摘要
从几何角度对蛛网抵抗飓风的原因进行探究,基于最常见的蜘蛛网的形状,建立了同心圆蛛网模型,并设计正方形网状模型与其进行对比.采用数值模拟的方式,计算不同风速下两种几何模型的迎风阻力,通过对比,发现了同心圆蛛网模型受到阻力较小的特点.并以SDF型隧道轴流通风机为例,对使用蛛网型防虫网所节约的电机功率和电能进行计算.结果表明,蛛网几何模型可以节约能源,适合用于防虫网设计.
From a geometric approach,the reason for spider’s web withstanding hurricane is studied.Based on themost common spider’s web geometry,a spider’s concentric web model is designed and a square reticular modelis designed for comparison.The frontal drags at different speeds of the models are calculated by using numericalsimulation method.Through comparisons,the results confirm that the drag of a spider’s concentric web model issmaller.In addition,the model is applied to the protecting mesh of SDF tunnel axial flow fan.The motor powerand electric energy saved by the protecting mesh are calculated.It is found that a spider’s concentric web model cansave energy,and it is suitable for the protecting mesh design.
作者
徐伟
李海涛
张旭妍
吴雪峰
陈维建
XU Wei;LI Haitao;ZHANG Xuyan;WU Xuefeng;CHEN Weijian(College of Aerospace Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China)
出处
《河南科学》
2017年第3期374-381,共8页
Henan Science
基金
江苏省自然科学基金(BK20140829)
中央高校基本科研业务费专项资金(NS2016005)
南京航空航天大学研究生创新基金(实验室)开放基金(kfjj20150110)
关键词
蜘蛛网
数值模拟
迎风阻力
轴流风机
spider’s web
numerical simulation
frontal drag
axial flow fan
