摘要
利用最新光谱数据库提出了基于数据库的普朗克平均吸收系数计算方法和逐线法,并针对一维平行平板间等温辐射传热问题探讨了逐线法(line-by-line,LBL)、统计窄谱带模型(statistical narrow-band model,SNB)和统计窄谱带关联K模型(statistical narrow-band correlated-K model,SNBCK)计算原理、计算精度和三模型间的偏离变化。结果表明,三种模型的结果吻合较好,几个数据库都比较准确。对于逐线法,表明可采用HITRAN2012(high resolution TRANsmission spectroscopic database)光谱数据库替代HITEMP2010(high-TEMPerature spectroscopic absorption parameters spectroscopic database)数据库来提高计算效率。
Based on the updated spectroscopic database,the Planck mean absorption coefficients of CO2 and H2O in the temperature range of 300 to 2 500 K and the line-by-line（LBL）method were proposed.Thermal radiation transfer in one-dimensional enclosure between two parallel plates filled with real gases,namely CO2,H2O,or their mixtures,was calculated using the LBL approach,the statistical narrow-band（SNB）model and the statistical narrow-band correlated-K（SNBCK）model with their spectroscopic databases.The LBL results were compared with the classical results and those from the statistical narrow-band model.For isothermal and homogeneous media,three databases are very accurate.This work indicates that the HITRAN2012 spectroscopic database（High Resolution TRANsmission spectroscopic database）can replace the HITEMP 2010 database（High TEMPerature spectroscopic absorption parameters spectroscopic database）to improve computational efficiency.
出处
《热科学与技术》
CAS
CSCD
北大核心
2014年第3期213-220,共8页
Journal of Thermal Science and Technology
基金
国家自然科学基金资助项目(51306001
51376008)
国家重大科学仪器设备开发专项资助项目(2012YQ220119)
安徽省自然科学基金资助项目(1408085QE100)
安徽工业大学青年教师科研基金资助项目(QZ201302)
关键词
光谱数据库
普朗克平均吸收系数
逐线法
统计窄谱带模型
统计窄谱带关联K模型
spectroscopic database
Planck mean absorption coefficients
line-by-line
statistical narrow-band model
statistical narrow-band correlated-K model
