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This feature creates a defined volume of particles. The size of this volume is defined by the emitter’s horizontal → “Scale” settings and the vertical value entered here. All dimensions are given in metres. By activating this option, the emitter’s speed value will be set to 0.0 automaticallyThe particles will still have an initial velocity determined under "Speed". To avoid this, set "Speed" to 0.
Speed
Here the particles' initial speed is defined in metres per second. Higher values will generate more particles per frame. Faster particles act with stronger forces on other particles or objects. The number of emitted particles also depends on the domain's “Resolution” settings. A value of 0.0 → stops the emission of particles.
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