【摘要】 运用Stokes公式及边界元理论,导出了辐射换热计算中的辐射角系数与相互辐射面积的计算基本公式。分析了影响计算准确度有关因素,对所遇到的奇异积分给予了有效的处理。通过四个典型例子的计算,结果与精确解加以对比,表明本方法计算可靠、稳定,具有输入数据少、准确度高等优点。为辐射系数和空间热阻的求解开辟了新的途径。更多还原

【Abstract】 Based on the Stokes theorem and the boundary element theory, the basic equation of the radiation angle factors and the mutual radiation area for calculating radiation heat transfer was deduced. Four typical examples were analyzed numerically and the results were compared with the accurate solution. Results indicate that the present method is reliable and stable in calculation with additional advantages of less input data and higher accuracy. Factors affecting the accuracy of calculation were discussed and problem of integral singularity was solved effectively.更多还原