Abstract

A transition from a conduction-driven to a convection-driven mode of coflow combustion in granulated Ti + 0.5C mixtures was experimentally detected at a pressure drop of around 1 atm. Burning velocity u was found to exhibit quadratic dependence on gas flow rate Q. The behavior of u upon variation in Q, ignition temperature, and combustion temperature was analyzed. The Q values corresponding to a transition from conduction-driven to convection-driven combustion were evaluated theoretically. Theoretical predictions for Ti + 0.5C mixture well agree with experiment.

中文翻译：

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Ti + x C颗粒混合物中的同流燃烧：对流驱动波传播的边界条件

摘要

在大约1个大气压的压降下，通过实验检测到颗粒状Ti + 0.5C混合物中从同流燃烧的传导驱动模式向对流驱动模式的过渡。发现燃烧速度u对气体流速Q表现出二次依赖性。分析了Q，点火温度和燃烧温度变化时u的行为。理论上评估了与从传导驱动燃烧到对流驱动燃烧的过渡相对应的Q值。Ti + 0.5C混合物的理论预测与实验吻合良好。