The fan object is used in fluid simulations. It generates a fluid environment and produces a flow with the following controls:
Constant - The flow does not depend on the distance from the axis.
Linear - The flow decreases to zero at the outer fan edge at a constant speed.
Quadric - The flow speed is defined by a 2nd order parabola: speed = k*d*d, where d is distance from the outer edge towards the axis. This kind of flow appears in real world water pipes.
Constant - The flow does not depend on the distance measured along the fan axis.
Linear - The flow is inversely proportional to the distance: flow = maxflow/(c+k*distance)
|The actual flow speed and other fluid properties can be defined from the Physics tab of the property window.|