| 花纹参数对轮胎模具排气性能的影响 |
| Effect of Pattern Parameters on Exhaust Performance of Tire Mould |
| 投稿时间：2019-06-27 修订日期：2019-06-27 |
| DOI：10.12136/j.issn.1000-890X.2020.03.0219 |
| 中文关键词: 轮胎模具 花纹参数 排气性能 气孔 气体流域模型 流体动力学分析 |
| 英文关键词: tire mould pattern parameter exhaust performance air hole hole gas flow field model fluid dynamic analysis |
| 基金项目: |
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| 中文摘要: |
| ：通过三维建模软件UG建立轮胎模具的气体流域模型，采用流体动力学分析软件Fluent模拟气体流域模型在轮胎二次定型压力下流场的变化，分析气孔数量及花纹形状和尺寸对模具排气性能的影响，研究速度场、流阻因数、流量系数及湍动能的变化规律。结果表明：气体流域模型质量流量守恒；中央位置增加气孔后，型腔内气体的流动方向发生较大变化，气体排出明显加快，使流阻因数减小、流量系数增大；圆弧连接的花纹对临近气孔处的压缩气体流动起缓冲作用，减少回流现象；湍动能分布受气孔数量和花纹形状影响较小，气孔处湍动能波动幅度较大，易引起较多能量损失，影响模具排气性能。 |
| 英文摘要: |
| The gas flow field model of tire mould was established by UG 3D modelling software，the flow field change under the pressure of second-stage tire molding was simulated by Fluent fluid dynamic analysis software，the influence of the number of gas holes and the shape and size of the pattern on exhaust performance was analyzed，and the change rule of velocity field，flow resistance coefficient，flow coefficient and turbulent kinetic energy was studied.The results showed that the mass flow of the gas flow field model was conserved.The flow direction of the gas in the cavity changed greatly after the gas hole was added in the central position，and the gas discharge was obviously accelerated，which decreased the flow resistance coefficient and increased the flow coefficient.The pattern connection with arc shape played a buffer role for the compressed gas flow near the gas hole，and reduced the backflow.The distribution of the turbulent kinetic energy was less affected by the number of the gas holes and the shape of the pattern，and the turbulent kinetic energy at the gas holes fluctuated greatly，which caused more energy loss and affected the exhaust performance. |
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