Table 1 The parameters used in the numerical model.

From: Influence of layer thickness and extrusion ratio on strand morphology, porosity, surface roughness, and anisotropic mechanical properties in FDM

Variable

Symbol

Value

Unit

Inlet velocity

U

50, 37.5, 25

mm/s

Printing speed

V

50

mm/s

Layer thickness

h

0.2, 0.3, 0.4

mm

Diameter of nozzle

d

0.4

mm

Melt viscosity

µ

1000

Pa·s

Melt density

ρ

1.2

g/cm3

Surface tension coefficient

σ

0.03

N/m

Contact angle

θ

130

°

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