Object node help. |
Change the buoyancy rate |
Alter the default Buoyancy Lift on the Forces tab of the Smoke Solver. This parameter controls the rise and fall of smoke. |
Change the cooling rate |
Alter the default Cooling Rate on the Forces tab of the Smoke Solver. This parameter controls how fast the temperature field trends to zero. |
Make the smoke cold (and fall) |
On the Volume Ramp node in your object, select the right-side handle of the Scalar Ramp scale and change the Value to -1. Note The temperature does not work on any real world scale such as degrees or kelvins. Houdini works on the premise that 0 is neutral, a positive value is warm, and a negative value is cold. |
See also |