| 基于有限体积法和SNBCK模型的红外辐射特性计算 |
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| 引用本文： | 胡海洋,王强. 基于有限体积法和SNBCK模型的红外辐射特性计算[J]. 北京航空航天大学学报, 2009, 35(9): 1121-1124 |
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| 作者姓名： | 胡海洋 王强 |
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| 作者单位： | 北京航空航天大学,能源与动力工程学院,北京,100191;北京航空航天大学,能源与动力工程学院,北京,100191 |
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| 摘 要： | 耦合求解流场、组分浓度场、基于SNBCK模型的气体辐射传输/能量方程以求准确模拟飞行器排气系统气动热力及红外特性.窄带模型参数由HITEMP逐线计算数据库计算得到.通过CO24.3μm波段吸收率计算,圆柱炉膛辐射换热特性计算两个算例验证了所采用程序求解辐射传输/能量方程的准确性.最后计算了两种二元喷管的红外特性,结果表明大宽高比二元喷管地面和空中状态红外辐射特性差异巨大.
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| 关 键 词： | 排气系统 红外辐射 统计窄带模型 关联k模型 |
| 收稿时间： | 2008-09-01 |
Calculation of aircraft exhaust system infrared characteristics based on SNBCK model and finite volume method |
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| Hu Haiyang,Wang Qiang. Calculation of aircraft exhaust system infrared characteristics based on SNBCK model and finite volume method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(9): 1121-1124 |
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| Authors: | Hu Haiyang Wang Qiang |
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| Affiliation: | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | The coupled calculations for flow fluid field, species concentration field and gas radiation transfer /energy equations based on SNBCK model were employed to simulate accurately the aerothermodynamic and infrared characteristics of the aircraft exhaust system. The parameters of narrow-band model were evaluated by HITEMP line-by-line database. Two calculating cases, the computation of carbon dioxide absorptivity at 4.3 micron band and the radiation heat transfer evaluation of the cylindrical furnace, respectively proved the accuracy of using this method to calculate radiation transfer/energy equations. Finally, the infrared characteristics of two two-dimensional nozzles were calculated, and the results show the great differences of infrared characteristic for high width-height ratio 2-dimentional nozzle between ground and high altitude state. |
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| Keywords: | exhaust systems infrared radiation statistical narrow-band model correlated-k model |
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