Which term represents the diffusion of the property Φ?
a) div(Φ)
b) div(ΓgradΦ)
c) curl(Φ)
d) curl(ΓgradΦ)
Answer: b
Explanation: div(ΓgradΦ) represents diffusion. Diffusion is the movement of fluid from a high concentration to low concentration within the system.
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