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文章编号: 1672-6987(2020)04-0106-06; DOI: 10.16351/j.1672-6987.2020.04.016
胡海明, 徐方鑫
(青岛科技大学 机电工程学院,山东 青岛 266061)
摘要: 采用流场分析软件FLUENT,基于二次定型压力研究轮胎花纹边角的排气流场,分析质量流量、速度矢量、速度场、压力场和湍动能的变化规律。结果表明:型腔排气流场满足质量守恒方程;一定程度增大过渡角度和过渡圆角,能有效抑制回流现象,在过渡角度为60°和过渡圆角R=2 mm时,回流程度达到最低限度,湍动能最小为385×104 m2·s-2,峰值为372×105 m2·s-2;相对于过渡角度,过渡圆角的速度梯度变化程度低,气体流动相对稳定;型腔内的速度和压力的变化规律符合伯努利规律。
关键词: 流场; 边角; 回流现象; 旋涡
中图分类号: TQ 330.4+1文献标志码: A
引用格式: 胡海明, 徐方鑫. 轮胎花纹边角设计对排气流场的影响\[J\]. 青岛科技大学学报(自然科学版), 2020, 41(4): 106-111.
HU Haiming, XU Fangxin. Influence of tire tread corner design on exhaust flow field\[J\]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2020, 41(4): 106-111.
Influence of Tire Tread Corner Design on Exhaust Flow FieldHU Haiming, XU Fangxin
(College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061,China)
Abstract: The flow field analysis software FLUENT is used to study the exhaust flow field of the tire tread corner based on the secondary set pressure, and analyze the variation of mass flow, velocity vector, velocity field, pressure field and turbulent kinetic energy. The results show that cavity exhaust flow field satisfies the mass conservation equation,the transition angle and transition fillet can be increased to a certain extent, which can effectively suppress the reflow phenomenon. When the transition angle is 60° and the transition fillet R=2 mm, the reflow degree reaches the minimum, and the minimum turbulent energy is 3.85×104 m2·s-2, the peak value is 3.72×105 m2·s-2; compared with the transition angle, the velocity gradient of the transition fillet is less changed, the gas flow is more stable; The law of change of the velocity and pressure in the cavity is in accordance with Bernoulli′s law.
Key words: flow field; tread corner; reflux phenomenon; vortex
收稿日期: 2019-07-12
基金项目: 山东省自然科学基金项目(ZR2014EMM018).
作者简介: 胡海明(1964—),男,教授.