应用非光滑平板的小型客车模型气动阻力系数的实验优化

Cihan Bayindirli, M. Çelik
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引用次数: 1

摘要

本文研究了非光滑板在微型车模型风洞流动控制中的应用。在SolidWorks®Cad程序中设计1/15比例的小巴模型和非光滑面板,并在3d打印机中进行打印。重点研究了通过减少流动分离来降低非光滑板飞行器的阻力系数。在13.90 ~ 27.40 m/s和2.62x105 ~ 5.18x105雷诺数范围内进行了4种自由流速度的实验测试。在风洞试验中,采用雷诺数无关来保证动力相似性。堵塞率为10.68%。结果表明,在小巴车型前车顶面积上使用非光滑表面板可使阻力系数平均降低1.03%。在高速行驶时,这种降低率可使车辆的燃油消耗量降低约0.5%。
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EXPERIMENTAL OPTIMIZATION OF AERODYNAMIC DRAG COEFFICIENT OF A MINIBUS MODEL WITH NON-SMOOTH SURFACE PLATE APPLICATION
In this study non-smooth surface plate application was experimentally investigated to flow control around a scaled minibus model in a wind tunnel. 1/15 scaled minibus model and non-smooth surface plate were designed in SolidWorks® Cad program and produced in 3-D printer. It was focused on decrease of drag coefficient of vehicle with non-smooth surface plate by reducing flow separation. The experimental tests carried out 4 free stream velocities between the speed of 13.90-27.40 m/s and 2.62x105-5.18x105 Reynolds numbers. In wind tunnel tests Reynolds number independence was used to ensure dynamic similarity. The blockage rate was 10.68 %. It was determined that the using of non-smooth surface plate e on the front roof area of minibus model decreased to drag coefficient by an average of 1.03%. This reduction rate can decrease fuel consumption of vehicle about 0.5% at high speeds.
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审稿时长
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