a 
NOTATION 
Coefficient of infinite series, Rauation [41] 
Outer radius of coating 
Effective overheating ratio 
Overheating ratio 
Coefficient of infinite series, Equation [91] 
Wire radius and inner radius of coating 
Cylinder function 
Specific heat at constant pressure + 
Coefficient of infinite series, Equation [68] 
Modified cylinder function 
Group of functions defined in Equation [64] 
Functions defined in Equations [24] and [32] 
Functions defined in Equations [75] and [84] 
Electric current flowing in wire 
Time constant of wire 
Time constant of a constant-current coated wire for a change 
in convective cooling 
Time constant of a constant-current coated wire for a change 
in current input 
Time constant of aconstant-temperature coated wire for a change 
in convective cooling 
Linear combination of cylinder functions, Equations [55] and [56] 
Linear combination of cylinder functions, Equations [33] and [34] 
Function of U from King’s Equation [6] 
Parameter defined in Kquation [21] 
Function defined in Kquation [10] 
Parameter defined in Equation [21] 
Resistivity of wire at temperature T, 
Resistivity of wire at temperature 7, 
Resistivity of wire at temperature 7, 
A radius 
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