燃烧过程辐射换热离散坐标模型的应用

李志强

燃烧过程辐射换热离散坐标模型的应用

李志强

北京航空航天大学能源与动力工程学院航空发动机气动热力重点实验室, 北京 100083

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出版历程
- 收稿日期: 2005-04-28
- 修回日期: 2005-09-28
- 刊出日期: 2006-04-28

Application of Discrete-Ordinates Model to the Study of Radiative Heat Transfer

LI Zhi-qiang

National Key Laboratory of Aircraft Engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 对离散坐标(DO)辐射传热模型分别在长方体空间和旋流燃烧室内进行了验证与应用。长方体空间的计算结果表明:DO模型的纯辐射传热预报结果比六热流(SHF)模型准确,与计算精确的区域法的计算结果吻合较好,而SHF模型的预报结果却有较大的误差。对于旋流燃烧室内温度场的模拟预报也表明,DO模型的计算结果和实验值相吻合,明显高于用SHF模型计算所得的温度值。另外,DO模型在计算时间和边界处理等方面比区域法优越;在收敛速度和计算准确度等方面也比工程常用的六通量模型优越。
- 航空、航天推进系统 /
- 湍流燃烧 /
- 数值模拟 /
- 辐射换热 /
- 离散坐标模型
Abstract: The radiative heat transfer model,i.e.Discrete-Ordinates(DO) model,was verified by and applied to a combustion chamber and a three dimensional(3D) swirl combustor.For the combustion chamber,the predicted results of pure radiative heat transfer were in good agreement with those of the zone method,while the SHF model gave relatively large deviations.For swirl combustor,the predicted temperature distribution of DO model were in good agreement with those measured by experiment and were better than those of the SHF model.Also,the computation time and boundary treatment,the DO model was better than zone model and six heat flux model.
- aerospace propulsion system /
- turbulent combustion /
- numerical simulation /
- radiative heat transfer /
- discrete-ordinates model

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参考文献(12)

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