【摘要】 利用有限容积法采用C语言模拟了三维圆柱体内吸收、散射性介质的辐射传热温度场;通过辐射传递过程的数值计算,分析了介质本身性质、各向异性散射对温度分布的影响。与光线踪迹法相比较,有限容积法计算速度快具有较好的精度,是目前辐射传递过程数值模拟的一种较好的方法。计算结果表明,由于径向辐射射程比轴向辐射射程小,所以各向异性散射在径向对温度场的影响要比在轴向的大;此外反照率对温度场的影响不大。更多还原

【Abstract】 Radiative heat transfer temperature field is numerically simulated in an absorbing & scattering media in three-dimensional cylinder,by using the finite-volume method(FVM)based on C language in the paper;According to calculating radiative heat transfer,the influence of media attributes,anisotropic scattering & radiation character on temperature distribution is analyzed.Compared with the ray tracing method(RTM),computing speed of FVM is faster and its precision is higher.At the present time,the FVM is a preferable method to calculate radiative transfer process.The result shows that the influence of anisotropic scattering on temperature field at radial direction is greater than that at axial direction because radiative heat range at radial direction is shorter than that at axial direction;scattering coefficient have a little influence on temperature field.更多还原