红外与毫米波学报, 2014, 33 (4): 436, 网络出版: 2014-09-01
多分散细水雾遮蔽热辐射的高效计算方法
Calculation of radiative heat shielding with polydisperse water sprays
多分散细水雾 热遮蔽 辐射特性参数 谱带灰体模型 数据库 fine water sprays radiative heat shielding radiative properties spectral bands-grey assumption model database
摘要
建立了多分散细水雾0.8～20μm辐射特性参数数据库和谱带灰体模型，并提出了采用数据库调用获取辐射特性参数、采用谱带灰体模型处理细水雾非灰特性相结合的方法.通过将该方法计算的无量纲辐射热流与采用Mie理论和窄谱带模型计算的结果作对比，证明该方法准确可靠.通过精度分析和效率分析，证明所提方法既可保证精度在可接受的水平，又能使计算时间大幅缩减.
Abstract
A database of radiative properties of sprays covering the wavelength range of 0.8～20μm and droplets radius range of 1～300μm was constructed. A method of combining database calls for radiative properties acquisition and spectral bands-grey assumption model for processing the non-grey characteristics of sprays was proposed. The result for dimensionless radiative heat flux calculated with the method was compared with the results obtained by this method and got by Mie theory and spectral bands model with Monte Carlo method.It was found that the method of database calls combined with spectral bands-grey assumption model can not only guarantee the calculation accuracy at an acceptable level, but also reduce the CPU time significantly.
杜永成, 杨立, 谢志辉, 孙丰瑞. 多分散细水雾遮蔽热辐射的高效计算方法[J]. 红外与毫米波学报, 2014, 33(4): 436. DU Yong-Cheng, YANG Li, XIE Zhi-Hui, SUN Feng-Rui. Calculation of radiative heat shielding with polydisperse water sprays[J]. Journal of Infrared and Millimeter Waves, 2014, 33(4): 436.
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