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This page provides information on the Body Force (PhoenixFDBodyForce) component.

Overview

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The Body Force creates a force to pull the fluid toward or away from a geometry object.

A positive Strength value produces a force that pulls fluid toward a geometry object

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, and can be used

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to make the fluid

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form the shape of the geometry; for example, making a liquid simulation form the shape of a letter, number, or logo for an interesting effect.

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Note that the force is pronounced outside the body, but the inside is replaced with a mechanism that suppresses the fluid's escape.

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Meanwhile, negative Strength values repel the fluid away from the geometry object.

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titleUI Path: ||Phoenix FD|| > Create > Body Force

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Body Force Object

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Body Object | body – Specifies the selection set used as an attractor.

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Remove Object – Removes selected objects from the body force calculation. 


Parameters

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Strength | strength – Specifies the force intensity. This parameter mostly affects the points outside the body. The fluid accelerates constantly towards the body until reaching it. 

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Liquid - affects the Liquid particles in a Liquid simulation.
Splashes - affects the Splash particles in a Liquid simulation.
Foam - affects the Foam particles in a Liquid simulation.
Mist - affects the Mist particles in a Liquid simulation.
Air - affects the space in a Liquid simulation where there are no Liquid particles, when Simulate Air Effects is enabled in the LiquidDynamics rollout. All particles such as Foam, Splash or Mist outside the liquid volume will be influenced.
Temperature - affects the voxels in a Fire/Smoke simulation where the Temperature is different than the default 300 Kelvins. The higher the temperature above 300 or the lower it is below 300, the stronger the effect of the force would be. You can find out more about Phoenix Grid Channel Ranges here.
Smoke - affects the voxels in a Fire/Smoke simulation where there is Smoke. The denser the smoke, the stronger the effect of the force would be.
Fuel - affects the voxels in a Fire/Smoke simulation where there is Fuel. The denser the fuel, the stronger the effect of the force would be.
Velocity - affect the voxels in a Fire/Smoke simulation where there is high Velocity. This way you can affect Drag particles.

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