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Effects analysis on diesel soot continuous regeneration performance of a rotary microwave-assisted regeneration diesel particulate filter

机译：旋转微波辅助再生柴油机微粒滤池对柴油机烟灰连续再生性能的影响分析

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摘要

In order to investigate effects of various factors on continuous regeneration performance of a rotary microwave-assisted regeneration diesel particulate filter (MRDPF), a regeneration mathematical model and a field synergy model of the rotary MRDPF are developed, and turbulent kinetic energy distribution and pressure distribution of the rotary MRDPF based on three different turbulence models are analyzed. The results indicate that the RNG k-epsilon model is more suitable for simulation of the rotary MRDPF and appropriate increment of filter unit number, oxygen content and exhaust gas temperature can result in the regeneration performance improvement of the rotary MRDPF. Inlet flow velocity of exhaust gas can change synergy degree between the velocity field and the temperature field and high synergy area is mainly concentrated in the upper and central parts of the filter unit. Moreover, field synergy degree and regeneration efficiency of the filter unit are both better when the flow velocity reaches 0.3 m/s during regeneration phase, where regeneration optimized area ratio and maximum regeneration efficiency are 0.51 and 91%, respectively. This work provides great reference values for optimizing the continuous regeneration performance of the rotary MRDPF.
机译：为了研究各种因素对旋转微波辅助再生柴油机颗粒过滤器（MRDPF）连续再生性能的影响，建立了旋转MRDFF的再生数学模型和场协同模型，并建立了湍动能分布和压力分布分析了基于三种不同湍流模型的旋转MRDPF。结果表明，RNGk-ε模型更适合于旋转MRDPF的模拟，适当增加过滤器单元数，氧气含量和废气温度可以提高旋转MRDPF的再生性能。废气的入口流速可以改变速度场与温度场之间的协同程度，高协同区域主要集中在过滤器单元的上部和中央。此外，当再生阶段的流速达到0.3 m / s时，过滤器单元的场协同度和再生效率均更好，再生优化面积比和最大再生效率分别为0.51和91％。这项工作为优化旋转MRDPF的连续再生性能提供了很好的参考价值。

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