双钨极TIG电弧-熔池传热与流动数值模拟<sup>*</sup>

双钨极TIG电弧-熔池传热与流动数值模拟^*

王新鑫, 樊丁, 黄健康, 黄勇

NUMERICAL SIMULATION OF HEAT TRANSFER AND FLUID FLOW IN DOUBLE ELECTRODES TIG ARC-WELD POOL

WANG Xinxin, FAN Ding, HUANG Jiankang, HUANG Yong

表1 边界条件

Table 1 Boundary conditions

Area	v / (m·s^-¹)	T / K	?? $\begin{matrix} Φ \end{matrix}$ / V	A / (Wb·m^-¹)
A	$\begin{matrix} v_{z} = v (x, y) \end{matrix}$	T=T(x, y)	$\begin{matrix} \frac{? Φ}{? n} = 0 \end{matrix}$	$\begin{matrix} \frac{? A}{? n} = 0 \end{matrix}$
B	$\begin{matrix} \frac{? (ρ v)}{? n} = 0 \end{matrix}$	$\begin{matrix} \frac{? T}{? n} = 0 \end{matrix}$	$\begin{matrix} \frac{? Φ}{? n} = 0 \end{matrix}$	A=0
C	-	Eq.(18)	$\begin{matrix} \frac{? Φ}{? n} = 0 \end{matrix}$	A=0
D	-	Eq.(18)	0	$\begin{matrix} \frac{? A}{? n} = 0 \end{matrix}$
E	-	1800	$\begin{matrix} - σ_{e} \frac{? Φ}{? z} = \frac{I}{π r_{c}^{2}} \end{matrix}$	$\begin{matrix} \frac{? A}{? n} = 0 \end{matrix}$