It is shown the diffusion approximation for the EBC boundary condition has the better precision and the calculation is simpler than the other two methods.

• 用MonteCarlo模拟结果检验了能流率分布漫射近似的精度 ,结果表明 :漫射近似采用EBC边界条件的结果有较高的精度和计算较简单等优点 ,为能流率分布的快速准确计算提供了依据