不规则表面间的视角系数计算比较复杂,研究者模拟工件在热处理炉内辐射换热时一般将其简化为1.为了分析有无视角系数对工件内部温度场计算的影响,实测了4个圆柱形工件在燃气炉内加热过程的温度分布,并利用ProCAST软件模拟了有无视角系数计算的工件内部温度场.结果表明,计算视角系数得到的温度模拟值与实测值吻合;计算视角系数时,两相邻工件的相互靠近一侧温度偏低,比无视角系数计算的温度低达130℃;沿工件中轴线对称位置的上下表面温差最大约50℃.
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