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| 混合分组矩量投影法应用于详细碳烟模型求解 |
| 张恒韶,薛强坤,孙翔,吴少华 |
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| 大连理工大学能源与动力学院,大连 116081;大连理工大学能源与动力学院,大连 116081;亿方能(深圳)科技有限公司,深圳 518000;剑科云智(深圳)科技有限公司,深圳 518128 |
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| 摘要:提出一种新型的可有效求解碳烟颗粒群体平衡模型的数值算法：混合分组矩量投影法。该方法结合传统分组法及矩方法的技术，通过在每个分组区间内引入权重粒子来拟合原始的颗粒群尺寸分布函数，解决群体平衡模型中方程的封闭性问题。该方法具有结构简单、计算量小、精确度高等优点。分别在层流预混火焰及柴油机模拟中进行试验验证，结果表明，该算法可高效地应用于不同燃烧条件下碳烟颗粒群体平衡模型的求解，模拟结果能较好复现测量结果，并为深入研究不同的碳烟反应机制提供便利。 |
| 关键词: 混合分组矩量投影法 碳烟 柴油机 燃烧 |
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| Application of Hybrid Sectional Moment Projection Method to Solving of Detailed Soot Models |
| ZHANG Hengshao,XUE Qiangkun,SUN Xiang,WU Shaohua |
| School of Energy and Power Engineering, Dalian University of Technology, Dalian 116081, China;School of Energy and Power Engineering, Dalian University of Technology, Dalian 116081, China;E2N Technology Limited, Shenzhen 518000, China;CTC Intelligence Limited, Shenzhen 518128, China |
| Abstract:A new solution algorithm for solving the soot population balance model，namely hybrid sectional moment projection method is introduced.This method combines the technique of traditional sectional method and method of moments，and is applied to solve the closure problem of formula in the soot population balance model through introducing weighted particles in each section to fit the original particle size distribution function.This method has advantages of being simple，low computational cost and high accuracy.Experimental validation in laminar premixed flame and diesel engine simulation was carried out.The results suggest that this method can be effectively adopted for the solution of soot population balance model under various combustion conditions.The simulation results can better replicate the result of measurement results and provide convenience for in-depth study of various soot reaction mechanisms. |
| Key words: hybrid sectional moment projection method soot diesel engine combustion |