ASHTCC	Arrow-shaped high thermal conductivity channel
DMTD	Dimensionless maximum temperature difference
HCM	Heat conduction model
HCP	Heat conduction performance
HST	Hot spot temperature
HTCC	High thermal conductivity channel
SDFO	Single degree of freedom optimization
SHGB	Square heat generation body
TC	Thermal conductivity
TWDFO	Two degrees of freedom optimization
THDFO	Three degrees of freedom optimization
Nomenclature
$A_0$	Area, ${\mathrm{m}}^2$
$k$	Thermal conductivity, $\mathrm{W}\mathrm{/}\mathrm{m}/\mathrm{K}$
$\tilde{k}$	Ratio of the thermal conductivity
$L$	Side length of the SHGB, $\mathrm{m}$
$L_1$, $L_2$, $H_1$, $H_2$	Characteristic sizes of the ASHTCC, $\mathrm{m}$
${\tilde{L}}_1$, ${\tilde{L}}_2$, ${\tilde{H}}_1$, ${\tilde{H}}_2$	Nondimensional characteristic sizes of the ASHTCC
$T$	Temperature, $\mathrm{K}$
$q^{‴}$	Heat generation rate in the SHGB, $\mathrm{W}/{\mathrm{m}}^3$
$\varphi$	Area ratio of the HTCC