Page 427 - IJB-9-6

International Journal of Bioprinting Versatile pomelo peel-inspired structures

Figure 4. (A) Compression process. (B) FEA model of compression with mesh. (C) FEA model of heat dissipation.

Table 2. Mechanical properties of Al-Mg-Sc-Zr applied in this of the surface, and T is the average temperature of the fluid
f
simulation [40] (the average temperature of the fluid inlet and outlet).
[34]
Property Young’s Yield Ultimate Elongation D is the hydraulic diameter .
h
modulus, stress, stress, (%)
E (GPa) σy(MPa) σu (MPa) 4 AL (V)
ff

h
Value 70.2 302 ± 3 382 ± 5 22.5 ± 0.5 D = S
where A is the flow area at a minimum cross-section, L is
ff
BPPSs, several indicators were employed in this study as the heat sink length in the flow direction, and S is the heat
follows [34,42] : transfer surface area.
Heat transfer coefficient (h) represents the heat transfer Reynolds number (Re) is a dimensionless number
performance per unit area of the structure. characterizing airflow rate.
Q
h = w (IV) ρ aU m D (VI)
w (
AT − ) Re = μ ⋅ h
T
f
where Q is the heating power, A is the area of the heating where ρ is the density of air, U is the inlet mean velocity,
a
m
w
surface, T is the average wall temperature at the fluid side and μ is the dynamic viscosity of air.
w
Volume 9 Issue 6 (2023) 419 https://doi.org/10.36922/ijb.1011