Heat Source
When the Particle release specification is set to Specify current, the Heat Source subnode is available from the context menu (right-click the Wall parent node) or from the Physics toolbar, Attributes menu. It defines an accumulated variable for a boundary heat source using the kinetic energy of the incident particles.
Accumulator Settings
Select an option from the Accumulate over list: Particles in boundary elements (default) or Particle-wall interactions.
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For Particles in boundary elements the accumulated variable is only affected by particles that freeze or stick to the boundary element.
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For Particle-wall interactions the accumulated variable is affected by all particles that hit the boundary element, including those that pass through or are reflected by the boundary.
Heat Source Theory