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| 钝体燃烧器湍流预混燃烧流动特性的模拟 |
| Flow field simulation of premixed turbulent flame stabilized by a bluff body burner |
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| DOI： |
| 中文关键词: 钝体 湍流预混燃烧 湍流火焰封闭模型 粒子图像测速技术 |
| 英文关键词:bluff body turbulent premixed combustion TFC model PIV |
| 基金项目: |
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| 摘要点击次数: 3157 |
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| 中文摘要: |
| 钝体燃烧器的回流区结构对燃烧具有重要影响，采用经济有效的数学模型对回流区结构进行模拟具有理论价值和实际意义。采用PIV技术测量了一个典型的钝体燃烧器的热态流场，并基于Fluent平台使用3种湍流燃烧速度定义对TFC模型进行求解，分析比较了Zimont、Gulder、Peters和实验得到的流场特性。结果发现Peters的流动特性与实验结果最为接近，都属于射流主导型结构，Peters的进展变量与Zimont和Gulder有明显不同。 |
| 英文摘要: |
| The recirculation zone of a bluff body burner is crucial for combustion stability. It has theoretical value and practical meaning to predict the recirculation-zone structure using economic and effective mathematical models. In this paper, the reacting flow field of a typical bluff body burner was measured by the Particle Image Velocimetry (PIV). Numerical simulations using the TFC model were conducted based on three different turbulent burning-velocity definitions, in order to make comparisons with experimental results. Results showed that the predicted flow characteristics based on Peters definition are found to have the best agreement with experimental data, and the progress variable by Peters is obviously different from those by the other two. |
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