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Table 2 External boundary conditions

From: Three-Dimensional Numerical Study on the Metal Rotating Spray Transfer Process of High-Current GMAW

Boundary

\(\overrightarrow {{{v}}}\) (m·s−1)

P (Pa)

V (V)

\(\overrightarrow {{{A}}}\)(Wb/m)

Gas inlet

vg

PATM

\(\frac{{\partial {{V}}}}{\partial n} = {0}\)

\(\frac{{\partial A_\text{i} }}{\partial n} = {0}\)

Metal inlet

vm

PATM

\(- \sigma \frac{{\partial {{V}}}}{\partial n} = j\)

\(\frac{{\partial A_\text{i} }}{\partial n} = {0}\)

Gas outlet

\(\frac{{\partial (\rho v_{\text{i}} )}}{\partial n} = {0}\)

\(\frac{{\partial {{V}}}}{\partial n} = {0}\)

\(A = {0}\)

Ground wall

No-slip

0

\(\frac{{\partial A_\text{i} }}{\partial n} = {0}\)

  1. \(\overrightarrow {n}\): unit vector