6

6

ASTM6,6

[12]

Heat

transfer rate

ASTM5,5

Thermal diffusivity (Dth) depends on heat transfer rate (qH), according to the implicit function:

D t h = α s = ( z 2 t ) f ( ( ρ s z 4 λ s T i t 3 ) , ( z 2 C s t 2 T i ) , ( z 3 V s ) , ( T i ( d T d z ) z ) , ( B i ) , ( z 2 A ) , ( ρ s z 5 t 2 q H ) )

Where the terms, definitions and dimensions of ( D t h , z , t , ρ s , λ s , T i , C s , V s , B i , A , q H ) are presented in detail in the below terminology (Table A8) of the Appendix. For clarification purposes, (A) refers to specimen sectional area. Rayleigh’s method of indices was deployed along with the echelon matrix procedure as an additional confirmation method.