舰船海水管系中紫铜/钢制管道耦接后电偶腐蚀的数值模拟研究

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Numerical Simulation of Galvanic Corrosion of TP2Y Copper Pipes Coupled with Steel Pipes in a Seawater Pipe Systems of Ships

WANG Bingqin, ZHANG Xiaolian, YONG Xingyue, ZHOU Huan, GAO Xinhua

表1 公式 (1) 中广义扩散系数Γ和原项S的值^[15]

Table 1 Values of Γ and S in Eq. (1)^[15]

φ	Γ	S
u	$μ_{e f f}$	$- \frac{\partial p}{\partial x} + \frac{\partial}{\partial x} (μ_{e f f} \frac{\partial u}{\partial x}) + \frac{\partial}{\partial y} (μ_{e f f} \frac{\partial u}{\partial x})$
v	$μ_{e f f}$	$- \frac{\partial p}{\partial y} + \frac{\partial}{\partial x} (μ_{e f f} \frac{\partial u}{\partial y}) + \frac{\partial}{\partial y} (μ_{e f f} \frac{\partial v}{\partial y})$
K	$μ + \frac{μ_{t}}{σ_{k}}$	$G - ρ ε$
ε	$μ + \frac{μ_{t}}{σ_{ε}}$	$\frac{ε}{K} (C_{1} G - C_{2} ρ ε)$
$μ_{e f f} = μ + μ_{t}$ $μ_{t} = ρ C_{μ} \frac{K^{2}}{ε}$ $G = μ_{t} \{2 [{(\frac{\partial u}{\partial x})}^{2} + {(\frac{\partial v}{\partial y})}^{2}] + {(\frac{\partial u}{\partial y} + \frac{\partial v}{\partial x})}^{2}\}$ $C_{μ} = 0.09, C_{1} = 1.44, C_{2} = 1.92, σ_{k} = 1.0, σ_{ε} = 1.3$