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首页> 外文期刊>Cogent Engineering >Picosecond laser surface micro-texturing for the modification of aerodynamic and dust distribution characteristics in a multi-cyclone system
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Picosecond laser surface micro-texturing for the modification of aerodynamic and dust distribution characteristics in a multi-cyclone system

机译：皮秒激光表面微织构化技术，用于改变多旋风系统中的空气动力学和尘埃分布特性

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Aerodynamic flow control in a cyclone is critical to its performance. Dust accumulation in a multi-cyclone is undesirable. This research investigated, the effects of laser-patterned Ethylene-Propylene-Diene Monomer (EPDM) roof in a commercial multi-cyclone system on its aerodynamic and dust accumulation characteristics. Our experimental data show that strategically designed concentric micro-dimples on the cyclone roof can improve both the aerodynamic performance and dust separation capability in the multi-cyclone system. With specific laser-patterned cyclone roof, up to 78% reduction in dust adhesion was demonstrated in one of the cones (cone 9). With the 315-μm diameter micro-dimples on EPDM roof, it was observed that dimples located close to the vortex finder caused an increase in the reverse airflows in the cyclone, thereby effecting entrainment of dust. The overall dust separation efficiency of the multi-cyclone system was at an average of 99.9% with the laser-textured roof, hence no adverse effect on the original cyclone system, in spite of the reported improvements in dust adhesion reduction.
机译：旋风分离器中的空气动力学流量控制对其性能至关重要。多旋风分离器中的灰尘积聚是不希望的。这项研究调查了激光图案化的乙烯-丙烯-二烯单体（EPDM）屋顶在商业多旋风系统中对其空气动力和灰尘堆积特性的影响。我们的实验数据表明，在旋风屋顶上策略性设计的同心微凹坑可以改善多旋风系统中的空气动力学性能和粉尘分离能力。使用特殊的激光图案旋风屋顶，在其中一个锥体（圆锥9）中，灰尘附着力降低了78％。在EPDM屋顶上使用直径为315μm的微型凹窝时，观察到靠近涡流探测器的凹窝会导致旋风分离器中的反向气流增加，从而带走灰尘。尽管已报告了降低粉尘附着力的改进，但采用激光纹理屋顶时，多旋风系统的总体粉尘分离效率平均为99.9％，因此，对原始旋风系统没有不利影响。

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