3 Group of functions defined in Equation [78] 
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db (r,t) Temperature change f 
d (fr, 8) Laplace transform of ¢(r,¢) ft 
u(t) Function defined in Equations [48] and [71] 
@ Circular frequency 
* 
Starred quantities indicate a steady-state value 
} When these quantities have subscripts, 1 refers to wire, 2 to the coating, and 3 to the flow medium. 
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