Applied Science and Convergence Technology

Table 1

Materials used in analysis and properties of each material.

Material	Density (kg/m³)	Cp (Specific Heat) (J/kg⋅K)	Thermal conductivity (W/m⋅K)	Viscosity (kg/m⋅s)
Hydrogen (H₂)	Incompressible ideal gas $ρ = \frac{P}{R T / M_{ω}}$	According to temperature (Cp=a₁+a₂T+a₃T+a₄T³+a₅T⁴)	Calculated by Khimera	Calculated by Khimera
Tantalum (Ta)	16690	140	57.5	N/A
Aluminum (Al)	2719	871	202.4	N/A
Copper (Cu)	8978	381	387.6	N/A
Graphite (C)	2490	771	8.7	N/A
Silicon (Si)	2329	700	149	N/A
Steel (Fe)	8030	502.48	16.27	N/A

*a₁ = 1.360245E+05, a₂ = 3.402317E+00, a₃= -3.358423E-03, a₄= -3.907953E- 07, a₅= 1.705345E-09(300 ≤ T (K) < 1,000)

a₁ = 1.233753E+05, a₂= 2.887275E+00, a₃= -2.323560E-03, a₄= -3.807379E- 07, a₅= 6.527742E-09(1,000 ≤ T (K) < 5,000)

Applied Science and Convergence Technology 2023;32:7~11 https://doi.org/10.5757/ASCT.2023.32.1.7