Radiation in CHT

Video topic: when radiation actually matters in a CHT case, and what it costs to model correctly.

Talking points:

• Why radiation is nonlinear — T⁴ scaling vs. linear conduction/convection means radiation's relative contribution grows sharply at high temperatures; DO vs. S2S models trade accuracy for cost differently. (Neural Concept)
• A concrete magnitude — adding surface-to-surface radiation to an electronics-cooling case dropped peak CPU temperature from 355K to 340K (~5%) — a real, not academic, effect. (SimFlow)
• When convection alone isn't enough — framing for when to bother coupling radiation into a CHT run at all vs. when it's noise. (SimScale docs)

Sources:

• Neural Concept — radiation modeling entry
• SimFlow — S2S radiation entry
• Simscale — docs entry (radiation toggle)